Washington DC, USA: Annual Weather Averages
July is the hottest month in Washington DC with an average temperature of 80°F (27°C) and the coldest is January at 38°F (4°C) with the most daily sunshine hours at 9 in July. The wettest month is May with an average of 100mm of rain.
Average Temperature: Washington DC
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 4 | 5 | 9 | 14 | 19 | 24 | 27 | 26 | 22 | 15 | 11 | 5 |
| °F | 39 | 41 | 48 | 57 | 66 | 75 | 81 | 79 | 72 | 59 | 52 | 41 |
Average High/Low Temperature: Washington DC
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 9 | 10 | 15 | 19 | 24 | 29 | 31 | 30 | 27 | 20 | 15 | 9 |
| High °F | 48 | 50 | 59 | 66 | 75 | 84 | 88 | 86 | 81 | 68 | 59 | 48 |
| Low °C | -2 | -1 | 3 | 8 | 14 | 19 | 22 | 21 | 17 | 10 | 6 | 0 |
| Low °F | 28 | 30 | 37 | 46 | 57 | 66 | 72 | 70 | 63 | 50 | 43 | 32 |
Average Rainfall: Washington DC
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 70 | 70 | 70 | 70 | 100 | 80 | 90 | 80 | 80 | 70 | 80 | 80 |
| Days | 12 | 9 | 13 | 14 | 15 | 14 | 14 | 12 | 11 | 11 | 11 | 11 |
Average Daily Sunshine Hours: Washington DC
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 5 | 6 | 7 | 8 | 9 | 9 | 9 | 8 | 8 | 7 | 5 | 4 |
Average Sea Temperature: Washington DC
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °F | 3 | 3 | 8 | 12 | 18 | 23 | 27 | 28 | 26 | 18 | 11 | 5 |