Casey, IA
Climate overview — based on NOAA 1991-2020 normals from GUTHRIE CTR, IA US.
Year-round temperatures (°F)
Climate summary
Casey has an annual average temperature of 48.4°F with about 37.1 inches of precipitation per year. The warmest month is July (average high 85.1°F), and the coldest is January (average low 9.6°F). May is typically the wettest month (5.30 in) and January the driest (0.89 in).
Best time to visit Casey
Full guide →Climate change signal
All-time records →30 of 366 (8.2%) of Casey'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.
| 1890s | 6 | |
| 1900s | 18 | |
| 1910s | 31 | |
| 1920s | 27 | |
| 1930s | 108 | |
| 1940s | 11 | |
| 1950s | 23 | |
| 1960s | 8 | |
| 1970s | 15 | |
| 1980s | 25 | |
| 1990s | 27 | |
| 2000s | 23 | |
| 2010s | 24 | |
| 2020s | 20 |
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 | 29.7°F | 9.6°F | 19.6°F | 0.89 in | — | — |
| February | 34.6°F | 13.8°F | 24.2°F | 1.18 in | — | — |
| March | 47.5°F | 25.5°F | 36.5°F | 1.88 in | — | — |
| April | 61.0°F | 36.3°F | 48.7°F | 4.11 in | — | — |
| May | 71.8°F | 48.4°F | 60.1°F | 5.30 in | — | — |
| June | 81.7°F | 59.0°F | 70.4°F | 5.23 in | — | — |
| July | 85.1°F | 63.0°F | 74.1°F | 4.32 in | — | — |
| August | 82.7°F | 59.8°F | 71.2°F | 4.52 in | — | — |
| September | 76.6°F | 50.4°F | 63.5°F | 3.61 in | — | — |
| October | 63.6°F | 37.7°F | 50.7°F | 2.81 in | — | — |
| November | 47.7°F | 26.0°F | 36.8°F | 1.88 in | — | — |
| December | 34.9°F | 15.6°F | 25.3°F | 1.41 in | — | — |
Climate twins of Casey
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).