Pontiac, IL
Climate overview — based on NOAA 1991-2020 normals from PONTIAC, IL US.
Year-round temperatures (°F)
Climate summary
Pontiac has an annual average temperature of 51.8°F with about 37 inches of precipitation per year and 25.1 inches of snow. The warmest month is July (average high 84.3°F), and the coldest is January (average low 17.2°F). May is typically the wettest month (4.43 in) and February the driest (1.76 in). Snow typically falls from November through April.
Best time to visit Pontiac
Full guide →Climate change signal
All-time records →9 of 366 (2.5%) of Pontiac'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.
| 1900s | 21 | |
| 1910s | 61 | |
| 1920s | 42 | |
| 1930s | 91 | |
| 1940s | 13 | |
| 1950s | 17 | |
| 1960s | 17 | |
| 1970s | 15 | |
| 1980s | 32 | |
| 1990s | 15 | |
| 2000s | 20 | |
| 2010s | 22 |
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 | 32.4°F | 17.2°F | 24.8°F | 1.99 in | 6.7 in | 9 |
| February | 37.0°F | 20.5°F | 28.8°F | 1.76 in | 8.0 in | 8 |
| March | 49.3°F | 30.0°F | 39.6°F | 2.62 in | 3.4 in | 10 |
| April | 62.8°F | 40.6°F | 51.7°F | 3.49 in | 0.6 in | 11 |
| May | 73.6°F | 52.1°F | 62.8°F | 4.43 in | — | 12 |
| June | 82.0°F | 62.1°F | 72.0°F | 3.90 in | — | 10 |
| July | 84.3°F | 65.7°F | 75.0°F | 3.71 in | — | 9 |
| August | 83.0°F | 63.6°F | 73.3°F | 3.73 in | — | 9 |
| September | 78.1°F | 55.7°F | 66.9°F | 3.39 in | — | 8 |
| October | 65.3°F | 43.8°F | 54.6°F | 3.24 in | — | 8 |
| November | 50.2°F | 32.5°F | 41.3°F | 2.56 in | 0.7 in | 9 |
| December | 37.8°F | 22.7°F | 30.3°F | 2.13 in | 5.7 in | 9 |
Climate twins of Pontiac
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).