Westport Climate by Month
Westport, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
Westport has warm summers and cold winters, with rain spread through the year. Afternoon highs range from 38°F (4°C) in January to 84°F (29°C) in July, and January nights average 22°F (-5°C). About 48 in (1211 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 22°F(-5°C)
- Average low, January
- Rain per year
- 48 in(1211 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: July
Best and worst months in Westport
Best for weatherSeptember is the best time for weather in Westport: highs near 76°F (24°C) and about 4.1 in (104 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)
Westport weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(4°C) | 22°F(-5°C) | 3.6 in(91 mm) | 70% | 1.8 |
| FebFebruary | 41°F(5°C) | 23°F(-5°C) | 3.1 in(80 mm) | 65% | 2.6 |
| MarMarch | 49°F(9°C) | 30°F(-1°C) | 4.4 in(111 mm) | 61% | 3.6 |
| AprApril | 60°F(16°C) | 40°F(4°C) | 4.2 in(107 mm) | 58% | 4.5 |
| MayMay | 70°F(21°C) | 49°F(10°C) | 3.9 in(100 mm) | 63% | 5.3 |
| JunJune | 79°F(26°C) | 58°F(15°C) | 4.3 in(108 mm) | 71% | 5.7 |
| JulJuly | 84°F(29°C) | 64°F(18°C) | 3.9 in(98 mm) | 69% | 5.8 |
| AugAugust | 83°F(28°C) | 64°F(18°C) | 3.8 in(96 mm) | 72% | 5.1 |
| SepSeptemberBest | 76°F(24°C) | 56°F(13°C) | 4.1 in(104 mm) | 74% | 4.0 |
| OctOctober | 65°F(18°C) | 45°F(7°C) | 4.5 in(114 mm) | 76% | 2.8 |
| NovNovember | 54°F(12°C) | 36°F(2°C) | 3.7 in(94 mm) | 69% | 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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