Stamford, Connecticut Climate by Month
Stamford, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
Warm summers and cold winters, with rain spread through the year: that's Stamford's climate in short. July is the warmest month, with highs around 85°F (30°C); January is the coolest at 39°F (4°C), and nights dip to 22°F (-5°C). About 48 in (1218 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(30°C)
- Average high, July
- Coldest nights
- 22°F(-5°C)
- Average low, January
- Rain per year
- 48 in(1218 mm)
- No clear rainy season
- Humidity
- 67%
- Sunniest: July
Best and worst months in Stamford
Best for weatherThe most comfortable weather comes in May and September, with highs around 74°F (23°C) and about 4.1 in (103 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 39°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)
Stamford weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 39°F(4°C) | 22°F(-5°C) | 3.5 in(90 mm) | 69% | 1.8 |
| FebFebruary | 42°F(5°C) | 24°F(-4°C) | 3.1 in(79 mm) | 64% | 2.6 |
| MarMarch | 50°F(10°C) | 31°F(-1°C) | 4.4 in(112 mm) | 59% | 3.6 |
| AprApril | 61°F(16°C) | 40°F(5°C) | 4.1 in(105 mm) | 56% | 4.5 |
| MayMayBest | 71°F(22°C) | 50°F(10°C) | 3.9 in(99 mm) | 67% | 5.3 |
| JunJune | 80°F(27°C) | 59°F(15°C) | 4.3 in(108 mm) | 69% | 5.7 |
| JulJuly | 85°F(30°C) | 65°F(18°C) | 3.9 in(100 mm) | 67% | 5.7 |
| AugAugust | 83°F(29°C) | 64°F(18°C) | 4.0 in(102 mm) | 70% | 5.1 |
| SepSeptemberBest | 77°F(25°C) | 57°F(14°C) | 4.2 in(107 mm) | 71% | 4.0 |
| OctOctober | 65°F(19°C) | 45°F(7°C) | 4.5 in(115 mm) | 74% | 2.8 |
| NovNovember | 54°F(12°C) | 37°F(3°C) | 3.7 in(93 mm) | 68% | 1.9 |
| DecDecember | 44°F(7°C) | 28°F(-2°C) | 4.3 in(108 mm) | 70% | 1.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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