The bar chart below shows the average monthly peak daytime temperatures at Marshalltown
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | -3.3 | -0.2 | 6.9 | 15.3 | 22 | 27.2 | 29.5 | 28 | 23.6 | 17.2 | 7.9 | -0.8 |
°F | 26.1 | 31.6 | 44.4 | 59.5 | 71.6 | 81 | 85.1 | 82.4 | 74.4 | 63 | 46.3 | 30.6 |
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 | 22 | 27 | 57 | 81 | 99 | 119 | 105 | 118 | 94 | 64 | 44 | 32 |
inches | 0.9 | 1.1 | 2.2 | 3.2 | 3.9 | 4.7 | 4.1 | 4.6 | 3.7 | 2.5 | 1.7 | 1.3 |
Rainy days | 8 | 7 | 10 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 9 |
Average annual rainfall in Marshalltown: 811.066mm (319.3 inches)
The bar chart below shows the average daily sunshine hours in Marshalltown
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 5.7 | 6.7 | 7.3 | 8.2 | 9.6 | 10.9 | 11.3 | 10.1 | 8.4 | 7.2 | 4.9 | 4.6 |
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 | -13.8 | -11.3 | -4 | 2.8 | 9.1 | 14.5 | 17 | 15.3 | 10.3 | 3.9 | -2.8 | -10.5 |
Max °C | -3 | 0.1 | 7.2 | 15.6 | 22.3 | 27.6 | 29.8 | 28.3 | 23.9 | 17.6 | 8.2 | -0.6 |
Min °F | 7.2 | 11.8 | 24.9 | 37 | 48.4 | 58 | 62.6 | 59.5 | 50.5 | 38.9 | 27 | 13.2 |
Max °F | 16.9 | 21.9 | 34.9 | 48.6 | 60.3 | 69.8 | 74.1 | 71.2 | 62.8 | 51.3 | 36.9 | 22.1 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 8.2 | 7.9 | 8.4 | 9.6 | 11.3 | 13.6 | 16.3 | 19.3 | 18.2 | 14.6 | 11.4 | 9.4 |
°F | 46.8 | 46.3 | 47.2 | 49.2 | 52.4 | 56.4 | 61.3 | 66.8 | 64.8 | 58.2 | 52.6 | 48.9 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 20 | 19 | 22 | 22 | 19 | 17 | 15 | 15 | 16 | 18 | 19 | 19 |
mph | 12 | 12 | 14 | 14 | 12 | 11 | 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 |
---|---|---|---|---|---|---|---|---|---|---|---|
72% | 73% | 71% | 65% | 65% | 67% | 70% | 72% | 73% | 69% | 73% | 76% |
Hottest month: | July | 29.5°C 85.1°F |
---|---|---|
Driest month: | January | 22mm 0.9ins |
Sunniest month: | July | 11.3hrs |
Coldest month: | January | -3.3°C 26.1°F |
Wettest month: | June | 119mm 4.7ins |
Warmest sea: | August | 19.3°C 66.7°F |