Marshalltown Climate: Weather by Month and Best Time to Visit
Best months for Marshalltown: September, August, July.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -2°C | -10°C | 32 mm | 7 | – | – | 4.2 |
| February | 1°C | -8°C | 38 mm | 7 | – | – | 4.2 |
| March | 9°C | -2°C | 64 mm | 9 | – | – | 5.5 |
| April | 16°C | 5°C | 113 mm | 11 | – | – | 6.5 |
| May | 22°C | 11°C | 135 mm | 14 | – | – | 7.0 |
| June | 27°C | 17°C | 131 mm | 12 | – | – | 7.3 |
| July | 29°C | 19°C | 99 mm | 10 | – | – | 7.7 |
| August | 27°C | 17°C | 99 mm | 9 | – | – | 7.8 |
| September | 24°C | 13°C | 95 mm | 8 | – | – | 7.9 |
| October | 17°C | 6°C | 73 mm | 8 | – | – | 7.2 |
| November | 9°C | -1°C | 54 mm | 7 | – | – | 5.8 |
| December | 1°C | -7°C | 40 mm | 6 | – | – | 4.3 |