Freeport, IL Weather & Climate Normals
Freeport's real weather, in one number
Freeport, IL scores 43/100 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.
Freeport's hottest and coldest months
Freeport's hottest month is Jul, averaging 72°F; its coldest is Jan, averaging 20°F, a 52.8°F swing across the year, one of the widest gaps in this dataset.
Freeport's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 28°F | 11°F | 1.58in | 9.7in |
| Feb | 33°F | 15°F | 1.65in | 8.5in |
| Mar | 45°F | 26°F | 2.15in | 3.8in |
| Apr | 58°F | 36°F | 3.66in | 0.8in |
| May | 70°F | 48°F | 4.36in | 0in |
| Jun | 79°F | 59°F | 5.26in | 0in |
| Jul | 82°F | 62°F | 4.21in | 0in |
| Aug | 81°F | 60°F | 4.21in | 0in |
| Sep | 74°F | 51°F | 4.11in | 0in |
| Oct | 62°F | 39°F | 2.98in | 0.2in |
| Nov | 46°F | 28°F | 2.36in | 2.6in |
| Dec | 33°F | 18°F | 1.83in | 8.9in |
May, Jun, Jul, Aug, and Sep are the best time to see Freeport at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Freeport
Freeport averages 38.36in of precipitation a year across roughly 116 days with measurable rain or snow, and 34.5in of snow a year.
Where Freeport ranks
Freeport ranks 4001 of 4876 US cities in this dataset for comfort score, and 241 of 330 within IL. About 23,140 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Freeport Waste Wtp, IL US, 1.7 miles from Freeport, 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