Hamilton, Ohio Climate by Month
Hamilton, Ohio, United States
Hot summers and cold winters, with rain spread through the year.
The climate in Hamilton is one of hot summers and cold winters, with rain spread through the year. Afternoon highs range from 39°F (4°C) in January to 87°F (31°C) in July, and January nights average 22°F (-6°C). About 42 in (1069 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 87°F(31°C)
- Average high, July
- Coldest nights
- 22°F(-6°C)
- Average low, January
- Rain per year
- 42 in(1069 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: July
Best and worst months in Hamilton
Best for weatherMay, September and October are the best time for weather in Hamilton: highs near 75°F (24°C) and about 3.5 in (90 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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hamilton weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 39°F(4°C) | 22°F(-6°C) | 2.9 in(74 mm) | 87% | 1.6 |
| FebFebruary | 43°F(6°C) | 24°F(-4°C) | 2.6 in(66 mm) | 76% | 2.6 |
| MarMarch | 54°F(12°C) | 33°F(0°C) | 4.0 in(102 mm) | 63% | 3.6 |
| AprApril | 67°F(19°C) | 42°F(6°C) | 4.3 in(109 mm) | 63% | 4.6 |
| MayMayBest | 76°F(25°C) | 52°F(11°C) | 4.7 in(119 mm) | 68% | 5.3 |
| JunJune | 84°F(29°C) | 61°F(16°C) | 4.1 in(104 mm) | 70% | 5.8 |
| JulJuly | 87°F(31°C) | 64°F(18°C) | 3.9 in(100 mm) | 69% | 5.9 |
| AugAugust | 86°F(30°C) | 63°F(17°C) | 3.2 in(82 mm) | 71% | 5.4 |
| SepSeptemberBest | 80°F(27°C) | 56°F(13°C) | 2.9 in(74 mm) | 68% | 4.5 |
| OctOctoberBest | 69°F(20°C) | 44°F(7°C) | 3.0 in(76 mm) | 65% | 3.1 |
| NovNovember | 55°F(13°C) | 34°F(1°C) | 3.1 in(80 mm) | 70% | 2.0 |
| DecDecember | 43°F(6°C) | 26°F(-3°C) | 3.3 in(83 mm) | 74% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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