Ollie, IA
Climate overview — based on NOAA 1991-2020 normals from SIGOURNEY, IA US.
Year-round temperatures (°F)
Climate summary
Ollie has an annual average temperature of 48.9°F with about 37.4 inches of precipitation per year. The warmest month is July (average high 84.6°F), and the coldest is January (average low 11.5°F). June is typically the wettest month (5.11 in) and January the driest (1.18 in).
Best time to visit Ollie
Full guide →Climate change signal
All-time records →24 of 366 (6.6%) of Ollie'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 | 21 | |
| 1900s | 56 | |
| 1910s | 23 | |
| 1920s | 23 | |
| 1930s | 76 | |
| 1940s | 20 | |
| 1950s | 20 | |
| 1960s | 16 | |
| 1970s | 14 | |
| 1980s | 31 | |
| 1990s | 15 | |
| 2000s | 15 | |
| 2010s | 23 | |
| 2020s | 13 |
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 | 29.8°F | 11.5°F | 20.7°F | 1.18 in | — | 6 |
| February | 34.6°F | 15.1°F | 24.8°F | 1.47 in | — | 6 |
| March | 47.6°F | 26.3°F | 37.0°F | 2.34 in | — | 7 |
| April | 60.7°F | 37.2°F | 48.9°F | 3.70 in | — | 9 |
| May | 71.0°F | 49.1°F | 60.0°F | 4.95 in | — | 12 |
| June | 80.6°F | 59.1°F | 69.8°F | 5.11 in | — | 12 |
| July | 84.6°F | 62.7°F | 73.6°F | 3.93 in | — | 8 |
| August | 82.8°F | 60.4°F | 71.6°F | 4.76 in | — | 9 |
| September | 76.4°F | 51.7°F | 64.1°F | 3.47 in | — | 7 |
| October | 63.4°F | 39.8°F | 51.6°F | 2.78 in | — | 8 |
| November | 48.2°F | 27.7°F | 38.0°F | 2.18 in | — | 7 |
| December | 35.3°F | 17.7°F | 26.5°F | 1.54 in | — | 6 |
Climate twins of Ollie
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).