Donnellson, IA
Climate overview — based on NOAA 1991-2020 normals from DONNELLSON, IA US.
Year-round temperatures (°F)
Climate summary
Donnellson has an annual average temperature of 51.7°F with about 39.2 inches of precipitation per year and 26.6 inches of snow. The warmest month is July (average high 86.4°F), and the coldest is January (average low 15.3°F). May is typically the wettest month (5.01 in) and January the driest (1.48 in). Snow typically falls from October through April.
Best time to visit Donnellson
Full guide →Climate change signal
All-time records →201 of 366 (54.9%) of Donnellson's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1930s | 0 | |
| 1940s | 0 | |
| 1950s | 0 | |
| 1960s | 0 | |
| 1970s | 0 | |
| 1980s | 0 | |
| 1990s | 0 | |
| 2000s | 54 | |
| 2010s | 203 | |
| 2020s | 109 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 32.8°F | 15.3°F | 24.0°F | 1.48 in | 7.3 in | 8 |
| February | 37.9°F | 18.9°F | 28.4°F | 1.89 in | 7.4 in | 7 |
| March | 50.5°F | 29.4°F | 40.0°F | 2.56 in | 3.0 in | 9 |
| April | 63.3°F | 40.0°F | 51.7°F | 3.72 in | 0.7 in | 10 |
| May | 73.2°F | 52.1°F | 62.6°F | 5.01 in | — | 12 |
| June | 83.1°F | 61.8°F | 72.4°F | 4.98 in | — | 10 |
| July | 86.4°F | 65.3°F | 75.8°F | 4.24 in | — | 9 |
| August | 85.2°F | 63.3°F | 74.2°F | 3.88 in | — | 8 |
| September | 78.6°F | 54.3°F | 66.4°F | 3.92 in | — | 7 |
| October | 65.4°F | 43.0°F | 54.2°F | 3.09 in | 0.3 in | 8 |
| November | 50.6°F | 31.0°F | 40.8°F | 2.50 in | 1.5 in | 8 |
| December | 37.7°F | 20.9°F | 29.3°F | 1.96 in | 6.4 in | 8 |
Climate twins of Donnellson
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).