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Weather Averages for New Castle, DE

7-day Forecast / 10-day Forecast
Tuesday
High: 49°F
Low: 31°F
Sunny
 
Wednesday
High: 49°F
Low: 35°F
Partly Cloudy
 
Thursday
High: 46°F
Low: 34°F
Patchy light drizzle
 
Friday
High: 47°F
Low: 31°F
Sunny
 
Saturday
High: 48°F
Low: 32°F
Sunny
 

Latitude: 39°40'N, Longitude: 75°36'W, Elevation: 79.0 ft, Distance: 1.29 mi                 New Castle, DE Averages »

  Unit Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average temperature
over 51 years		 °F 53 32 33 41 51 62 71 75 73 66 55 44 35
Average high temperature
over 51 years		 °F 62 39 41 50 62 71 80 86 82 77 66 53 42
Average low temperature
over 51 years		 °F 42 24 26 32 41 51 60 66 64 57 44 35 28
Highest recorded temperature
over 48 years		 °F 102 75 78 86 93 95 100 102 100 100 91 84 73
Lowest recorded temperature
over 48 years		 °F -14 -14 -5 1 17 30 41 48 43 36 24 14 -7
Average number of rainy days
over 46 years		 days 116 11 9 11 11 11 10 9 9 8 8 9 10
Average number of days above 90°F
over 48 years		 days 20 - - - - 1 4 8 5 2 - - -
Average precipitation
over 51 years		 in 41.1 3.1 2.9 3.8 3.3 3.7 3.4 4.1 3.8 3.6 2.8 3.3 3.4
Average dew point
over 48 years		 °F 43 21 23 28 39 50 60 64 64 57 46 36 26
Average number of days above 70°F
over 48 years		 days 160 - - 2 8 20 28 31 31 25 12 2 -
Most recorded rainfall
over 48 years		 in 54.7 8.4 7.0 7.5 6.8 7.4 7.5 12.6 12.1 9.5 8.0 7.8 7.9
Least recorded rainfall
over 48 years		 in 24.9 0.5 0.8 0.8 0.3 0.2 0.2 0.2 0.3 0.8 0.2 0.5 0.2
Average number of days with thunderstorms
over 48 years		 days 29 - - 1 2 4 6 6 6 2 1 1 -
Average number of days with fog
over 48 years		 days 168 12 11 13 12 15 15 16 17 16 15 13 13
Average morning relative humidity
over 48 years		 % 78 75 74 74 73 76 78 80 83 85 84 80 76
Average evening relative humidity
over 48 years		 % 55 60 56 52 50 53 54 55 57 56 55 58 61
Average wind speed
over 48 years		 mph 10.0 12.0 12.0 13.0 11.0 10.0 9.0 9.0 9.0 8.0 9.0 11.0 11.0
Average number of days below 32°F
over 48 years		 days 99 25 22 15 3 - - - - - 2 10 22
Average snowfall
over 46 years		 in 20.4 6.6 6.0 3.3 0.2 - - - - - 0.1 0.9 3.3
Average number of clear days
over 46 years		 days 97 7 7 8 7 7 8 8 9 10 11 8 8
Heating degree days
over 30 years		 days 4937 1066 885 691 384 122 - - - 35 288 561 905
Cooling degree days
over 30 years		 days 1046 - - - - 44 199 353 310 125 15 - -
Average number of cloudy days
over 46 years		 days 164 17 14 15 15 14 11 12 12 12 12 14 16
Average number of partly cloudy days
over 46 years		 days 104 7 7 8 8 10 11 11 10 8 8 8 7
Average number of days below 10°F
over 48 years		 days 6 3 2 - - - - - - - - - 1

Check weather averages for nearby locations (some locations might offer more data):
Latitude: 39°40'N, Longitude: 75°43'W, Elevation: 89.0 ft, Distance: 6.12 mi
Latitude: 39°40'N, Longitude: 75°44'W, Elevation: 90.0 ft, Distance: 6.99 mi
Latitude: 39°46'N, Longitude: 75°32'W, Elevation: 274.0 ft, Distance: 9.00 mi
Latitude: 39°46'N, Longitude: 75°31'W, Elevation: 269.0 ft, Distance: 9.41 mi
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