Crest Hill, IL Weather & Climate Normals
Crest Hill's real weather, in one number
Crest Hill, IL scores 44/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Crest Hill's hottest and coldest months
Crest Hill's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 24°F, a 50.7°F swing across the year, one of the widest gaps in this dataset.
Crest Hill's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 32°F | 16°F | 2.19in | 10.6in |
| Feb | 36°F | 20°F | 1.98in | 8.7in |
| Mar | 49°F | 30°F | 2.71in | 4.2in |
| Apr | 61°F | 40°F | 4.11in | 0.9in |
| May | 72°F | 50°F | 4.81in | 0in |
| Jun | 82°F | 60°F | 4.68in | 0in |
| Jul | 85°F | 65°F | 4.5in | 0in |
| Aug | 83°F | 63°F | 4.36in | 0in |
| Sep | 76°F | 55°F | 3.31in | 0in |
| Oct | 64°F | 44°F | 3.67in | 0.1in |
| Nov | 49°F | 32°F | 2.67in | 1.2in |
| Dec | 37°F | 22°F | 2.15in | 7.5in |
May, Jun, Jul, Aug, and Sep are the best time to see Crest Hill at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Crest Hill
Crest Hill averages 41.14in of precipitation a year across roughly 127 days with measurable rain or snow, and 33.2in of snow a year.
Where Crest Hill ranks
Crest Hill ranks 3762 of 4876 US cities in this dataset for comfort score, and 193 of 330 within IL. About 20,223 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Romeoville Wfo, IL US, 2.5 miles from Crest Hill, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure