Historical weather data, all-time temperature records, and monthly climate averages for Menomonee Falls, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Menomonee Falls is classic early spring — expect a high near 49° and a low around 30°, with a 40% chance of rain and a lingering 5% shot at snow. The date has seen wild swings over 81 years of records, from a balmy 73° back in 1956 to a brutal 13° low in 1995.
Menomonee Falls knows extremes. The thermometer has swung from a scorching 104° on July 6, 2012 to a bone-cracking -40° on January 10, 1982 — a spread of 144 degrees. On the wet side, a single August day in 2025 dumped 8.62 inches of rain, and a February 2008 storm buried the area under 15.3 inches of snow.
Summers here are warm and humid, peaking mid-July with average highs of 82°, while winters are genuinely cold — mid-January averages just 26°. Your best bet for rain gear is late June, the wettest stretch of the year. If you want mild and dry, aim for September and October, when highs sit in the 60s and 70s.