The bar chart below shows the average monthly peak daytime temperatures at Ottumwa
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | -1.5 | 1.4 | 8.6 | 16.7 | 22.7 | 27.9 | 30 | 28.5 | 24.2 | 17.9 | 9.3 | 1 |
°F | 29.2 | 34.5 | 47.6 | 62 | 72.9 | 82.3 | 86.1 | 83.3 | 75.6 | 64.2 | 48.7 | 33.8 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
The graph below shows the average rainfall and number of rainy days per month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 27 | 25 | 63 | 89 | 100 | 106 | 112 | 105 | 98 | 61 | 51 | 35 |
inches | 1.1 | 1 | 2.5 | 3.5 | 3.9 | 4.2 | 4.4 | 4.1 | 3.9 | 2.4 | 2 | 1.4 |
Rainy days | 8 | 8 | 10 | 11 | 12 | 10 | 9 | 9 | 9 | 8 | 8 | 9 |
Average annual rainfall in Ottumwa: 820.666mm (323.1 inches)
The bar chart below shows the average daily sunshine hours in Ottumwa
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 5.7 | 6.5 | 7 | 8.1 | 9.5 | 10.8 | 11.1 | 10.1 | 8.4 | 7.3 | 5.1 | 4.7 |
The graph below shows the daily range of temperatures for each month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Min °C | -11.1 | -8.7 | -1.9 | 5.1 | 11 | 16.4 | 18.9 | 17.3 | 12.7 | 6.3 | -0.3 | -7.6 |
Max °C | -1.3 | 1.7 | 8.9 | 17 | 23 | 28.2 | 30.3 | 28.8 | 24.5 | 18.2 | 9.5 | 1.2 |
Min °F | 12 | 16.4 | 28.6 | 41.1 | 51.8 | 61.5 | 66 | 63.1 | 54.9 | 43.3 | 31.5 | 18.3 |
Max °F | 20.8 | 25.7 | 38.3 | 51.8 | 62.6 | 72.1 | 76.3 | 73.4 | 65.5 | 54 | 40.3 | 26.2 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 8.9 | 8.6 | 9.1 | 10.3 | 12.2 | 14.5 | 17.2 | 20.1 | 18.9 | 15.3 | 12.2 | 10.1 |
°F | 48 | 47.5 | 48.4 | 50.6 | 53.9 | 58.1 | 62.9 | 68.1 | 66.1 | 59.5 | 53.9 | 50.2 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 19 | 19 | 21 | 21 | 18 | 17 | 14 | 14 | 16 | 17 | 19 | 19 |
mph | 12 | 12 | 13 | 13 | 11 | 10 | 9 | 9 | 10 | 11 | 12 | 12 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
71% | 72% | 69% | 64% | 66% | 67% | 70% | 72% | 72% | 68% | 72% | 75% |
Hottest month: | July | 30°C 86°F |
---|---|---|
Driest month: | February | 25mm 1ins |
Sunniest month: | July | 11.1hrs |
Coldest month: | January | -1.5°C 29.3°F |
Wettest month: | July | 112mm 4.4ins |
Warmest sea: | August | 20.1°C 68.2°F |