Historical weather data, all-time temperature records, and monthly climate averages for Fort Atkinson, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Fort Atkinson sits right on winter's edge — the average high of 52° and low of 32° means freezing nights are still very much on the table. The date's full range tells that story well: it's hit 76° as recently as 2021, but bottomed out at a brutal 14° back in 1995. There's a 1-in-3 chance of some precipitation today, though actual snow is nearly off the board at just 2%.
Fort Atkinson plays no games at the extremes — a 103° scorcher in July 2011 and a -39° nightmare in February 1996 give this location a swing of 142 degrees across its recorded history. A single storm dropped 15.2 inches of snow on February 7, 2008, and a September deluge in 1941 dumped 4.5 inches of rain in one day.
Summer is short and sweet here, with mid-July peaking around 84° and the wettest weather arriving alongside it — not ideal for outdoor events, but lush. Winters are legitimately harsh, with January and February highs hovering in the upper 20s to low 30s. Spring and fall are the transition shoulder seasons: May warms quickly to 70°, and October holds a pleasant 62° before November drops things off fast.