Cedar Rapids, IA Climate & Monthly Averages
The climate of Cedar Rapids
A 30°C spread between its warmest and coolest months puts Cedar Rapids among the more strongly seasonal places we cover. July averages 83°F (28°C) by day; January averages 29°F (-2°C), with nights at 14°F (-10°C).
Climate quick facts
- Hottest month: July - highs near 83°F (28°C)
- Coldest month: January - highs near 29°F (-2°C)
- Decade extremes (2015-2024): 100°F (38°C) high · -32°F (-36°C) low
- Wettest month: June (10 rainy days) · Sunniest: July (12.4 h sun/day)
- Climate type: humid continental
- Annual swing: 30°C between the average warmest and coolest month · day to night: 10°C
- Snow: about 18 days a year
- Months with freezing average lows: 4
- Average humidity: 70%
Temperatures through the year
Overnight lows average at or below freezing for 4 months, December through March. July is the warm end of the year, averaging 83°F (28°C) by day and 66°F (19°C) overnight. January sits at the other end of the year: 29°F (-2°C) by day, 14°F (-10°C) at night. Sunshine averages 8.8 hours a day over the year, peaking in July at 12.4 hours.
Rain, sun and snow
Precipitation concentrates in June - 4.7 inches (118 mm) on 10 days - and thins out by February. Snow falls on roughly 18 days a year, mostly October through April. Between the average July and the average January lie 30°C, a wider spread than 96% of the 3496 cities in our dataset. The gridded 2015-2024 daily record for this location tops out at 100°F (38°C) and bottoms at -32°F (-36°C) - decade extremes, not all-time station records.
How Cedar Rapids compares
- Cedar Rapids sits close to the middle of our dataset on most measures: 50°F (10°C) as an annual average, 38.3 inches (972 mm) of precipitation and 8.8 hours of sun a day.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 29° | 14° | 8 | 1.9 in | 5.6 h/day | 77% |
| February | 33° | 15° | 6 | 1.5 in | 7.5 h/day | 71% |
| March | 48° | 30° | 9 | 2.8 in | 7.9 h/day | 67% |
| April | 59° | 39° | 11 | 3.8 in | 8.8 h/day | 64% |
| May | 71° | 52° | 12 | 4.5 in | 10.0 h/day | 69% |
| June | 81° | 63° | 10 | 4.7 in | 12.0 h/day | 68% |
| July | 83° | 66° | 10 | 3.3 in | 12.4 h/day | 75% |
| August | 81° | 64° | 10 | 3.6 in | 11.4 h/day | 74% |
| September | 77° | 59° | 9 | 3.6 in | 10.0 h/day | 71% |
| October | 62° | 46° | 10 | 3.7 in | 7.6 h/day | 67% |
| November | 48° | 32° | 7 | 2.7 in | 6.7 h/day | 70% |
| December | 37° | 23° | 7 | 2.2 in | 5.4 h/day | 72% |
Cedar Rapids month by month
Cedar Rapids weather in January
January brings highs around 29°F (-2°C), lows near 14°F (-10°C), about 8 wet days and roughly 6 snowy days - typically the coldest month of the year in Cedar Rapids.
Cedar Rapids weather in February
February brings highs around 33°F (1°C), lows near 15°F (-9°C), about 6 wet days and roughly 3 snowy days - typically the driest month of the year in Cedar Rapids.
Cedar Rapids weather in March
March brings highs around 48°F (9°C), lows near 30°F (-1°C), about 9 wet days and roughly 2 snowy days.
Cedar Rapids weather in April
April brings highs around 59°F (15°C), lows near 39°F (4°C), about 11 wet days and roughly 1 snowy days.
Cedar Rapids weather in May
May brings highs around 71°F (22°C), lows near 52°F (11°C), about 12 wet days.
Cedar Rapids weather in June
June brings highs around 81°F (27°C), lows near 63°F (17°C), about 10 wet days - typically the wettest month of the year in Cedar Rapids.
Cedar Rapids weather in July
July brings highs around 83°F (28°C), lows near 66°F (19°C), about 10 wet days - typically the hottest month and the sunniest month of the year in Cedar Rapids.
Cedar Rapids weather in August
August brings highs around 81°F (27°C), lows near 64°F (18°C), about 10 wet days.
Cedar Rapids weather in September
September brings highs around 77°F (25°C), lows near 59°F (15°C), about 9 wet days.
Cedar Rapids weather in October
October brings highs around 62°F (17°C), lows near 46°F (8°C), about 10 wet days.
Cedar Rapids weather in November
November brings highs around 48°F (9°C), lows near 32°F (0°C), about 7 wet days and roughly 1 snowy days.
Cedar Rapids weather in December
December brings highs around 37°F (3°C), lows near 23°F (-5°C), about 7 wet days and roughly 3 snowy days.
Seasons in Cedar Rapids
Spring (March through May)
Spring in Cedar Rapids stays on the cool side of mild, with daytime highs averaging 59°F (15°C) and nights around 40°F (5°C); rain falls on around 33 of the 90 days, plus about 4 snowy days.
Summer (June through August)
Summer in Cedar Rapids brings hot afternoons, with daytime highs averaging 82°F (28°C) and nights around 64°F (18°C); rain falls on around 30 of the 90 days. Daylight is generous - around 11.9 hours of sun a day.
Fall (September through November)
Through fall, Cedar Rapids is crisp but comfortable: 62°F (17°C) by day, 46°F (8°C) after dark, and expect showers on roughly 25 days across the season.
Winter (December through February)
Winter in Cedar Rapids runs to hard cold, with daytime highs averaging 33°F (1°C) and nights around 17°F (-8°C); expect showers on roughly 22 days across the season, plus about 12 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Climate questions, answered
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Is Cedar Rapids cold in winter?
How hot does Cedar Rapids get in summer?
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When does Cedar Rapids drop below freezing?
Best time to visit Cedar Rapids
Aim for June to October if you get the choice: these are the warmest and brightest weeks of the year, and highs average 77°F (25°C) against roughly 10 wet days a month. For the same question asked the other way round, see where else is warm in June.
Pack for Cedar Rapids with light clothing for the warm months, a heavy insulated coat, hat and gloves for winter and a compact umbrella or rain shell. Even in July, lows of 66°F (19°C) make an extra layer worth the space.
Cedar Rapids temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.