Historical weather data, all-time temperature records, and monthly climate averages for Appleton, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Appleton is a classic early spring coin flip — historically, highs average just 47° with a 38% chance of precipitation and a 1-in-8 shot of snow. The date has seen everything from a balmy 73° back in 1997 to a brutal 9° low in 1995, a 64-degree swing that pretty much defines Wisconsin spring.
Appleton's weather history is not for the faint of heart — the thermometer has swung from a scorching 107° in July 1936 all the way down to -32° in February 1929, a range of 139 degrees. On the wet side, a single July day in 2010 dumped 4.45 inches of rain, and March 2026 produced a staggering 18.2 inches of snow in one event.
Summer is Appleton's sweet spot, with highs peaking around 82–83° in mid-July and the wettest stretch arriving just before that in late June. If you're cold-averse, avoid late January through early February, when average highs barely crack 24°. Spring and fall offer mild shoulders but expect wide swings — this city doesn't ease into season changes.