Weather World
Chelmsford Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 44°F Lo 36°F | Hi 46°F Lo 37°F | Hi 51°F Lo 39°F | Hi 56°F Lo 41°F | Hi 61°F Lo 46°F | Hi 67°F Lo 52°F | Hi 72°F Lo 56°F | Hi 72°F Lo 57°F | Hi 67°F Lo 53°F | Hi 59°F Lo 49°F | Hi 51°F Lo 43°F | Hi 46°F Lo 39°F |
| 11 mph | 12 mph | 10 mph | 9 mph | 9 mph | 9 mph | 9 mph | 9 mph | 9 mph | 10 mph | 11 mph | 12 mph |
| 2.2 in | 1.9 in | 1.7 in | 1.5 in | 2 in | 2.4 in | 2.3 in | 2.4 in | 1.9 in | 2.7 in | 2.4 in | 2.4 in |
| 87% | 84% | 82% | 79% | 80% | 79% | 73% | 71% | 75% | 81% | 85% | 88% |
| 57% | 61% | 54% | 49% | 51% | 49% | 48% | 44% | 46% | 54% | 57% | 60% |
| 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in |
| 23 | 21 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 24 | 22 | 23 |
| 7 | 6 | 5 | 5 | 6 | 6 | 7 | 7 | 5 | 7 | 7 | 8 |
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 2 | 2 |
| 121 | 85 | 121 | 139 | 115 | 124 | 123 | 150 | 146 | 117 | 111 | 111 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 7°C Lo 2°C | Hi 8°C Lo 3°C | Hi 10°C Lo 4°C | Hi 13°C Lo 5°C | Hi 16°C Lo 8°C | Hi 20°C Lo 11°C | Hi 22°C Lo 13°C | Hi 22°C Lo 14°C | Hi 19°C Lo 12°C | Hi 15°C Lo 9°C | Hi 10°C Lo 6°C | Hi 8°C Lo 4°C |
| 11 mph | 12 mph | 10 mph | 9 mph | 9 mph | 9 mph | 9 mph | 9 mph | 9 mph | 10 mph | 11 mph | 12 mph |
| 57 mm | 48 mm | 43 mm | 37 mm | 52 mm | 60 mm | 57 mm | 62 mm | 48 mm | 69 mm | 62 mm | 61 mm |
| 87% | 84% | 82% | 79% | 80% | 79% | 73% | 71% | 75% | 81% | 85% | 88% |
| 57% | 61% | 54% | 49% | 51% | 49% | 48% | 44% | 46% | 54% | 57% | 60% |
| 1015 mb | 1014 mb | 1015 mb | 1016 mb | 1017 mb | 1016 mb | 1016 mb | 1015 mb | 1016 mb | 1014 mb | 1012 mb | 1014 mb |
| 23 | 21 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 24 | 22 | 23 |
| 7 | 6 | 5 | 5 | 6 | 6 | 7 | 7 | 5 | 7 | 7 | 8 |
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 2 | 2 |
| 121 | 85 | 121 | 139 | 115 | 124 | 123 | 150 | 146 | 117 | 111 | 111 |
| 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.