View. Shortwave radiation includes visible light and ultraviolet radiation. Click on each chart for more information. This means that real estate in the New Castle, DE area is generally more affordable than the rest of Delaware. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. The least muggy day of the year is February 11, when muggy conditions are essentially unheard of. Mean annual temperatures across the State range from 54.0 ° F in northern New Castle County to 58.1 ° F along the Atlantic coast of southern Delaware. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. We assume no responsibility for any decisions made on the basis of the content presented on this site. New Castle Monthly Weather Forecast 5 days , 7 days , 10 day , 14 days , 15 days , 16 days , 25 days , 30 days , 45 days , 60 days , 90 days Date The average hourly temperature, color coded into bands. New Castle is located near a large body of water (e.g., ocean, sea, or large lake). Country: Delaware, USA, City: New Castle. There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in New Castle. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end. Kelvin Ramsey, a geologist with the Delaware Geological Survey was quoted in News Journal article about rainfall. At New Castle Airport, the summers are warm and humid, the winters are very cold, and it is wet and partly cloudy year round. New Castle, Delaware, USA - Current weather, an hourly forecast for today, tomorrow, detailed 10-day weather forecast and long range monthly outlook. For the purposes of this report, the geographical coordinates of New Castle Airport are 39.678 deg latitude, -75.606 deg longitude, and 69 ft elevation. The climate of Delaware is "humid temperate" with hot summers and mild winters. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Tbilisi, Georgia (5,694 miles away) is the far-away foreign place with temperatures most similar to New Castle (view comparison). Daylight saving time (DST) is observed at New Castle Airport during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7. New Castle Airport experiences some seasonal variation in monthly rainfall. The figure below shows you a compact characterization of the entire year of hourly average temperatures. Daylight saving time (DST) is observed in New Castle during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7. Annual Weather Averages Near Wilmington. The day of the year with the coolest water is February 15, with an average temperature of 39°F. The snowless period of the year lasts for 7.9 months, from March 26 to November 23. The number of hours during which the Sun is visible (black line). Based on growing degree days alone, the first spring blooms at New Castle Airport should appear around April 2, only rarely appearing before March 18 or after April 15. The muggiest day of the year is July 29, with muggy conditions 63% of the time. In 2021, the shortest day is December 21, with 9 hours, 22 minutes of daylight; the longest day is June 20, with 14 hours, 59 minutes of daylight. Year Selection Submit. The solar day over the course of the year 2021. The calmest day of the year is August 13, with an average hourly wind speed of 5.8 miles per hour. The cold season lasts for 3.1 months, from December 3 to March 7, with an average daily high temperature below 49°F. The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Wilmington, DE . Min. The average hourly wind speed at New Castle Airport experiences significant seasonal variation over the course of the year. We assume no responsibility for any decisions made on the basis of the content presented on this site. To characterize how pleasant the weather is at New Castle Airport throughout the year, we compute two travel scores. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The earliest sunset is at 4:37 PM on December 6, and the latest sunset is 3 hours, 56 minutes later at 8:34 PM on June 27. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. The average hourly temperature, color coded into bands. The day of the year with the warmest water is August 6, with an average temperature of 75°F. Calendar Year Picker. The most snow falls during the 31 days centered around January 27, with an average total liquid-equivalent accumulation of 0.6 inches. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. As of 6:44 pm EST. The figure below shows you a compact characterization of the entire year of hourly average temperatures. Based on the tourism score, the best times of year to visit New Castle for warm-weather activities are from early June to early July and from early August to late September. The wind is most often from the south for 3.6 weeks, from June 1 to June 26 and for 2.5 months, from July 23 to October 6, with a peak percentage of 36% on August 2. The number of hours during which the Sun is visible (black line). support@__remove_this_part__weatherspark.com. This report illustrates the typical weather at New Castle Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . 2021 Long Range Weather Forecast for New Castle, DE . The windier part of the year lasts for 6.5 months, from October 25 to May 8, with average wind speeds of more than 7.7 miles per hour. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . New Castle, DE Weather History ... Day Selection. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 38% on July 15. The darkest day of the year is December 23, with an average of 1.9 kWh. Within 10 miles is essentially flat (440 feet). support@__remove_this_part__weatherspark.com. 50° 34° 29. The area within 2 miles of New Castle Airport is covered by artificial surfaces (92%), within 10 miles by artificial surfaces (51%) and trees (21%), and within 50 miles by cropland (35%) and trees (29%). The thin dotted line is the corresponding average rainfall. Girard College Hosts 26th Annual ... Delaware Weather ... A coastal flood advisory remains in effect until 3 p.m. for Salem and Cumberland Counties in New Jersey and New Castle County in Delaware. The crash occurred … MERRA-2 Modern-Era Retrospective Analysis. The wind is most often from the west for 2.0 days, from May 21 to May 23; for 2.7 weeks, from July 2 to July 21; and for 7.4 months, from October 6 to May 17, with a peak percentage of 36% on July 6. The snowless period of the year lasts for 7.9 months, from March 26 to November 24. Within 10 miles is essentially flat (407 feet). More about our weather records Wilmington Weather History for the Previous 24 Hours Show weather for: Previous 24 hours January 20, 2021 January 19, 2021 January 18, 2021 January 17, 2021 January 16, 2021 January 15, 2021 January 14, 2021 January 13, 2021 January 12, 2021 January 11, 2021 January 10, 2021 January 9, 2021 January 8, 2021 January 7, 2021 January 6, 2021 January 5, 2021 The average water temperature experiences significant seasonal variation over the course of the year. To characterize how pleasant the weather is in New Castle throughout the year, we compute two travel scores. The predominant average hourly wind direction in New Castle varies throughout the year. The estimated value at New Castle is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between New Castle and a given station. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter. The percentage of time spent in various temperature bands. Based on this score, the best times of year to visit New Castle Airport for general outdoor tourist activities are from early June to early July and from early August to late September, with a peak score in the first week of September. 10° 1° 29. Shortwave radiation includes visible light and ultraviolet radiation. In New Castle, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year. Winter temperatures will be above normal, on average, with the coldest periods in mid-December and early and mid-January. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. Weather Sky Cond. Station Data. MERRA-2 Modern-Era Retrospective Analysis. The winter climate is intermediate between the cold of the Northeast and the mild weather of the South. Wilmington, New Castle County Airport: Enter Your "City, ST" or zip code : metric: D a t e Time (est) Wind (mph) Vis. The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. July is the wettest month in New Castle County with 4.7 inches of rain, and the driest month is February with 2.8 inches. The most snow falls during the 31 days centered around January 27, with an average total liquid-equivalent accumulation of 0.6 inches. New Castle County has seen 33,852 ... a total of 4,709 more than the 35- to 49-year-old age group at 13,229. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Monthly Weather-New Castle, DE, United States. Feb. Sun Mon Tue Wed thu Fri Sat. The transitions to and from daylight saving time are indicated by the 'DST' labels. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This section reports on the wide-area average surface temperature of that water. The most rain falls during the 31 days centered around September 27, with an average total accumulation of 3.7 inches. The darkest day of the year is December 23, with an average of 1.9 kWh. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. NEW CASTLE, Del. The mean annual temperature ranges from 55 F in New Castle County to 56 F over Kent and Sussex counties. To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. 40° 25° 30. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. The windier part of the year lasts for 6.5 months, from October 24 to May 9, with average wind speeds of more than 7.9 miles per hour. - Delaware State Police are investigating a multi-vehicle crash that left two people dead Wednesday night. Rain falls throughout the year at New Castle Airport. The Daily Climate Report (CLI), Preliminary Monthly Climate Data (CF6), Record Event Report (RER), Monthly Weather Summary (CLM), Regional Summary (RTP), Seasonal Climate Report (CLS), and Annual Climate Report (CLA) can be found on the Past Observed Weather page. The calmer time of year lasts for 5.5 months, from May 9 to October 24. The figure below presents a compact representation of key lunar data for 2021. The area within 2 miles of New Castle is covered by artificial surfaces (58%) and water (41%), within 10 miles by artificial surfaces (47%) and cropland (20%), and within 50 miles by cropland (34%) and trees (30%). A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. Time zones for airports and weather stations are provided by AskGeo.com . In New Castle, the summers are warm and humid, the winters are very cold, and it is wet and partly cloudy year round. The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. The earliest sunrise is at 5:33 AM on June 13, and the latest sunrise is 2 hours, 3 minutes later at 7:36 AM on November 6. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Temperature (ºF) Relative Humidity Wind Chill (°F) Heat Index (°F) Pressure Precipitation (in.) New Castle experiences some seasonal variation in monthly rainfall. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. The calmer time of year lasts for 5.5 months, from May 8 to October 25. 4° 0° 28. The clearer part of the year in New Castle begins around June 26 and lasts for 4.6 months, ending around November 14. The black line is the percentage chance that a given day is within the growing season. According … The figure below presents a compact representation of key lunar data for 2021. Dec. Calendar Month Picker. The muggier period of the year lasts for 4.0 months, from May 26 to September 27, during which time the comfort level is muggy, oppressive, or miserable at least 16% of the time. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. The cloudier part of the year begins around November 14 and lasts for 7.4 months, ending around June 26. The growing season in New Castle typically lasts for 7.1 months (217 days), from around April 3 to around November 5, rarely starting before March 18 or after April 19, and rarely ending before October 20 or after November 22. Lower dew points feel drier and higher dew points feel more humid. The muggiest day of the year is July 29, with muggy conditions 62% of the time. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The average hourly wind speed in New Castle experiences significant seasonal variation over the course of the year. Dec. Calendar Month Picker. The shaded overlays indicate night and civil twilight. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. Clear skies Windy 35 °F ILG Terminal Area Forecast. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. Rain falls throughout the year in New Castle. Annual Weather Summary November 2020 to October 2021. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. 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