WeatherWX.comWashington Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 39°F Lo 25°F | Hi 42°F Lo 27°F | Hi 55°F Lo 38°F | Hi 65°F Lo 46°F | Hi 75°F Lo 56°F | Hi 85°F Lo 65°F | Hi 89°F Lo 68°F | Hi 88°F Lo 66°F | Hi 81°F Lo 59°F | Hi 67°F Lo 48°F | Hi 54°F Lo 38°F | Hi 44°F Lo 30°F |
| 9 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 6 mph | 6 mph | 6 mph | 7 mph | 8 mph | 8 mph |
| 2.7 in | 2.9 in | 4.6 in | 6.4 in | 6.3 in | 5.5 in | 4.6 in | 5.7 in | 4.1 in | 4.5 in | 3.3 in | 2.8 in |
| 75% | 76% | 75% | 75% | 78% | 76% | 75% | 73% | 72% | 70% | 71% | 75% |
| 49% | 50% | 47% | 42% | 38% | 27% | 27% | 28% | 28% | 33% | 36% | 46% |
| 30.1 in | 30.1 in | 30.1 in | 29.9 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 |
| 19 | 17 | 22 | 23 | 21 | 21 | 23 | 24 | 25 | 26 | 24 | 23 |
| 4 | 3 | 6 | 7 | 10 | 9 | 8 | 7 | 5 | 5 | 4 | 4 |
| 8 | 8 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| 3 | 3 | 2 | 3 | 5 | 5 | 4 | 5 | 5 | 3 | 1 | 2 |
| 2 | 2 | 3 | 4 | 5 | 7 | 6 | 6 | 5 | 3 | 2 | 2 |
| 162 | 145 | 162 | 175 | 204 | 251 | 258 | 257 | 248 | 226 | 209 | 174 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 4°C Lo -4°C | Hi 5°C Lo -3°C | Hi 13°C Lo 3°C | Hi 18°C Lo 8°C | Hi 24°C Lo 13°C | Hi 30°C Lo 18°C | Hi 32°C Lo 20°C | Hi 31°C Lo 19°C | Hi 27°C Lo 15°C | Hi 20°C Lo 9°C | Hi 12°C Lo 3°C | Hi 7°C Lo -1°C |
| 14 km/h | 14 km/h | 14 km/h | 13 km/h | 11 km/h | 10 km/h | 9 km/h | 9 km/h | 10 km/h | 12 km/h | 13 km/h | 13 km/h |
| 68 mm | 73 mm | 115 mm | 162 mm | 160 mm | 139 mm | 117 mm | 143 mm | 103 mm | 114 mm | 83 mm | 71 mm |
| 75% | 76% | 75% | 75% | 78% | 76% | 75% | 73% | 72% | 70% | 71% | 75% |
| 49% | 50% | 47% | 42% | 38% | 27% | 27% | 28% | 28% | 33% | 36% | 46% |
| 1021 mb | 1021 mb | 1018 mb | 1014 mb | 1014 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1020 mb | 1020 mb |
| 19 | 17 | 22 | 23 | 21 | 21 | 23 | 24 | 25 | 26 | 24 | 23 |
| 4 | 3 | 6 | 7 | 10 | 9 | 8 | 7 | 5 | 5 | 4 | 4 |
| 8 | 8 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| 3 | 3 | 2 | 3 | 5 | 5 | 4 | 5 | 5 | 3 | 1 | 2 |
| 2 | 2 | 3 | 4 | 5 | 7 | 6 | 6 | 5 | 3 | 2 | 2 |
| 162 | 145 | 162 | 175 | 204 | 251 | 258 | 257 | 248 | 226 | 209 | 174 |
| 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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