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Davenport, Iowa climate
Dfa Hot-summer humid continental
Davenport has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 29°C, while the coldest is January averaging around −10°C at night. Around 986 mm of precipitation falls each year, peaking in June (133 mm) and easing off in January (38 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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 countsDavenport climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 2 | 9 | 16 | 22 | 27 | 29 | 28 | 25 | 18 | 9 | 2 |
| Avg temp (°C) | −5 | −3 | 3 | 10 | 16 | 22 | 24 | 23 | 19 | 12 | 4 | −2 |
| Avg low (°C) | −10 | −8 | −2 | 4 | 10 | 16 | 18 | 17 | 13 | 6 | −1 | −7 |
| Precipitation (mm) | 38 | 45 | 67 | 97 | 130 | 133 | 107 | 102 | 84 | 73 | 58 | 51 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 2 | 9 | 16 | 22 | 27 |
| Avg temp (°C) | −5 | −3 | 3 | 10 | 16 | 22 |
| Avg low (°C) | −10 | −8 | −2 | 4 | 10 | 16 |
| Precipitation (mm) | 38 | 45 | 67 | 97 | 130 | 133 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 28 | 25 | 18 | 9 | 2 |
| Avg temp (°C) | 24 | 23 | 19 | 12 | 4 | −2 |
| Avg low (°C) | 18 | 17 | 13 | 6 | −1 | −7 |
| Precipitation (mm) | 107 | 102 | 84 | 73 | 58 | 51 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 9 | 10 | 12 | 13 | 12 | 9 | 10 | 8 | 9 | 10 | 10 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.9 | 4 | 7 | 4 | 2 | 0.1 | — | — |
| Days with low ≤ 0°C (days) | 28 | 25 | 17 | 4 | 0.1 | — | — | — | 0.0 | 2 | 14 | 25 |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 1 | 0.5 | 0.1 | — | — | — | — | — | 0.0 | 0.3 | 0.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 9 | 10 | 12 | 13 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.9 | 4 |
| Days with low ≤ 0°C (days) | 28 | 25 | 17 | 4 | 0.1 | — |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 1 | 0.5 | 0.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 10 | 8 | 9 | 10 | 10 |
| Days with high ≥ 32°C (days) | 7 | 4 | 2 | 0.1 | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.0 | 2 | 14 | 25 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.0 | 0.3 | 0.8 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 66 | 65 | 65 | 65 | 58 | 51 | 50 | 48 | 58 | 65 | 67 |
| Clear days (≤ 30% cloud) | 4 | 4 | 5 | 6 | 5 | 7 | 9 | 10 | 11 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 11 | 10 | 11 | 9 | 9 | 10 | 13 | 12 | 10 | 9 | 10 | 10 |
| Cloudy days (≥ 70%) | 16 | 15 | 16 | 16 | 16 | 12 | 9 | 9 | 9 | 14 | 15 | 16 |
| Relative humidity (%) | 86 | 83 | 77 | 74 | 75 | 76 | 73 | 71 | 71 | 73 | 79 | 86 |
| Wind speed (km/h) | 13.5 | 13.5 | 13.8 | 13.9 | 11.6 | 9.5 | 8.3 | 8.1 | 9.4 | 11.2 | 12.3 | 12.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 66 | 65 | 65 | 65 | 58 |
| Clear days (≤ 30% cloud) | 4 | 4 | 5 | 6 | 5 | 7 |
| Partly cloudy days (30–70%) | 11 | 10 | 11 | 9 | 9 | 10 |
| Cloudy days (≥ 70%) | 16 | 15 | 16 | 16 | 16 | 12 |
| Relative humidity (%) | 86 | 83 | 77 | 74 | 75 | 76 |
| Wind speed (km/h) | 13.5 | 13.5 | 13.8 | 13.9 | 11.6 | 9.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 51 | 50 | 48 | 58 | 65 | 67 |
| Clear days (≤ 30% cloud) | 9 | 10 | 11 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 13 | 12 | 10 | 9 | 10 | 10 |
| Cloudy days (≥ 70%) | 9 | 9 | 9 | 14 | 15 | 16 |
| Relative humidity (%) | 73 | 71 | 71 | 73 | 79 | 86 |
| Wind speed (km/h) | 8.3 | 8.1 | 9.4 | 11.2 | 12.3 | 12.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Rock IS L&d 15 (NOAA GHCN station USC00117391), about 1 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.