Clinton, Iowa Climate by Month
Clinton, Iowa, United States
Warm summers and freezing winters, with rain spread through the year.
Clinton has warm summers and freezing winters, with rain spread through the year. Afternoon highs range from 30°F (-1°C) in January to 85°F (29°C) in July, and January nights average 13°F (-10°C). About 37 in (950 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 13°F(-10°C)
- Average low, January
- Rain per year
- 37 in(950 mm)
- No clear rainy season
- Humidity
- 71%
- Sunniest: July
Best and worst months in Clinton
Best for weatherThe most comfortable weather comes in September, with highs around 76°F (25°C) and about 3.3 in (84 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 30°F (-1°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)
Clinton weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 30°F(-1°C) | 13°F(-10°C) | 1.6 in(40 mm) | 75% | 1.5 |
| FebFebruary | 35°F(1°C) | 17°F(-8°C) | 1.7 in(43 mm) | 84% | 2.6 |
| MarMarch | 48°F(9°C) | 29°F(-2°C) | 2.4 in(61 mm) | 64% | 3.8 |
| AprApril | 61°F(16°C) | 39°F(4°C) | 3.8 in(97 mm) | 65% | 4.5 |
| MayMay | 72°F(22°C) | 50°F(10°C) | 4.4 in(113 mm) | 65% | 5.3 |
| JunJune | 81°F(27°C) | 60°F(16°C) | 5.5 in(139 mm) | 70% | 5.9 |
| JulJuly | 85°F(29°C) | 64°F(18°C) | 3.7 in(94 mm) | 73% | 6.0 |
| AugAugust | 83°F(28°C) | 62°F(17°C) | 4.1 in(103 mm) | 74% | 5.3 |
| SepSeptemberBest | 76°F(25°C) | 54°F(12°C) | 3.3 in(84 mm) | 67% | 4.5 |
| OctOctober | 64°F(18°C) | 42°F(5°C) | 2.6 in(67 mm) | 66% | 2.8 |
| NovNovember | 48°F(9°C) | 30°F(-1°C) | 2.3 in(58 mm) | 74% | 1.8 |
| DecDecember | 35°F(2°C) | 19°F(-7°C) | 2.0 in(51 mm) | 80% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Clinton →- 🇺🇸Cedar RapidsIowa, United States · Pop. 130k99%matchSame winter lowsSame summer highsClinton vs Cedar Rapids →
- 🇺🇸RockfordIllinois, United States · Pop. 148k99%matchSame winter lowsSame summer highsClinton vs Rockford →
- 🇺🇸DubuqueIowa, United States · Pop. 59k99%matchSame summer highsSame winter lowsClinton vs Dubuque →
- 🇺🇸Des MoinesIowa, United States · Pop. 214k99%matchSame winter lowsSame humidityClinton vs Des Moines →
- 🇺🇸AmesIowa, United States · Pop. 65k99%matchSame summer highsSame sunshineClinton vs Ames →