WeatherWX.com
Webster Groves Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 39°F Lo 25°F | Hi 43°F Lo 27°F | Hi 55°F Lo 39°F | Hi 65°F Lo 47°F | Hi 75°F Lo 58°F | Hi 85°F Lo 68°F | Hi 88°F Lo 71°F | Hi 87°F Lo 69°F | Hi 81°F Lo 62°F | Hi 68°F Lo 51°F | Hi 54°F Lo 39°F | Hi 44°F Lo 31°F |
| 9 mph | 9 mph | 9 mph | 9 mph | 7 mph | 6 mph | 6 mph | 6 mph | 6 mph | 8 mph | 8 mph | 9 mph |
| 1 in | 1.1 in | 1.7 in | 2.3 in | 2.3 in | 2 in | 1.6 in | 1.7 in | 1.3 in | 1.6 in | 1.3 in | 1.2 in |
| 74% | 75% | 74% | 74% | 77% | 75% | 75% | 74% | 70% | 67% | 69% | 73% |
| 50% | 49% | 46% | 43% | 39% | 29% | 29% | 28% | 27% | 33% | 35% | 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 |
| 23 | 19 | 23 | 22 | 22 | 22 | 24 | 25 | 24 | 25 | 25 | 25 |
| 5 | 6 | 8 | 8 | 9 | 8 | 7 | 7 | 6 | 7 | 5 | 5 |
| 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 53 | 51 | 56 | 59 | 66 | 79 | 84 | 87 | 82 | 76 | 71 | 58 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 4°C Lo -4°C | Hi 6°C Lo -3°C | Hi 13°C Lo 4°C | Hi 19°C Lo 8°C | Hi 24°C Lo 15°C | Hi 30°C Lo 20°C | Hi 31°C Lo 21°C | Hi 30°C Lo 20°C | Hi 27°C Lo 17°C | Hi 20°C Lo 10°C | Hi 12°C Lo 4°C | Hi 7°C Lo -1°C |
| 15 km/h | 14 km/h | 14 km/h | 14 km/h | 12 km/h | 10 km/h | 9 km/h | 9 km/h | 10 km/h | 13 km/h | 14 km/h | 14 km/h |
| 25 mm | 28 mm | 42 mm | 58 mm | 59 mm | 51 mm | 41 mm | 43 mm | 34 mm | 40 mm | 33 mm | 30 mm |
| 74% | 75% | 74% | 74% | 77% | 75% | 75% | 74% | 70% | 67% | 69% | 73% |
| 50% | 49% | 46% | 43% | 39% | 29% | 29% | 28% | 27% | 33% | 35% | 46% |
| 1021 mb | 1020 mb | 1018 mb | 1014 mb | 1015 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1020 mb | 1020 mb |
| 23 | 19 | 23 | 22 | 22 | 22 | 24 | 25 | 24 | 25 | 25 | 25 |
| 5 | 6 | 8 | 8 | 9 | 8 | 7 | 7 | 6 | 7 | 5 | 5 |
| 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 53 | 51 | 56 | 59 | 66 | 79 | 84 | 87 | 82 | 76 | 71 | 58 |
| 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.