Weather World
St. Helena School Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 58°F Lo 44°F | Hi 62°F Lo 48°F | Hi 67°F Lo 53°F | Hi 74°F Lo 60°F | Hi 80°F Lo 67°F | Hi 87°F Lo 74°F | Hi 89°F Lo 77°F | Hi 87°F Lo 76°F | Hi 84°F Lo 72°F | Hi 76°F Lo 63°F | Hi 67°F Lo 54°F | Hi 61°F Lo 49°F |
| 8 mph | 8 mph | 8 mph | 8 mph | 8 mph | 7 mph | 7 mph | 7 mph | 7 mph | 8 mph | 8 mph | 8 mph |
| 3.1 in | 3.1 in | 3.6 in | 3.6 in | 4.5 in | 5.6 in | 6.4 in | 9.6 in | 4.6 in | 3.8 in | 2.6 in | 4.1 in |
| 70% | 74% | 71% | 73% | 74% | 74% | 75% | 76% | 74% | 72% | 71% | 75% |
| 36% | 41% | 37% | 30% | 34% | 34% | 36% | 41% | 36% | 30% | 33% | 40% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 26 | 23 | 26 | 24 | 22 | 17 | 16 | 13 | 20 | 26 | 25 | 25 |
| 5 | 5 | 5 | 6 | 9 | 13 | 15 | 18 | 10 | 5 | 5 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 3 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 4 | 4 |
| 213 | 177 | 201 | 233 | 215 | 198 | 194 | 181 | 201 | 232 | 218 | 199 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 14°C Lo 7°C | Hi 17°C Lo 9°C | Hi 20°C Lo 12°C | Hi 23°C Lo 15°C | Hi 27°C Lo 20°C | Hi 30°C Lo 23°C | Hi 32°C Lo 25°C | Hi 31°C Lo 25°C | Hi 29°C Lo 22°C | Hi 25°C Lo 17°C | Hi 20°C Lo 12°C | Hi 16°C Lo 9°C |
| 13 km/h | 13 km/h | 13 km/h | 13 km/h | 12 km/h | 12 km/h | 11 km/h | 11 km/h | 12 km/h | 12 km/h | 13 km/h | 13 km/h |
| 78 mm | 79 mm | 91 mm | 92 mm | 114 mm | 141 mm | 161 mm | 245 mm | 117 mm | 97 mm | 67 mm | 104 mm |
| 70% | 74% | 71% | 73% | 74% | 74% | 75% | 76% | 74% | 72% | 71% | 75% |
| 36% | 41% | 37% | 30% | 34% | 34% | 36% | 41% | 36% | 30% | 33% | 40% |
| 1021 mb | 1020 mb | 1019 mb | 1018 mb | 1017 mb | 1015 mb | 1016 mb | 1015 mb | 1016 mb | 1017 mb | 1020 mb | 1021 mb |
| 26 | 23 | 26 | 24 | 22 | 17 | 16 | 13 | 20 | 26 | 25 | 25 |
| 5 | 5 | 5 | 6 | 9 | 13 | 15 | 18 | 10 | 5 | 5 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 3 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 4 | 4 |
| 213 | 177 | 201 | 233 | 215 | 198 | 194 | 181 | 201 | 232 | 218 | 199 |
| 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.