Denison (IA) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in Denison (Iowa). The numbers are calculated over a 30-year period to provide a reliable average.
- A lot of rain (rainy season) falls in the months: April, May, June, July and August.
- Denison has dry periods in January and February.
- On average, August is the wettest month with 140 mm of precipitation.
- On average, January is the driest month with 16 mm of precipitation.
- The average amount of annual precipitation is 922 mm.
Current rainfall in Denison (IA)
Fri Nov 22
7°C | -5°C
W 
11 km/h
11 km/h
partly cloudy and no rain
Sat Nov 23
10°C | -4°C
SE 18 km/h
18 km/h
partly cloudy and no rain
Sun Nov 24
12°C | 2°C
NW 14 km/h
14 km/h
overcast and no rain
