Fairfield, Ohio Climate by Month
Fairfield, Ohio, United States
Hot summers and cold winters, with rain spread through the year.
Hot summers and cold winters, with rain spread through the year: that's Fairfield's climate in short. July is the warmest month, with highs around 87°F (31°C); January is the coolest at 39°F (4°C), and nights dip to 22°F (-5°C). It gets 42 in (1076 mm) of rain a year, spread across the months.
- Warmest month
- 87°F(31°C)
- Average high, July
- Coldest nights
- 22°F(-5°C)
- Average low, January
- Rain per year
- 42 in(1076 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: July
Best and worst months in Fairfield
Best for weatherMay, September and October are the best time for weather in Fairfield: 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)
Fairfield weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 39°F(4°C) | 22°F(-5°C) | 3.0 in(75 mm) | 86% | 1.7 |
| FebFebruary | 43°F(6°C) | 24°F(-4°C) | 2.6 in(67 mm) | 77% | 2.6 |
| MarMarch | 54°F(12°C) | 33°F(0°C) | 4.1 in(103 mm) | 63% | 3.6 |
| AprApril | 66°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(120 mm) | 69% | 5.3 |
| JunJune | 84°F(29°C) | 61°F(16°C) | 4.1 in(105 mm) | 70% | 5.8 |
| JulJuly | 87°F(31°C) | 64°F(18°C) | 4.0 in(101 mm) | 69% | 6.0 |
| AugAugust | 86°F(30°C) | 63°F(17°C) | 3.2 in(82 mm) | 72% | 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(84 mm) | 73% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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