Jamestown, New York Climate by Month
Jamestown, New York, United States
Warm summers and freezing winters, with rain spread through the year.
The climate in Jamestown is one of warm summers and freezing winters, with rain spread through the year. Expect highs of 81°F (27°C) in July and 31°F (0°C) in January, with the coldest nights (February) near 16°F (-9°C). About 46 in (1157 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 81°F(27°C)
- Average high, July
- Coldest nights
- 16°F(-9°C)
- Average low, February
- Rain per year
- 46 in(1157 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: July
Best and worst months in Jamestown
Best for weatherThe most comfortable weather comes in June, August and September, with highs around 76°F (25°C) and about 4.3 in (109 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 31°F (0°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)
Jamestown weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 31°F(0°C) | 17°F(-9°C) | 3.1 in(80 mm) | 91% | 1.4 |
| FebFebruary | 34°F(1°C) | 16°F(-9°C) | 2.5 in(64 mm) | 87% | 2.3 |
| MarMarch | 44°F(6°C) | 24°F(-4°C) | 2.9 in(74 mm) | 76% | 3.3 |
| AprApril | 56°F(14°C) | 35°F(2°C) | 3.9 in(98 mm) | 67% | 4.4 |
| MayMay | 69°F(20°C) | 46°F(8°C) | 3.9 in(99 mm) | 69% | 5.3 |
| JunJuneBest | 77°F(25°C) | 55°F(13°C) | 4.6 in(118 mm) | 73% | 5.7 |
| JulJuly | 81°F(27°C) | 59°F(15°C) | 4.4 in(112 mm) | 73% | 5.8 |
| AugAugustBest | 79°F(26°C) | 58°F(14°C) | 4.2 in(107 mm) | 76% | 5.1 |
| SepSeptemberBest | 73°F(23°C) | 51°F(11°C) | 4.1 in(103 mm) | 74% | 4.1 |
| OctOctober | 60°F(16°C) | 41°F(5°C) | 4.2 in(106 mm) | 72% | 2.5 |
| NovNovember | 47°F(9°C) | 31°F(0°C) | 3.9 in(100 mm) | 74% | 1.6 |
| DecDecember | 36°F(2°C) | 23°F(-5°C) | 3.8 in(96 mm) | 72% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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