Highland, IL Weather & Climate Normals
Highland's real weather, in one number
Highland, 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. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Highland's hottest and coldest months
Highland's hottest month is Jul, averaging 79°F; its coldest is Jan, averaging 34°F, a 45.4°F swing across the year, one of the widest gaps in this dataset.
Highland's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 43°F | 24°F | 2.56in | 3.4in |
| Feb | 49°F | 28°F | 2.16in | 3.3in |
| Mar | 59°F | 36°F | 3.44in | 1in |
| Apr | 71°F | 46°F | 4.9in | 0in |
| May | 79°F | 56°F | 5.05in | 0in |
| Jun | 87°F | 65°F | 4.62in | 0in |
| Jul | 90°F | 68°F | 4.03in | 0in |
| Aug | 89°F | 65°F | 3.92in | 0in |
| Sep | 83°F | 57°F | 3.35in | 0in |
| Oct | 73°F | 47°F | 3.12in | 0in |
| Nov | 58°F | 37°F | 3.6in | 0.6in |
| Dec | 46°F | 28°F | 2.61in | 2.9in |
Apr, May, Sep, and Oct are the best time to see Highland at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Highland
Highland averages 43.36in of precipitation a year across roughly 100 days with measurable rain or snow, and 11.2in of snow a year.
Where Highland ranks
Highland ranks 4072 of 4876 US cities in this dataset for comfort score, and 268 of 330 within IL. About 10,028 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Belleville Siu Rsch, IL US, 19.3 miles from Highland, 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