Delaware climate by month
January highs across Delaware range from 41°F in Wilmington to 44°F in Dover; July highs from 87°F in Wilmington to 87°F in Dover. The most common best months across these cities are May.
Delaware weather month by month
Average of the 2 Delaware cities on this site, computed from NOAA's unrounded values (so it can differ by a degree from averaging the rounded city figures); individual cities differ, sometimes a lot.
| Month | High | Low | Wet days | Snow |
|---|---|---|---|---|
| January | 43°F | 27°F | 10 | 5.1 in |
| February | 46°F | 28°F | 10 | 6.8 in |
| March | 54°F | 35°F | 11 | 1.9 in |
| April | 65°F | 44°F | 11 | 0.05 in |
| May | 74°F | 54°F | 11 | 0.0 in |
| June | 82°F | 63°F | 10 | 0.0 in |
| July | 87°F | 69°F | 10 | 0.0 in |
| August | 85°F | 67°F | 9 | 0.0 in |
| September | 79°F | 60°F | 9 | 0.0 in |
| October | 68°F | 48°F | 8 | 0.0 in |
| November | 57°F | 38°F | 8 | 0.1 in |
| December | 47°F | 31°F | 11 | 2.8 in |
Regional differences
- Warmest winterDover: January high 44°F
- Coolest summerWilmington: July high 87°F
- Most wet daysWilmington: 122 a year
- Fewest wet daysDover: 110 a year
- Most snowWilmington: 20.2 in a year
Warmest and coolest Delaware city each month
| Month | Warmest | Coolest | Best month for |
|---|---|---|---|
| January | Dover 44°F | Wilmington 41°F | – |
| February | Dover 47°F | Wilmington 44°F | – |
| March | Dover 55°F | Wilmington 53°F | – |
| April | Dover 66°F | Wilmington 64°F | – |
| May | Dover 74°F | Wilmington 74°F | 2 cities |
| June | Dover 83°F | Wilmington 82°F | – |
| July | Dover 87°F | Wilmington 87°F | – |
| August | Dover 85°F | Wilmington 85°F | – |
| September | Dover 79°F | Wilmington 79°F | – |
| October | Dover 69°F | Wilmington 67°F | – |
| November | Dover 58°F | Wilmington 56°F | – |
| December | Dover 49°F | Wilmington 46°F | – |
By normal daily high. "Best month for": how many of the 2 cities have it among their best months by our comfort score.
Frost and humidity across Delaware
- Earliest typical last frostDover: Apr 4
- Latest typical last frostWilmington: Apr 7
- Most muggy daysDover: 74 a year
- Fewest muggy daysWilmington: 52 a year
All Delaware cities
| City | Jan high | Jul high | Wet days/yr | Snow/yr | Best months |
|---|---|---|---|---|---|
| Dover | 44°F | 87°F | 110 | 13.2 in | May |
| Wilmington | 41°F | 87°F | 122 | 20.2 in | May |
Also covered: Newark (see Wilmington), Rehoboth Beach (see Cape May). These cities use the same weather stations as the city named.