Annawan, IL
Climate overview — based on NOAA 1991-2020 normals from KEWANEE 1 E, IL US.
Year-round temperatures (°F)
Climate summary
Annawan has an annual average temperature of 49.6°F with about 39.6 inches of precipitation per year and 30.8 inches of snow. The warmest month is July (average high 83.7°F), and the coldest is January (average low 13.8°F). May is typically the wettest month (5.07 in) and January the driest (1.89 in). Snow typically falls from October through April.
Best time to visit Annawan
Full guide →Climate change signal
All-time records →41 of 366 (11.2%) of Annawan'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 | 8 | |
| 1940s | 59 | |
| 1950s | 72 | |
| 1960s | 48 | |
| 1970s | 31 | |
| 1980s | 43 | |
| 1990s | 19 | |
| 2000s | 32 | |
| 2010s | 31 | |
| 2020s | 23 |
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 | 30.3°F | 13.8°F | 22.1°F | 1.89 in | 8.7 in | 9 |
| February | 34.8°F | 17.4°F | 26.1°F | 2.06 in | 8.5 in | 9 |
| March | 47.7°F | 27.4°F | 37.5°F | 2.62 in | 3.2 in | 10 |
| April | 60.9°F | 37.7°F | 49.3°F | 3.96 in | 1.2 in | 12 |
| May | 72.0°F | 50.2°F | 61.1°F | 5.07 in | — | 14 |
| June | 80.9°F | 60.2°F | 70.5°F | 5.00 in | — | 12 |
| July | 83.7°F | 63.4°F | 73.6°F | 3.69 in | — | 10 |
| August | 82.2°F | 60.7°F | 71.4°F | 3.86 in | — | 10 |
| September | 76.5°F | 51.9°F | 64.2°F | 3.68 in | — | 8 |
| October | 63.8°F | 41.0°F | 52.4°F | 2.93 in | 0.3 in | 11 |
| November | 48.5°F | 29.7°F | 39.1°F | 2.65 in | 1.4 in | 10 |
| December | 35.8°F | 19.7°F | 27.8°F | 2.17 in | 7.5 in | 9 |
Climate twins of Annawan
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).