Historical weather data, all-time temperature records, and monthly climate averages for Milwaukee, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Milwaukee is a coin-flip kind of day — temperatures average a cool 48° high and 32° low, but the spread tells the real story: it's hit 79° (1997) and bottomed out at 15° (1982) on this same date. There's a 42% chance of precipitation and a 13% chance it comes down as snow, so early April here is best treated with low expectations and a layered wardrobe.
Milwaukee's weather has real range — 88 years of records capture everything from a brutal -26° in January 1982 to a sweltering 103° in July 1995, a 129-degree spread that earns the city its reputation for extremes. Summer can also turn violent, with a single day in August 1986 dropping 6.81 inches of rain, and winter can bury the city fast — 16.7 inches fell in a single February day in 1960.
Milwaukee's warmest stretch runs mid-July, when average highs peak at 81°, while mid-January is the city's coldest chapter at just 28°. If you're watching for rain, late June is the wettest week of the year, averaging just over an inch. The shoulder months of May (65°) and September (72°) offer the most comfortable conditions for a visit.