Weather World
Riley Lake Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 33°F Lo 20°F | Hi 38°F Lo 23°F | Hi 51°F Lo 34°F | Hi 61°F Lo 43°F | Hi 72°F Lo 54°F | Hi 80°F Lo 63°F | Hi 83°F Lo 65°F | Hi 82°F Lo 63°F | Hi 78°F Lo 58°F | Hi 65°F Lo 47°F | Hi 50°F Lo 36°F | Hi 40°F Lo 28°F |
| 10 mph | 10 mph | 10 mph | 10 mph | 9 mph | 8 mph | 6 mph | 7 mph | 7 mph | 10 mph | 10 mph | 10 mph |
| 2.8 in | 2.9 in | 4.7 in | 6.5 in | 5.9 in | 5.4 in | 5.1 in | 3.7 in | 3.1 in | 4 in | 3.5 in | 3.2 in |
| 80% | 80% | 75% | 75% | 78% | 79% | 83% | 80% | 74% | 70% | 73% | 79% |
| 60% | 57% | 50% | 49% | 45% | 35% | 36% | 33% | 33% | 38% | 43% | 57% |
| 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 |
| 18 | 17 | 21 | 21 | 21 | 21 | 22 | 24 | 24 | 24 | 24 | 22 |
| 8 | 7 | 8 | 8 | 10 | 9 | 9 | 7 | 6 | 7 | 6 | 7 |
| 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 2 |
| 1 | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 2 | 2 | 1 |
| 112 | 118 | 152 | 153 | 168 | 215 | 214 | 229 | 223 | 195 | 183 | 127 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -7°C | Hi 3°C Lo -5°C | Hi 11°C Lo 1°C | Hi 16°C Lo 6°C | Hi 22°C Lo 12°C | Hi 27°C Lo 17°C | Hi 28°C Lo 18°C | Hi 28°C Lo 17°C | Hi 25°C Lo 14°C | Hi 18°C Lo 8°C | Hi 10°C Lo 2°C | Hi 4°C Lo -2°C |
| 16 km/h | 16 km/h | 17 km/h | 17 km/h | 14 km/h | 12 km/h | 10 km/h | 11 km/h | 12 km/h | 15 km/h | 16 km/h | 16 km/h |
| 70 mm | 74 mm | 119 mm | 166 mm | 149 mm | 137 mm | 128 mm | 93 mm | 79 mm | 102 mm | 88 mm | 82 mm |
| 80% | 80% | 75% | 75% | 78% | 79% | 83% | 80% | 74% | 70% | 73% | 79% |
| 60% | 57% | 50% | 49% | 45% | 35% | 36% | 33% | 33% | 38% | 43% | 57% |
| 1020 mb | 1020 mb | 1018 mb | 1015 mb | 1015 mb | 1014 mb | 1015 mb | 1016 mb | 1017 mb | 1017 mb | 1020 mb | 1020 mb |
| 18 | 17 | 21 | 21 | 21 | 21 | 22 | 24 | 24 | 24 | 24 | 22 |
| 8 | 7 | 8 | 8 | 10 | 9 | 9 | 7 | 6 | 7 | 6 | 7 |
| 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 2 |
| 1 | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 2 | 2 | 1 |
| 112 | 118 | 152 | 153 | 168 | 215 | 214 | 229 | 223 | 195 | 183 | 127 |
| 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.