Palmer, IL
Climate overview — based on NOAA 1991-2020 normals from MORRISONVILLE, IL US.
Year-round temperatures (°F)
Climate summary
Palmer has an annual average temperature of 53.6°F with about 38.1 inches of precipitation per year and 16.2 inches of snow. The warmest month is July (average high 86.4°F), and the coldest is January (average low 19.3°F). May is typically the wettest month (4.55 in) and February the driest (1.82 in). Snow typically falls from October through March.
Best time to visit Palmer
Full guide →Climate change signal
All-time records →83 of 366 (22.7%) of Palmer'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.
| 1940s | 0 | |
| 1950s | 0 | |
| 1970s | 3 | |
| 1980s | 101 | |
| 1990s | 59 | |
| 2000s | 61 | |
| 2010s | 69 | |
| 2020s | 73 |
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 | 35.6°F | 19.3°F | 27.5°F | 2.18 in | 5.9 in | 7 |
| February | 40.8°F | 23.2°F | 32.0°F | 1.82 in | 3.9 in | 7 |
| March | 51.8°F | 32.1°F | 41.9°F | 2.73 in | 2.4 in | 9 |
| April | 65.1°F | 42.8°F | 53.9°F | 4.31 in | — | 10 |
| May | 75.0°F | 54.3°F | 64.7°F | 4.55 in | — | 11 |
| June | 83.2°F | 63.2°F | 73.2°F | 3.92 in | — | 9 |
| July | 86.4°F | 65.7°F | 76.0°F | 2.95 in | — | 7 |
| August | 85.5°F | 63.5°F | 74.5°F | 3.50 in | — | 7 |
| September | 80.7°F | 55.6°F | 68.1°F | 3.53 in | — | 7 |
| October | 68.1°F | 43.8°F | 55.9°F | 3.21 in | 0.2 in | 9 |
| November | 52.7°F | 33.0°F | 42.8°F | 3.20 in | 0.6 in | 8 |
| December | 40.7°F | 24.5°F | 32.6°F | 2.22 in | 3.2 in | 8 |
Climate twins of Palmer
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).