Historical weather data, all-time temperature records, and monthly climate averages for Niles, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Niles sits in that classic Midwest in-between zone — historically averaging a high of 53° and a low of 34°, it's mild but not yet settled. The date has seen wild swings over 67 years of records, from a balmy 85° in 1988 to a brutal 18° low in 1975. There's a 37% chance of rain today, so keep a jacket handy.
Niles has seen the full extremes of a Chicago-area climate, from a scorching 104° on June 20, 1988, to a bone-chilling -27° on January 20, 1985 — a swing of 131 degrees. A single day in July 2011 dropped 6.86 inches of rain, and a January 1999 snowstorm buried the area under 18.6 inches in 24 hours.
Summer is the clear sweet spot, with highs peaking around 84-85° in mid-July — the same week that also brings the year's heaviest rainfall at over an inch. Winter is harsh and gray, with average January highs barely cracking 30°. If you're planning a visit, May through September offers the most comfortable conditions before the cold sets in fast come November.