Historical weather data, all-time temperature records, and monthly climate averages for Caledonia, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Caledonia sits right on that knife-edge of late winter and early spring — average highs of 48° with lows still dipping to freezing. The date has seen wild swings over 88 years of records, from a balmy 79° in 1997 to a brutal 15° low back in 1982. There's also a 1-in-8 chance of snow today, so don't put the ice scraper away just yet.
Caledonia's weather has real teeth on both ends of the thermometer — 103° in July 1995 and -26° in January 1982 represent a jaw-dropping 129-degree spread in all-time extremes. A single August day in 1986 dropped 6.81 inches of rain, and February 1960 buried the area under 16.7 inches of snow in one storm.
Summer is the sweet spot here, with the warmest week of the year running July 16–22 at an average high of 81°, while mid-January bottoms out around 28°. If rain is a concern, late June is the wettest stretch of the year. For the most comfortable visit, aim for late July through August before the September cooldown begins.