Riverdale, IA
Climate overview — based on NOAA 1991-2020 normals from LE CLAIRE L&D 14, IA US.
Year-round temperatures (°F)
Climate summary
Riverdale has an annual average temperature of 50.6°F with about 37.1 inches of precipitation per year. The warmest month is July (average high 85.0°F), and the coldest is January (average low 14.1°F). May is typically the wettest month (4.81 in) and January the driest (1.51 in).
Best time to visit Riverdale
Full guide →Climate change signal
All-time records →58 of 366 (15.8%) of Riverdale'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 | 34 | |
| 1950s | 38 | |
| 1960s | 33 | |
| 1970s | 36 | |
| 1980s | 52 | |
| 1990s | 47 | |
| 2000s | 40 | |
| 2010s | 60 | |
| 2020s | 26 |
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 | 30.5°F | 14.1°F | 22.3°F | 1.51 in | — | 9 |
| February | 34.7°F | 17.7°F | 26.2°F | 1.64 in | — | 8 |
| March | 47.1°F | 28.4°F | 37.7°F | 2.57 in | — | 10 |
| April | 60.6°F | 39.8°F | 50.2°F | 3.77 in | — | 11 |
| May | 72.0°F | 51.7°F | 61.8°F | 4.81 in | — | 12 |
| June | 81.5°F | 62.3°F | 71.9°F | 4.61 in | — | 11 |
| July | 85.0°F | 66.1°F | 75.5°F | 4.17 in | — | 8 |
| August | 83.0°F | 64.1°F | 73.6°F | 4.06 in | — | 9 |
| September | 76.6°F | 56.0°F | 66.3°F | 3.35 in | — | 8 |
| October | 63.6°F | 43.8°F | 53.7°F | 2.60 in | — | 9 |
| November | 48.4°F | 31.4°F | 39.9°F | 2.14 in | — | 8 |
| December | 35.7°F | 20.5°F | 28.1°F | 1.89 in | — | 9 |
Climate twins of Riverdale
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).