Weather World
Nantucket County Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 40°F Lo 33°F | Hi 40°F Lo 32°F | Hi 42°F Lo 37°F | Hi 48°F Lo 44°F | Hi 55°F Lo 51°F | Hi 63°F Lo 60°F | Hi 71°F Lo 68°F | Hi 72°F Lo 69°F | Hi 68°F Lo 64°F | Hi 61°F Lo 56°F | Hi 53°F Lo 47°F | Hi 46°F Lo 39°F |
| 19 mph | 18 mph | 19 mph | 16 mph | 15 mph | 13 mph | 13 mph | 12 mph | 14 mph | 17 mph | 18 mph | 19 mph |
| 5.1 in | 5.5 in | 5.2 in | 4.5 in | 4.5 in | 3.9 in | 3.8 in | 4 in | 5.7 in | 6.3 in | 5 in | 6 in |
| 75% | 77% | 78% | 80% | 85% | 85% | 85% | 82% | 80% | 78% | 74% | 76% |
| 53% | 54% | 52% | 48% | 47% | 38% | 35% | 32% | 38% | 45% | 44% | 54% |
| 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.0 in | 30.1 in | 30.0 in |
| 20 | 17 | 22 | 23 | 25 | 24 | 26 | 25 | 24 | 24 | 23 | 22 |
| 8 | 8 | 9 | 7 | 6 | 6 | 5 | 6 | 6 | 7 | 7 | 8 |
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 |
| 1 | 2 | 2 | 3 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 2 |
| 145 | 129 | 154 | 169 | 168 | 192 | 215 | 240 | 207 | 179 | 175 | 140 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 5°C Lo 0°C | Hi 4°C Lo 0°C | Hi 6°C Lo 3°C | Hi 9°C Lo 6°C | Hi 13°C Lo 11°C | Hi 17°C Lo 16°C | Hi 22°C Lo 20°C | Hi 22°C Lo 21°C | Hi 20°C Lo 18°C | Hi 16°C Lo 14°C | Hi 12°C Lo 8°C | Hi 8°C Lo 4°C |
| 31 km/h | 30 km/h | 30 km/h | 26 km/h | 23 km/h | 21 km/h | 20 km/h | 20 km/h | 23 km/h | 27 km/h | 30 km/h | 30 km/h |
| 130 mm | 140 mm | 132 mm | 115 mm | 114 mm | 99 mm | 97 mm | 101 mm | 146 mm | 160 mm | 126 mm | 153 mm |
| 75% | 77% | 78% | 80% | 85% | 85% | 85% | 82% | 80% | 78% | 74% | 76% |
| 53% | 54% | 52% | 48% | 47% | 38% | 35% | 32% | 38% | 45% | 44% | 54% |
| 1015 mb | 1016 mb | 1017 mb | 1016 mb | 1017 mb | 1014 mb | 1015 mb | 1016 mb | 1018 mb | 1017 mb | 1018 mb | 1017 mb |
| 20 | 17 | 22 | 23 | 25 | 24 | 26 | 25 | 24 | 24 | 23 | 22 |
| 8 | 8 | 9 | 7 | 6 | 6 | 5 | 6 | 6 | 7 | 7 | 8 |
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 |
| 1 | 2 | 2 | 3 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 2 |
| 145 | 129 | 154 | 169 | 168 | 192 | 215 | 240 | 207 | 179 | 175 | 140 |
| 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.