Cedar Rapids Climate by Month
Cedar Rapids, Iowa, United States
Hot summers and freezing winters, with rain spread through the year.
Cedar Rapids has hot summers and freezing winters, with rain spread through the year. Expect highs of 86°F (30°C) in July and 30°F (-1°C) in January, with the coldest nights (January) near 13°F (-11°C). About 37 in (929 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 86°F(30°C)
- Average high, July
- Coldest nights
- 13°F(-11°C)
- Average low, January
- Rain per year
- 37 in(929 mm)
- No clear rainy season
- Humidity
- 72%
- Sunniest: July
Best and worst months in Cedar Rapids
Best for weatherThe most comfortable weather comes in May and September, with highs around 75°F (24°C) and about 4.4 in (111 mm) of rain a month.
Least pleasantDecember and January 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)
Cedar Rapids weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 30°F(-1°C) | 13°F(-11°C) | 1.1 in(28 mm) | 77% | 1.5 |
| FebFebruary | 35°F(2°C) | 17°F(-9°C) | 1.2 in(30 mm) | 85% | 2.5 |
| MarMarch | 48°F(9°C) | 28°F(-2°C) | 2.1 in(54 mm) | 64% | 3.7 |
| AprApril | 62°F(17°C) | 39°F(4°C) | 3.9 in(99 mm) | 64% | 4.5 |
| MayMayBest | 73°F(23°C) | 50°F(10°C) | 4.4 in(112 mm) | 64% | 5.2 |
| JunJune | 82°F(28°C) | 60°F(16°C) | 5.6 in(141 mm) | 69% | 5.8 |
| JulJuly | 86°F(30°C) | 64°F(18°C) | 4.1 in(104 mm) | 71% | 6.0 |
| AugAugust | 84°F(29°C) | 62°F(17°C) | 3.5 in(90 mm) | 72% | 5.3 |
| SepSeptemberBest | 77°F(25°C) | 53°F(12°C) | 4.3 in(110 mm) | 66% | 4.5 |
| OctOctober | 64°F(18°C) | 42°F(5°C) | 2.8 in(70 mm) | 67% | 2.8 |
| NovNovember | 48°F(9°C) | 29°F(-2°C) | 1.9 in(49 mm) | 76% | 1.8 |
| DecDecember | 34°F(1°C) | 18°F(-8°C) | 1.7 in(42 mm) | 83% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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