Knoxville, IL
Climate overview — based on NOAA 1991-2020 normals from KNOXVILLE, IL US.
Year-round temperatures (°F)
Climate summary
Knoxville has an annual average temperature of 50.4°F with about 40.5 inches of precipitation per year and 25.4 inches of snow. The warmest month is July (average high 83.6°F), and the coldest is January (average low 14.3°F). May is typically the wettest month (5.54 in) and January the driest (2.09 in). Snow typically falls from October through April.
Best time to visit Knoxville
Full guide →Climate change signal
All-time records →195 of 366 (53.3%) of Knoxville'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.
| 1990s | 0 | |
| 2000s | 68 | |
| 2010s | 184 | |
| 2020s | 114 |
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 | 31.6°F | 14.3°F | 23.0°F | 2.09 in | 6.4 in | 9 |
| February | 36.1°F | 18.1°F | 27.1°F | 2.12 in | 7.7 in | 9 |
| March | 48.8°F | 28.5°F | 38.6°F | 2.64 in | 3.4 in | 10 |
| April | 61.5°F | 39.4°F | 50.5°F | 3.95 in | 0.4 in | 12 |
| May | 72.0°F | 50.8°F | 61.4°F | 5.54 in | — | 14 |
| June | 81.2°F | 60.7°F | 70.9°F | 4.61 in | — | 12 |
| July | 83.6°F | 64.7°F | 74.1°F | 4.16 in | — | 10 |
| August | 82.0°F | 62.6°F | 72.3°F | 3.50 in | — | 10 |
| September | 76.3°F | 54.4°F | 65.4°F | 4.18 in | — | 8 |
| October | 63.8°F | 41.8°F | 52.8°F | 3.03 in | 0.2 in | 10 |
| November | 49.3°F | 30.7°F | 40.0°F | 2.51 in | 1.4 in | 8 |
| December | 36.4°F | 20.5°F | 28.5°F | 2.17 in | 5.9 in | 9 |
Climate twins of Knoxville
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).