WeatherWX.com
Washington Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 41°F Lo 29°F | Hi 45°F Lo 31°F | Hi 54°F Lo 38°F | Hi 66°F Lo 48°F | Hi 75°F Lo 57°F | Hi 84°F Lo 65°F | Hi 90°F Lo 70°F | Hi 88°F Lo 69°F | Hi 81°F Lo 63°F | Hi 69°F Lo 53°F | Hi 56°F Lo 42°F | Hi 47°F Lo 35°F |
| 8 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 5 mph | 5 mph | 6 mph | 7 mph | 7 mph | 7 mph |
| 3.1 in | 4 in | 4.1 in | 4.1 in | 5.4 in | 4.7 in | 5.4 in | 5.4 in | 4.4 in | 4.4 in | 2.9 in | 3.9 in |
| 71% | 73% | 70% | 69% | 75% | 72% | 69% | 70% | 71% | 72% | 70% | 73% |
| 42% | 44% | 44% | 41% | 42% | 32% | 29% | 31% | 34% | 37% | 34% | 43% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 21 | 16 | 21 | 23 | 23 | 24 | 25 | 25 | 25 | 27 | 26 | 23 |
| 5 | 7 | 7 | 7 | 8 | 6 | 6 | 6 | 5 | 4 | 4 | 6 |
| 5 | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| 2 | 2 | 2 | 2 | 6 | 5 | 4 | 3 | 4 | 3 | 2 | 3 |
| 2 | 2 | 3 | 4 | 6 | 7 | 7 | 7 | 5 | 4 | 3 | 2 |
| 185 | 163 | 173 | 187 | 194 | 233 | 249 | 238 | 217 | 214 | 218 | 185 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 5°C Lo -2°C | Hi 7°C Lo -1°C | Hi 12°C Lo 4°C | Hi 19°C Lo 9°C | Hi 24°C Lo 14°C | Hi 29°C Lo 18°C | Hi 32°C Lo 21°C | Hi 31°C Lo 21°C | Hi 27°C Lo 17°C | Hi 21°C Lo 12°C | Hi 13°C Lo 5°C | Hi 8°C Lo 2°C |
| 12 km/h | 13 km/h | 13 km/h | 13 km/h | 10 km/h | 9 km/h | 8 km/h | 8 km/h | 9 km/h | 11 km/h | 11 km/h | 11 km/h |
| 79 mm | 101 mm | 104 mm | 104 mm | 137 mm | 119 mm | 138 mm | 138 mm | 112 mm | 112 mm | 75 mm | 98 mm |
| 71% | 73% | 70% | 69% | 75% | 72% | 69% | 70% | 71% | 72% | 70% | 73% |
| 42% | 44% | 44% | 41% | 42% | 32% | 29% | 31% | 34% | 37% | 34% | 43% |
| 1019 mb | 1019 mb | 1019 mb | 1016 mb | 1017 mb | 1014 mb | 1015 mb | 1016 mb | 1017 mb | 1017 mb | 1021 mb | 1020 mb |
| 21 | 16 | 21 | 23 | 23 | 24 | 25 | 25 | 25 | 27 | 26 | 23 |
| 5 | 7 | 7 | 7 | 8 | 6 | 6 | 6 | 5 | 4 | 4 | 6 |
| 5 | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| 2 | 2 | 2 | 2 | 6 | 5 | 4 | 3 | 4 | 3 | 2 | 3 |
| 2 | 2 | 3 | 4 | 6 | 7 | 7 | 7 | 5 | 4 | 3 | 2 |
| 185 | 163 | 173 | 187 | 194 | 233 | 249 | 238 | 217 | 214 | 218 | 185 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.
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