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Avoca, Iowa climate
Dfa Hot-summer humid continental
Avoca has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 88°F, while the coldest is January averaging around 15°F at night. Precipitation totals about 32 inches a year and is strongly seasonal — May alone averages 4.7 inches while January barely receives 0.75 inches. Winters bring significant snowfall (27 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 countsAvoca climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 34 | 39 | 52 | 64 | 75 | 84 | 88 | 86 | 79 | 66 | 50 | 38 |
| Avg temp (°F) | 24 | 29 | 41 | 53 | 64 | 74 | 78 | 76 | 68 | 54 | 40 | 29 |
| Avg low (°F) | 15 | 19 | 30 | 41 | 53 | 63 | 68 | 66 | 56 | 43 | 30 | 20 |
| Precipitation (in) | 0.8 | 1.0 | 1.8 | 3.2 | 4.7 | 4.4 | 3.6 | 4.6 | 3.0 | 2.3 | 1.5 | 1.2 |
| Snowfall (in) | 7.2 | 7.8 | 3.0 | 1.0 | 0.1 | — | — | — | — | 0.5 | 1.7 | 5.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 34 | 39 | 52 | 64 | 75 | 84 |
| Avg temp (°F) | 24 | 29 | 41 | 53 | 64 | 74 |
| Avg low (°F) | 15 | 19 | 30 | 41 | 53 | 63 |
| Precipitation (in) | 0.8 | 1.0 | 1.8 | 3.2 | 4.7 | 4.4 |
| Snowfall (in) | 7.2 | 7.8 | 3.0 | 1.0 | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 86 | 79 | 66 | 50 | 38 |
| Avg temp (°F) | 78 | 76 | 68 | 54 | 40 | 29 |
| Avg low (°F) | 68 | 66 | 56 | 43 | 30 | 20 |
| Precipitation (in) | 3.6 | 4.6 | 3.0 | 2.3 | 1.5 | 1.2 |
| Snowfall (in) | — | — | — | 0.5 | 1.7 | 5.8 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 7 | 8 | 10 | 13 | 11 | 10 | 9 | 8 | 7 | 6 | 7 |
| Days with high ≥ 90°F (days) | — | — | 0.0 | 0.3 | 2 | 7 | 12 | 8 | 4 | 0.3 | — | — |
| Days with low ≤ 32°F (days) | 29 | 25 | 20 | 6 | 0.3 | — | — | — | 0.1 | 4 | 19 | 28 |
| Days with snowfall ≥ 1 in (days) | 2 | 2 | 0.7 | 0.3 | 0.1 | — | — | — | — | 0.2 | 0.6 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 7 | 8 | 10 | 13 | 11 |
| Days with high ≥ 90°F (days) | — | — | 0.0 | 0.3 | 2 | 7 |
| Days with low ≤ 32°F (days) | 29 | 25 | 20 | 6 | 0.3 | — |
| Days with snowfall ≥ 1 in (days) | 2 | 2 | 0.7 | 0.3 | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 9 | 8 | 7 | 6 | 7 |
| Days with high ≥ 90°F (days) | 12 | 8 | 4 | 0.3 | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.1 | 4 | 19 | 28 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.2 | 0.6 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 65 | 65 | 64 | 56 | 48 | 50 | 46 | 55 | 58 | 61 |
| Clear days (≤ 30% cloud) | 5 | 4 | 5 | 6 | 5 | 7 | 9 | 10 | 11 | 9 | 7 | 6 |
| Partly cloudy days (30–70%) | 11 | 10 | 10 | 8 | 10 | 11 | 13 | 12 | 10 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 15 | 14 | 16 | 16 | 16 | 11 | 9 | 9 | 9 | 12 | 13 | 14 |
| Relative humidity (%) | 83 | 79 | 74 | 69 | 71 | 73 | 70 | 68 | 67 | 70 | 76 | 83 |
| Wind speed (mph) | 8.3 | 8.5 | 8.9 | 9.3 | 8.0 | 6.8 | 5.7 | 5.6 | 6.8 | 7.5 | 7.9 | 7.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 65 | 65 | 64 | 56 |
| Clear days (≤ 30% cloud) | 5 | 4 | 5 | 6 | 5 | 7 |
| Partly cloudy days (30–70%) | 11 | 10 | 10 | 8 | 10 | 11 |
| Cloudy days (≥ 70%) | 15 | 14 | 16 | 16 | 16 | 11 |
| Relative humidity (%) | 83 | 79 | 74 | 69 | 71 | 73 |
| Wind speed (mph) | 8.3 | 8.5 | 8.9 | 9.3 | 8.0 | 6.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 48 | 50 | 46 | 55 | 58 | 61 |
| Clear days (≤ 30% cloud) | 9 | 10 | 11 | 9 | 7 | 6 |
| Partly cloudy days (30–70%) | 13 | 12 | 10 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 9 | 9 | 9 | 12 | 13 | 14 |
| Relative humidity (%) | 70 | 68 | 67 | 70 | 76 | 83 |
| Wind speed (mph) | 5.7 | 5.6 | 6.8 | 7.5 | 7.9 | 7.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Omaha Eppley Airfield (NOAA GHCN station USW00014942), about 50 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.