Fairfield, Connecticut Climate by Month
Fairfield, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
The climate in Fairfield is one of warm summers and cold winters, with rain spread through the year. Expect highs of 84°F (29°C) in July and 38°F (4°C) in January, with the coldest nights (January) near 22°F (-5°C). It gets 47 in (1196 mm) of rain a year, spread across the months.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 22°F(-5°C)
- Average low, January
- Rain per year
- 47 in(1196 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: July
Best and worst months in Fairfield
Best for weatherSeptember is the best time for weather in Fairfield: highs near 75°F (24°C) and about 3.9 in (100 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 38°F (4°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Fairfield weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(4°C) | 22°F(-5°C) | 3.5 in(90 mm) | 70% | 1.8 |
| FebFebruary | 41°F(5°C) | 24°F(-5°C) | 3.1 in(80 mm) | 65% | 2.6 |
| MarMarch | 49°F(9°C) | 30°F(-1°C) | 4.3 in(110 mm) | 61% | 3.6 |
| AprApril | 60°F(15°C) | 40°F(4°C) | 4.2 in(107 mm) | 58% | 4.6 |
| MayMay | 70°F(21°C) | 49°F(10°C) | 3.9 in(98 mm) | 63% | 5.3 |
| JunJune | 79°F(26°C) | 59°F(15°C) | 4.2 in(107 mm) | 71% | 5.7 |
| JulJuly | 84°F(29°C) | 65°F(18°C) | 3.8 in(97 mm) | 69% | 5.8 |
| AugAugust | 82°F(28°C) | 64°F(18°C) | 3.7 in(94 mm) | 72% | 5.2 |
| SepSeptemberBest | 75°F(24°C) | 56°F(14°C) | 3.9 in(100 mm) | 74% | 4.0 |
| OctOctober | 64°F(18°C) | 45°F(7°C) | 4.4 in(112 mm) | 76% | 2.8 |
| NovNovember | 53°F(12°C) | 36°F(2°C) | 3.7 in(93 mm) | 70% | 1.9 |
| DecDecember | 43°F(6°C) | 28°F(-2°C) | 4.3 in(108 mm) | 71% | 1.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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