Cedar Rapids climate — normals and trends
Cedar Rapids (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.2 °C and it receives 932 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (23.2 °C on average) and the coldest is January (-7.3 °C). Rainfall peaks in June.
Cedar Rapids averages 130 frost days, 26 hot days (≥ 30 °C) and 108 rainy days per year.
Cedar Rapids has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 139 to 121 per year over the period.
The hottest day of the period reached 38.4 °C (on 25 July 2012) and the coldest -35.0 °C (on 16 January 2009).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Cedar RapidsIowa
- coords
- 42.01°, -91.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.2°C
Average daily high
14.1°C
Average daily low
4.4°C
Annual rainfall
932mm
Sunshine / day
8.8h
Mean relative humidity
71%
Average peak wind
21.5km/h
Seasonal range
30.5°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
26 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
70.7 cm
Average feels-like high
11.9 °C
Average feels-like low
1.2 °C
Average peak gust
39.4 km/h
Tropical nights (≥ 20 °C)
25 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.29 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.4 °C
25 July 2012
Coldest day
-35.0 °C
16 January 2009
Wettest day
134 mm
18 June 1946
Windiest day
66.7 km/h
15 March 1959
Strongest gust
109.1 km/h
15 December 2021
Hottest feels-like
45.2 °C
6 July 1948
Coldest feels-like
-41.1 °C
2 February 1996
Snowiest day
31.6 cm
5 March 1959
Sunniest day
14.7 h
19 June 2021
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.2 °C | +1.8 °C | 12 mm | -26 mm |
| Feb | -0.7 °C | -0.3 °C | 13 mm | -24 mm |
| Mar | 13.3 °C | +6.5 °C | 98 mm | +26 mm |
| Apr | 16.5 °C | +1.5 °C | 131 mm | +28 mm |
| May | 22.0 °C | +0.8 °C | 80 mm | -37 mm |
| Jun | 27.9 °C | +1.6 °C | 134 mm | +16 mm |
| Jul | 28.3 °C | +0.2 °C | 214 mm | +119 mm |
| Aug | 26.5 °C | -0.7 °C | 69 mm | -27 mm |
| Sep | 26.3 °C | +2.9 °C | 37 mm | -51 mm |
| Oct | 19.7 °C | +2.7 °C | 55 mm | -15 mm |
| Nov | 9.4 °C | +1.5 °C | 45 mm | -12 mm |
| Dec | -0.7 °C | -0.9 °C | 37 mm | -6 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Cedar Rapids?
Cedar Rapids has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.2 °C and it receives 932 mm of precipitation per year.
What is the hottest day ever recorded in Cedar Rapids?
The hottest day measured in Cedar Rapids between 1940 and 2025 was 25 July 2012, reaching 38.4 °C.
What is the coldest day in Cedar Rapids?
The coldest day measured in Cedar Rapids between 1940 and 2025 was 16 January 2009, at -35.0 °C.
Does it snow in Cedar Rapids?
Yes. Cedar Rapids gets on average 70.7 cm of snow per year and has around 130 frost days.
Has the climate of Cedar Rapids warmed?
Yes: Cedar Rapids warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cedar Rapids?
The wettest day measured in Cedar Rapids between 1940 and 2025 was 18 June 1946, with 134 mm of rain in 24 hours.
What was the windiest day in Cedar Rapids?
The windiest day measured in Cedar Rapids between 1940 and 2025 was 15 March 1959, with winds reaching 66.7 km/h.
What is the warmest month in Cedar Rapids?
The warmest month in Cedar Rapids is July (23.2 °C on average); the coldest is January (-7.3 °C).
How much does it rain in Cedar Rapids?
Cedar Rapids receives on average 932 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Cedar Rapids?
Cedar Rapids gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Cedar Rapids?
The heaviest 24-hour snowfall measured in Cedar Rapids between 1940 and 2025 was 5 March 1959, with 31.6 cm.
Are there tropical nights in Cedar Rapids?
Yes: Cedar Rapids has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cedar Rapids?
In Cedar Rapids, between 1940 and 2025, the highest apparent temperature reached 45.2 °C on 6 July 1948, and the lowest was -41.1 °C on 2 February 1996.
Compare Cedar Rapids with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cedar Rapids