Historical weather data, all-time temperature records, and monthly climate averages for Salem, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Salem runs right on the edge of winter's last grip — expect a high near 52° and a low that can still dip to freezing. The date's range tells the whole story: a balmy 75° back in 2005, but a bitter 16° low as recently as 2018. Rain is possible (about a 1-in-3 shot), but at least the snow days are behind you.
Salem doesn't mess around at the extremes — this southeastern Wisconsin town has seen a scorching 106° in July 2012 and a jaw-dropping -28° in January 2019, a swing of 134 degrees. A nearly 4-inch rain day in June 2000 rounds out a place that earns every season fully.
Summer is the sweet spot, peaking the week of July 16–22 with average highs of 84°, while January bottoms out around 28° — cold enough to mean business. If you're packing an umbrella, aim for early May, the wettest stretch of the year. The shoulder months of April and October offer mild temps but keep your layers handy.