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Weather & Climate
Middlesex County, Connecticut, United States
Overview
Climate data and monthly weather averages for Middlesex County.
Key Metrics
Annual Avg
10.4°C
Summer Avg
21.9°C
Winter Avg
-1°C
Record High
38°C
Record Low
-24.3°C
Annual Precipitation
1163.8 mm
Avg Humidity
80%
Summer Humidity
76%
Winter Humidity
86%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 17.3° | -2.4° | -23.6° | 76.3 | 87% | 58 | 41.4 |
| Feb | 17.2° | -1.6° | -24.3° | 80.9 | 85% | 76 | 36.2 |
| Mar | 22.7° | 2.3° | -18.5° | 102 | 82% | 115 | 36.4 |
| Apr | 31.8° | 8.2° | -5.9° | 104.7 | 78% | 146 | 34.9 |
| May | 30.5° | 14.1° | 0.8° | 89.3 | 78% | 170 | 23.3 |
| Jun | 34.3° | 19.4° | 4.6° | 106.8 | 79% | 177 | 20.6 |
| Jul | 37.8° | 23.3° | 10.3° | 93 | 75% | 187 | 18.3 |
| Aug | 38° | 22.9° | 10.8° | 93.3 | 74% | 165 | 33.9 |
| Sep | 35.1° | 19.1° | 5° | 100.2 | 75% | 131 | 27.3 |
| Oct | 30.1° | 12.6° | -5.2° | 116.6 | 78% | 90 | 39.1 |
| Nov | 24.3° | 6.4° | -12.5° | 90.3 | 81% | 62 | 34.3 |
| Dec | 19.8° | 1.1° | -15.7° | 110.4 | 86% | 48 | 37 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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