Average monthly snow and rainfall in Harlan (IA)
The mean monthly precipitation over the year in Harlan (Iowa), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: April, May, June, August and September.
- On average, August is the wettest month with 154 mm of precipitation.
- On average, January is the driest month with 17 mm of precipitation.
- The average amount of annual precipitation is 958 mm.
Weather Forecasts for Harlan (IA)
partly cloudy and chance of rain
broken clouds and thunder
partly cloudy and no rain