Weather World
City of Prosser, WA
Prosser Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 39°F Lo 28°F | Hi 44°F Lo 30°F | Hi 54°F Lo 36°F | Hi 63°F Lo 42°F | Hi 73°F Lo 51°F | Hi 81°F Lo 58°F | Hi 91°F Lo 65°F | Hi 90°F Lo 65°F | Hi 79°F Lo 56°F | Hi 63°F Lo 45°F | Hi 49°F Lo 34°F | Hi 39°F Lo 28°F |
| 5 mph | 6 mph | 7 mph | 8 mph | 7 mph | 7 mph | 6 mph | 6 mph | 6 mph | 6 mph | 6 mph | 5 mph |
| 1.5 in | 1.1 in | 1.1 in | 0.8 in | 0.9 in | 0.4 in | 0.1 in | 0.2 in | 0.4 in | 1.1 in | 1.5 in | 1.6 in |
| 81% | 74% | 64% | 54% | 49% | 43% | 35% | 36% | 44% | 56% | 69% | 80% |
| 50% | 45% | 40% | 33% | 27% | 19% | 8% | 11% | 19% | 29% | 39% | 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 |
| 22 | 22 | 27 | 27 | 28 | 28 | 30 | 30 | 29 | 27 | 25 | 22 |
| 6 | 4 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 4 | 5 | 6 |
| 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 2 | 2 | 3 | 4 | 5 | 6 | 7 | 6 | 4 | 3 | 1 | 2 |
| 153 | 158 | 192 | 227 | 267 | 296 | 354 | 340 | 288 | 240 | 189 | 152 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 4°C Lo -2°C | Hi 7°C Lo -1°C | Hi 12°C Lo 2°C | Hi 17°C Lo 6°C | Hi 23°C Lo 10°C | Hi 27°C Lo 14°C | Hi 33°C Lo 18°C | Hi 32°C Lo 18°C | Hi 26°C Lo 13°C | Hi 17°C Lo 7°C | Hi 9°C Lo 1°C | Hi 4°C Lo -2°C |
| 8 km/h | 10 km/h | 12 km/h | 13 km/h | 12 km/h | 12 km/h | 10 km/h | 10 km/h | 10 km/h | 10 km/h | 10 km/h | 9 km/h |
| 37 mm | 28 mm | 27 mm | 19 mm | 22 mm | 10 mm | 3 mm | 4 mm | 10 mm | 27 mm | 37 mm | 41 mm |
| 81% | 74% | 64% | 54% | 49% | 43% | 35% | 36% | 44% | 56% | 69% | 80% |
| 50% | 45% | 40% | 33% | 27% | 19% | 8% | 11% | 19% | 29% | 39% | 50% |
| 1022 mb | 1019 mb | 1016 mb | 1016 mb | 1014 mb | 1013 mb | 1013 mb | 1013 mb | 1014 mb | 1017 mb | 1019 mb | 1020 mb |
| 22 | 22 | 27 | 27 | 28 | 28 | 30 | 30 | 29 | 27 | 25 | 22 |
| 6 | 4 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 4 | 5 | 6 |
| 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 2 | 2 | 3 | 4 | 5 | 6 | 7 | 6 | 4 | 3 | 1 | 2 |
| 153 | 158 | 192 | 227 | 267 | 296 | 354 | 340 | 288 | 240 | 189 | 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.