Weather World
Guidonia Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 52°F Lo 37°F | Hi 55°F Lo 38°F | Hi 60°F Lo 41°F | Hi 67°F Lo 45°F | Hi 74°F Lo 51°F | Hi 85°F Lo 59°F | Hi 91°F Lo 65°F | Hi 91°F Lo 66°F | Hi 81°F Lo 60°F | Hi 72°F Lo 53°F | Hi 62°F Lo 46°F | Hi 54°F Lo 39°F |
| 6 mph | 6 mph | 6 mph | 5 mph | 5 mph | 5 mph | 5 mph | 5 mph | 5 mph | 5 mph | 6 mph | 6 mph |
| 4.2 in | 3.8 in | 3.7 in | 2.6 in | 2.9 in | 1.6 in | 0.9 in | 1.2 in | 3.4 in | 4.1 in | 6.8 in | 4.8 in |
| 77% | 75% | 73% | 71% | 70% | 61% | 55% | 55% | 64% | 69% | 76% | 76% |
| 42% | 40% | 38% | 34% | 32% | 18% | 13% | 14% | 26% | 29% | 40% | 36% |
| 30.0 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in |
| 24 | 21 | 25 | 24 | 23 | 26 | 28 | 27 | 25 | 25 | 21 | 24 |
| 7 | 7 | 7 | 6 | 8 | 5 | 3 | 4 | 5 | 6 | 9 | 7 |
| 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 3 | 4 | 4 | 5 | 6 | 7 | 6 | 5 | 4 | 3 | 2 |
| 190 | 184 | 204 | 215 | 218 | 277 | 312 | 327 | 259 | 238 | 191 | 218 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 11°C Lo 3°C | Hi 13°C Lo 3°C | Hi 16°C Lo 5°C | Hi 19°C Lo 7°C | Hi 23°C Lo 11°C | Hi 29°C Lo 15°C | Hi 33°C Lo 18°C | Hi 33°C Lo 19°C | Hi 27°C Lo 15°C | Hi 22°C Lo 12°C | Hi 17°C Lo 8°C | Hi 12°C Lo 4°C |
| 9 km/h | 10 km/h | 9 km/h | 9 km/h | 8 km/h | 8 km/h | 8 km/h | 8 km/h | 8 km/h | 8 km/h | 9 km/h | 9 km/h |
| 106 mm | 97 mm | 94 mm | 66 mm | 74 mm | 40 mm | 23 mm | 31 mm | 85 mm | 105 mm | 173 mm | 121 mm |
| 77% | 75% | 73% | 71% | 70% | 61% | 55% | 55% | 64% | 69% | 76% | 76% |
| 42% | 40% | 38% | 34% | 32% | 18% | 13% | 14% | 26% | 29% | 40% | 36% |
| 1016 mb | 1016 mb | 1015 mb | 1014 mb | 1015 mb | 1015 mb | 1014 mb | 1014 mb | 1016 mb | 1017 mb | 1015 mb | 1018 mb |
| 24 | 21 | 25 | 24 | 23 | 26 | 28 | 27 | 25 | 25 | 21 | 24 |
| 7 | 7 | 7 | 6 | 8 | 5 | 3 | 4 | 5 | 6 | 9 | 7 |
| 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 3 | 4 | 4 | 5 | 6 | 7 | 6 | 5 | 4 | 3 | 2 |
| 190 | 184 | 204 | 215 | 218 | 277 | 312 | 327 | 259 | 238 | 191 | 218 |
| 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.