New Haven, IL
Climate overview — based on NOAA 1991-2020 normals from JT MYERS LOCKS & DAM, IN US.
Year-round temperatures (°F)
Climate summary
New Haven has an annual average temperature of 56.8°F with about 48.2 inches of precipitation per year and 7.5 inches of snow. The warmest month is July (average high 88.2°F), and the coldest is January (average low 25.5°F). April is typically the wettest month (5.38 in) and August the driest (3.12 in). Snow typically falls from December through March.
Best time to visit New Haven
Full guide →Climate change signal
All-time records →155 of 366 (42.3%) of New Haven'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 | 93 | |
| 2010s | 207 | |
| 2020s | 66 |
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 | 42.2°F | 25.5°F | 33.8°F | 3.57 in | 2.1 in | 9 |
| February | 46.7°F | 28.0°F | 37.4°F | 3.50 in | 1.7 in | 9 |
| March | 56.4°F | 36.5°F | 46.4°F | 4.48 in | 0.7 in | 11 |
| April | 67.9°F | 46.1°F | 57.0°F | 5.38 in | — | 10 |
| May | 76.8°F | 56.0°F | 66.4°F | 5.02 in | — | 11 |
| June | 85.3°F | 64.2°F | 74.8°F | 4.75 in | — | 9 |
| July | 88.2°F | 67.8°F | 78.0°F | 3.65 in | — | 8 |
| August | 87.5°F | 66.2°F | 76.8°F | 3.12 in | — | 6 |
| September | 81.3°F | 58.9°F | 70.1°F | 3.35 in | — | 6 |
| October | 69.6°F | 47.4°F | 58.5°F | 3.28 in | — | 7 |
| November | 55.7°F | 36.0°F | 45.8°F | 4.09 in | — | 9 |
| December | 45.3°F | 28.9°F | 37.1°F | 4.02 in | 3.0 in | 10 |
Climate twins of New Haven
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).