Historical weather data, all-time temperature records, and monthly climate averages for Shorewood, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Shorewood sits right on the edge of winter's last grip — the average high is just 48° with lows still dipping to freezing. There's a 42% chance of precipitation and a lingering 13% chance of snow, so don't put the winter coat away just yet. That said, the date has seen a 79° scorcher back in 1997, and a brutal 15° low in 1982, proving early April here plays by no one's rules.
Shorewood's weather has real teeth at both ends of the thermometer — the all-time high of 103° in July 1995 and the bone-chilling -26° in January 1982 represent a swing of nearly 130 degrees. 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. This is a place that earns its Midwest credentials.
Summer is the sweet spot — highs peak around 81° during the third week of July, with June through August offering the most comfortable stretch for being outdoors. Winters are genuinely cold, with January highs averaging just 28° and the coldest week of the year typically falling mid-month. If you're watching for rain, pack an umbrella in late June, when weekly precipitation averages over an inch.