Average monthly snow and rainfall in Oswego (IL)
The mean monthly precipitation over the year in Oswego (Illinois), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: April, May, June, July and August.
- On average, June is the wettest month with 130 mm of precipitation.
- On average, January is the driest month with 47 mm of precipitation.
- The average amount of annual precipitation is 1029 mm.
Weather Forecasts for Oswego (IL)
almost clear and no rain
partly cloudy and no rain
partly cloudy and no rain