Montgomery, IL Weather & Climate Normals
Montgomery's real weather, in one number
Montgomery, 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.
Montgomery's hottest and coldest months
Montgomery's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 23°F, a 51.1°F swing across the year, one of the widest gaps in this dataset.
Montgomery's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 31°F | 16°F | 1.86in | 9.1in |
| Feb | 35°F | 20°F | 1.83in | 7.9in |
| Mar | 47°F | 29°F | 2.35in | 2.6in |
| Apr | 60°F | 39°F | 4.05in | 0.6in |
| May | 71°F | 50°F | 4.86in | 0in |
| Jun | 81°F | 60°F | 4.5in | 0in |
| Jul | 84°F | 65°F | 4.19in | 0in |
| Aug | 82°F | 63°F | 3.86in | 0in |
| Sep | 76°F | 55°F | 3.37in | 0in |
| Oct | 63°F | 43°F | 3.7in | 0in |
| Nov | 48°F | 32°F | 2.71in | 1.3in |
| Dec | 36°F | 22°F | 2.19in | 6.4in |
May, Jun, Jul, Aug, and Sep are the best time to see Montgomery at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Montgomery
Montgomery averages 39.47in of precipitation a year across roughly 116 days with measurable rain or snow, and 27.9in of snow a year.
Where Montgomery ranks
Montgomery ranks 3757 of 4876 US cities in this dataset for comfort score, and 192 of 330 within IL. About 21,957 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Aurora, IL US, 4.8 miles from Montgomery, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station