Weather World
Potomac Creek Site Two Lake Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 43°F Lo 29°F | Hi 47°F Lo 31°F | Hi 56°F Lo 38°F | Hi 67°F Lo 48°F | Hi 75°F Lo 57°F | Hi 84°F Lo 65°F | Hi 89°F Lo 70°F | Hi 86°F Lo 68°F | Hi 80°F Lo 62°F | Hi 68°F Lo 52°F | Hi 56°F Lo 41°F | Hi 48°F Lo 34°F |
| 6 mph | 7 mph | 7 mph | 7 mph | 6 mph | 6 mph | 5 mph | 5 mph | 5 mph | 6 mph | 6 mph | 6 mph |
| 3.7 in | 3.8 in | 3.9 in | 4.4 in | 5.4 in | 4.5 in | 4.9 in | 4.4 in | 4.6 in | 4.5 in | 3.5 in | 4.4 in |
| 72% | 74% | 73% | 71% | 76% | 71% | 71% | 73% | 75% | 74% | 72% | 76% |
| 42% | 46% | 45% | 42% | 46% | 36% | 36% | 38% | 41% | 37% | 35% | 44% |
| 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 | 30.1 in | 30.1 in | 30.1 in |
| 22 | 19 | 23 | 23 | 22 | 22 | 21 | 21 | 23 | 26 | 25 | 23 |
| 7 | 7 | 7 | 7 | 9 | 8 | 10 | 10 | 7 | 5 | 5 | 6 |
| 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 190 | 154 | 169 | 185 | 182 | 221 | 220 | 210 | 193 | 207 | 220 | 187 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 6°C Lo -2°C | Hi 9°C Lo -1°C | Hi 13°C Lo 3°C | Hi 19°C Lo 9°C | Hi 24°C Lo 14°C | Hi 29°C Lo 18°C | Hi 32°C Lo 21°C | Hi 30°C Lo 20°C | Hi 26°C Lo 17°C | Hi 20°C Lo 11°C | Hi 13°C Lo 5°C | Hi 9°C Lo 1°C |
| 10 km/h | 11 km/h | 11 km/h | 11 km/h | 10 km/h | 9 km/h | 8 km/h | 8 km/h | 9 km/h | 10 km/h | 10 km/h | 9 km/h |
| 93 mm | 97 mm | 100 mm | 111 mm | 137 mm | 115 mm | 125 mm | 111 mm | 118 mm | 115 mm | 88 mm | 112 mm |
| 72% | 74% | 73% | 71% | 76% | 71% | 71% | 73% | 75% | 74% | 72% | 76% |
| 42% | 46% | 45% | 42% | 46% | 36% | 36% | 38% | 41% | 37% | 35% | 44% |
| 1020 mb | 1019 mb | 1018 mb | 1016 mb | 1016 mb | 1014 mb | 1015 mb | 1016 mb | 1017 mb | 1018 mb | 1021 mb | 1020 mb |
| 22 | 19 | 23 | 23 | 22 | 22 | 21 | 21 | 23 | 26 | 25 | 23 |
| 7 | 7 | 7 | 7 | 9 | 8 | 10 | 10 | 7 | 5 | 5 | 6 |
| 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 190 | 154 | 169 | 185 | 182 | 221 | 220 | 210 | 193 | 207 | 220 | 187 |
| 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.