Historical weather data, all-time temperature records, and monthly climate averages for Lansing, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Lansing lands right in the thick of spring's unpredictability — 72 years of data put the average high at 55° and the low at 34°, but this date has swung from a balmy 80° in 2012 to a bitter 18° back in 1982. There's nearly a coin-flip chance of rain (43%), though snow is almost off the table at just 1%.
Lansing's weather has serious range — from a scorching 103° on August 2, 1988 to a brutal -27° on January 20, 1985, that's a 130-degree spread in recorded history. The wettest single day dumped 6.55 inches on July 18, 1996, and a February 2011 snowstorm buried the area under 19 inches in one shot.
Summer is the headliner here: the week of July 16–22 averages a high of 85° and is also the wettest stretch of the year at 1.29 inches. Winter bites hard — January highs average just 29-30°, making mid-January the coldest stretch on the calendar. Spring and fall offer the most comfortable temperatures, with April averaging 59° and October right around 64°.