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Cedar Rapids, Iowa climate
Dfa Hot-summer humid continental
Cedar Rapids has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 86°F, while the coldest is January averaging around 13°F at night. Precipitation totals about 39 inches a year and is strongly seasonal — June alone averages 5.7 inches while January barely receives 1.17 inches. Winters bring significant snowfall (34 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsCedar Rapids climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 30 | 35 | 49 | 63 | 74 | 82 | 86 | 83 | 77 | 64 | 48 | 35 |
| Avg temp (°F) | 21 | 26 | 38 | 51 | 62 | 71 | 74 | 72 | 65 | 53 | 39 | 27 |
| Avg low (°F) | 13 | 17 | 28 | 38 | 50 | 60 | 63 | 61 | 53 | 42 | 29 | 19 |
| Precipitation (in) | 1.2 | 1.3 | 2.1 | 4.0 | 4.7 | 5.7 | 4.5 | 4.4 | 4.0 | 3.0 | 2.2 | 1.7 |
| Snowfall (in) | 8.7 | 8.3 | 4.0 | 1.5 | — | — | — | — | — | 0.6 | 2.2 | 9.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 30 | 35 | 49 | 63 | 74 | 82 |
| Avg temp (°F) | 21 | 26 | 38 | 51 | 62 | 71 |
| Avg low (°F) | 13 | 17 | 28 | 38 | 50 | 60 |
| Precipitation (in) | 1.2 | 1.3 | 2.1 | 4.0 | 4.7 | 5.7 |
| Snowfall (in) | 8.7 | 8.3 | 4.0 | 1.5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 83 | 77 | 64 | 48 | 35 |
| Avg temp (°F) | 74 | 72 | 65 | 53 | 39 | 27 |
| Avg low (°F) | 63 | 61 | 53 | 42 | 29 | 19 |
| Precipitation (in) | 4.5 | 4.4 | 4.0 | 3.0 | 2.2 | 1.7 |
| Snowfall (in) | — | — | — | 0.6 | 2.2 | 9.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 7 | 10 | 11 | 13 | 12 | 10 | 10 | 9 | 9 | 8 | 9 |
| Days with high ≥ 90°F (days) | — | — | — | 0.0 | 0.8 | 4 | 7 | 4 | 2 | 0.0 | — | — |
| Days with low ≤ 32°F (days) | 30 | 25 | 20 | 7 | 0.6 | — | — | — | 0.2 | 5 | 18 | 28 |
| Days with snowfall ≥ 1 in (days) | 3 | 3 | 1 | 0.5 | — | — | — | — | — | 0.1 | 0.6 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 7 | 10 | 11 | 13 | 12 |
| Days with high ≥ 90°F (days) | — | — | — | 0.0 | 0.8 | 4 |
| Days with low ≤ 32°F (days) | 30 | 25 | 20 | 7 | 0.6 | — |
| Days with snowfall ≥ 1 in (days) | 3 | 3 | 1 | 0.5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 10 | 9 | 9 | 8 | 9 |
| Days with high ≥ 90°F (days) | 7 | 4 | 2 | 0.0 | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.2 | 5 | 18 | 28 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.1 | 0.6 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 64 | 64 | 65 | 66 | 60 | 51 | 52 | 49 | 60 | 65 | 65 |
| Clear days (≤ 30% cloud) | 5 | 4 | 5 | 5 | 5 | 6 | 8 | 9 | 11 | 8 | 5 | 5 |
| Partly cloudy days (30–70%) | 11 | 10 | 10 | 9 | 10 | 10 | 13 | 12 | 9 | 8 | 10 | 10 |
| Cloudy days (≥ 70%) | 15 | 14 | 16 | 16 | 16 | 13 | 10 | 10 | 10 | 15 | 15 | 16 |
| Relative humidity (%) | 87 | 83 | 78 | 74 | 75 | 76 | 75 | 73 | 71 | 74 | 80 | 87 |
| Wind speed (mph) | 8.5 | 8.6 | 8.7 | 8.7 | 7.3 | 6.0 | 5.2 | 5.1 | 6.0 | 7.1 | 7.6 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 64 | 64 | 65 | 66 | 60 |
| Clear days (≤ 30% cloud) | 5 | 4 | 5 | 5 | 5 | 6 |
| Partly cloudy days (30–70%) | 11 | 10 | 10 | 9 | 10 | 10 |
| Cloudy days (≥ 70%) | 15 | 14 | 16 | 16 | 16 | 13 |
| Relative humidity (%) | 87 | 83 | 78 | 74 | 75 | 76 |
| Wind speed (mph) | 8.5 | 8.6 | 8.7 | 8.7 | 7.3 | 6.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 51 | 52 | 49 | 60 | 65 | 65 |
| Clear days (≤ 30% cloud) | 8 | 9 | 11 | 8 | 5 | 5 |
| Partly cloudy days (30–70%) | 13 | 12 | 9 | 8 | 10 | 10 |
| Cloudy days (≥ 70%) | 10 | 10 | 10 | 15 | 15 | 16 |
| Relative humidity (%) | 75 | 73 | 71 | 74 | 80 | 87 |
| Wind speed (mph) | 5.2 | 5.1 | 6.0 | 7.1 | 7.6 | 7.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Cedar Rapids #1 (NOAA GHCN station USC00131319), about 7 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.