Weather World
Lake Wallula Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 41°F Lo 30°F | Hi 46°F Lo 32°F | Hi 55°F Lo 38°F | Hi 64°F Lo 43°F | Hi 74°F Lo 52°F | Hi 82°F Lo 58°F | Hi 92°F Lo 66°F | Hi 91°F Lo 66°F | Hi 81°F Lo 58°F | Hi 64°F Lo 47°F | Hi 50°F Lo 37°F | Hi 41°F Lo 30°F |
| 6 mph | 7 mph | 8 mph | 9 mph | 8 mph | 9 mph | 8 mph | 7 mph | 7 mph | 7 mph | 7 mph | 6 mph |
| 1.3 in | 1.3 in | 1 in | 0.7 in | 0.8 in | 0.4 in | 0.1 in | 0.2 in | 0.3 in | 0.8 in | 1.5 in | 1.7 in |
| 79% | 73% | 64% | 55% | 51% | 44% | 35% | 36% | 43% | 54% | 67% | 77% |
| 47% | 46% | 41% | 33% | 27% | 19% | 8% | 11% | 17% | 29% | 40% | 50% |
| 30.2 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.1 in | 30.1 in |
| 24 | 22 | 27 | 27 | 28 | 28 | 31 | 30 | 29 | 28 | 25 | 23 |
| 5 | 4 | 4 | 3 | 3 | 2 | 0 | 1 | 1 | 3 | 5 | 6 |
| 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 2 | 2 | 3 | 4 | 5 | 6 | 7 | 6 | 4 | 3 | 2 | 2 |
| 159 | 155 | 184 | 224 | 242 | 274 | 331 | 321 | 297 | 240 | 184 | 152 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 5°C Lo -1°C | Hi 8°C Lo 0°C | Hi 13°C Lo 3°C | Hi 18°C Lo 6°C | Hi 23°C Lo 11°C | Hi 28°C Lo 15°C | Hi 34°C Lo 19°C | Hi 33°C Lo 19°C | Hi 27°C Lo 15°C | Hi 18°C Lo 8°C | Hi 10°C Lo 3°C | Hi 5°C Lo -1°C |
| 10 km/h | 12 km/h | 13 km/h | 14 km/h | 14 km/h | 14 km/h | 13 km/h | 12 km/h | 11 km/h | 11 km/h | 11 km/h | 10 km/h |
| 33 mm | 33 mm | 26 mm | 18 mm | 20 mm | 11 mm | 2 mm | 5 mm | 8 mm | 21 mm | 38 mm | 44 mm |
| 79% | 73% | 64% | 55% | 51% | 44% | 35% | 36% | 43% | 54% | 67% | 77% |
| 47% | 46% | 41% | 33% | 27% | 19% | 8% | 11% | 17% | 29% | 40% | 50% |
| 1022 mb | 1019 mb | 1016 mb | 1016 mb | 1014 mb | 1013 mb | 1013 mb | 1012 mb | 1014 mb | 1017 mb | 1019 mb | 1021 mb |
| 24 | 22 | 27 | 27 | 28 | 28 | 31 | 30 | 29 | 28 | 25 | 23 |
| 5 | 4 | 4 | 3 | 3 | 2 | 0 | 1 | 1 | 3 | 5 | 6 |
| 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 2 | 2 | 3 | 4 | 5 | 6 | 7 | 6 | 4 | 3 | 2 | 2 |
| 159 | 155 | 184 | 224 | 242 | 274 | 331 | 321 | 297 | 240 | 184 | 152 |
| 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.