Historical weather data, all-time temperature records, and monthly climate averages for Beloit, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Beloit sits right on the edge of spring — historically, highs average just 53° with lows still dipping to 33°. The date has a wild range in the record books, from a balmy 79° back in 1929 to a brutal 15° in 1936. There's about a 1-in-3 chance of rain today, but snow is essentially off the table.
Beloit knows weather extremes — the all-time high of 110° in July 1936 and the all-time low of -29° in January 2019 give this city a 139-degree spread between its worst heat and worst cold. A single February storm in 2011 dropped 15 inches of snow in one day, and a June day in 1898 brought over six and a half inches of rain.
Summer is the sweet spot for Beloit, with late July averaging highs of 85° — but winter bites hard, with late January highs barely reaching 28°. If rain is a concern, June is the wettest stretch of the year. Spring and fall offer mild transitions, with April and October averaging highs in the upper 50s to low 60s.