Weather World
Riley Lake Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 27°F Lo 16°F | Hi 30°F Lo 17°F | Hi 42°F Lo 26°F | Hi 53°F Lo 36°F | Hi 66°F Lo 47°F | Hi 75°F Lo 56°F | Hi 80°F Lo 61°F | Hi 79°F Lo 60°F | Hi 72°F Lo 53°F | Hi 59°F Lo 43°F | Hi 45°F Lo 32°F | Hi 33°F Lo 24°F |
| 9 mph | 10 mph | 10 mph | 10 mph | 9 mph | 8 mph | 7 mph | 7 mph | 8 mph | 9 mph | 10 mph | 9 mph |
| 2.1 in | 2.3 in | 3.3 in | 4.5 in | 4.5 in | 4.6 in | 3.9 in | 3.5 in | 3 in | 4.2 in | 2.3 in | 2.5 in |
| 87% | 86% | 78% | 74% | 75% | 78% | 77% | 77% | 76% | 76% | 78% | 84% |
| 72% | 69% | 56% | 53% | 44% | 38% | 34% | 35% | 37% | 50% | 53% | 68% |
| 30.0 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.0 in |
| 17 | 15 | 20 | 20 | 23 | 22 | 23 | 24 | 24 | 24 | 22 | 19 |
| 9 | 8 | 7 | 8 | 8 | 8 | 8 | 7 | 6 | 7 | 6 | 7 |
| 6 | 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 |
| 1 | 1 | 2 | 2 | 4 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 62 | 66 | 115 | 133 | 178 | 201 | 222 | 225 | 205 | 138 | 128 | 74 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -3°C Lo -9°C | Hi -1°C Lo -9°C | Hi 5°C Lo -3°C | Hi 12°C Lo 2°C | Hi 19°C Lo 9°C | Hi 24°C Lo 13°C | Hi 27°C Lo 16°C | Hi 26°C Lo 15°C | Hi 23°C Lo 12°C | Hi 15°C Lo 6°C | Hi 7°C Lo 0°C | Hi 1°C Lo -4°C |
| 15 km/h | 15 km/h | 16 km/h | 16 km/h | 14 km/h | 13 km/h | 11 km/h | 11 km/h | 12 km/h | 15 km/h | 16 km/h | 15 km/h |
| 54 mm | 58 mm | 83 mm | 113 mm | 115 mm | 116 mm | 98 mm | 88 mm | 76 mm | 106 mm | 59 mm | 63 mm |
| 87% | 86% | 78% | 74% | 75% | 78% | 77% | 77% | 76% | 76% | 78% | 84% |
| 72% | 69% | 56% | 53% | 44% | 38% | 34% | 35% | 37% | 50% | 53% | 68% |
| 1018 mb | 1018 mb | 1018 mb | 1015 mb | 1015 mb | 1013 mb | 1014 mb | 1015 mb | 1017 mb | 1016 mb | 1018 mb | 1018 mb |
| 17 | 15 | 20 | 20 | 23 | 22 | 23 | 24 | 24 | 24 | 22 | 19 |
| 9 | 8 | 7 | 8 | 8 | 8 | 8 | 7 | 6 | 7 | 6 | 7 |
| 6 | 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 |
| 1 | 1 | 2 | 2 | 4 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 62 | 66 | 115 | 133 | 178 | 201 | 222 | 225 | 205 | 138 | 128 | 74 |
| 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.