Climateby Month

Wilmington vs Dover weather

Wilmington, DE and Dover, DE · 41 mi apart

July highs: 87°F in Wilmington, 87°F in Dover. January highs: 41°F and 44°F (Dover is 3°F warmer). Wilmington has about 122 wet days a year, Dover about 110. Muggy days: about 52 a year in Wilmington, about 74 in Dover. Snow: 20.2 in a year in Wilmington, 13.2 in in Dover.

Wilmington, DE

20°40°60°80°100° January: normal high 41°F (5°C), low 26°F (-3°C) 41° 26° February: normal high 44°F (7°C), low 27°F (-3°C) March: normal high 53°F (12°C), low 34°F (1°C) April: normal high 64°F (18°C), low 44°F (7°C) May: normal high 74°F (23°C), low 53°F (12°C) June: normal high 82°F (28°C), low 63°F (17°C) July: normal high 87°F (31°C), low 68°F (20°C) 87° 68° August: normal high 85°F (29°C), low 67°F (19°C) September: normal high 79°F (26°C), low 59°F (15°C) October: normal high 67°F (19°C), low 47°F (8°C) November: normal high 56°F (13°C), low 37°F (3°C) December: normal high 46°F (8°C), low 30°F (-1°C) JFMAMJJASOND

Best months: May

Dover, DE

20°40°60°80°100° January: normal high 44°F (7°C), low 28°F (-2°C) 44° 28° February: normal high 47°F (8°C), low 29°F (-2°C) March: normal high 55°F (13°C), low 35°F (2°C) April: normal high 66°F (19°C), low 45°F (7°C) May: normal high 74°F (23°C), low 54°F (12°C) June: normal high 83°F (28°C), low 64°F (18°C) July: normal high 87°F (31°C), low 69°F (21°C) 87° 69° August: normal high 85°F (29°C), low 67°F (19°C) September: normal high 79°F (26°C), low 61°F (16°C) October: normal high 69°F (21°C), low 50°F (10°C) November: normal high 58°F (14°C), low 39°F (4°C) December: normal high 49°F (9°C), low 32°F (0°C) JFMAMJJASOND

Best months: May

Which city for what

  • Milder winters: Dover (January high 44°F vs January high 41°F)
  • Fewer wet days: Dover (110 a year vs 122 a year)
  • Less humid: Wilmington (52 muggy days vs 74 muggy days)
  • Less snow: Dover (13.2 in vs 20.2 in)

Listed only where the difference is at least 3°F in highs, 10 days a year or 3 in of snow.

Season by season

SeasonAvg high WilmingtonAvg high DoverWet days WilmingtonWet days Dover
Winter (Dec-Feb)44°F47°F3129
Spring (Mar-May)63°F65°F3430
Summer (Jun-Aug)85°F85°F3026
Fall (Sep-Nov)67°F69°F2724

Side by side over a year

WilmingtonDover
Hot days (90°F+)2225
Freezing nights9279
Muggy days5274
Comfortable days7981
Precipitation45.3 in47.6 in
Snowfall20.2 in13.2 in
Frost dateslast Apr 7, first Nov 4last Apr 4, first Nov 4
Daylight in June / December14.9 h / 9.4 h14.9 h / 9.5 h
Best monthsMayMay

Day counts from each city's daily records, 1991-2020. Comfortable days: highs 65-80°F and dew point under 60°F.

Month by month

MonthHigh WilmingtonHigh DoverWet days WilmingtonWet days Dover
January41°F44°F1110
February44°F47°F109
March53°F55°F1110
April64°F66°F1110
May74°F74°F1210
June82°F83°F119
July87°F87°F109
August85°F85°F98
September79°F79°F98
October67°F69°F98
November56°F58°F97
December46°F49°F1110

Both charts use the same temperature scale.

Where the numbers come from

  • Wilmington, DE: temperature from Wilmington New Castle Co Airport (USW00013781), 5.8 mi SSW of the city center; precipitation from Wilmington New Castle Co Airport (USW00013781). NOAA 1991-2020 normals and daily records.
  • Dover, DE: temperature from Dover (USC00072730), 1.3 mi SE of the city center; precipitation from Dover (USC00072730). NOAA 1991-2020 normals and daily records.

Every station for each city, including humidity and frost, is listed on the city page. Methodology.