Historical weather data, all-time temperature records, and monthly climate averages for Warsaw, IN. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4 in Warsaw sits in that classic early-spring push-pull — average highs of 56° with lows still dipping to 33°. The range of outcomes is wide: this date has seen a balmy 82° back in 1988 and a brutal 18° as recently as 2021. Snow is nearly off the table at just a 1% chance, but a jacket is still warranted.
Warsaw's weather history spans 130 years of genuine extremes — from a scorching 103° in June 2012 to a bone-cracking -25° in January 1972, a swing of 128 degrees. A single storm in September 1958 dumped 5.67 inches of rain, and a January 2014 snowstorm buried the area under 10 inches in one day.
Summers are the main event here, with highs peaking around 84° during the first week of July and staying warm through August. Winters are genuinely cold — mid-January highs average just 31° — so the window between May and September is when Warsaw truly comes alive. The wettest stretch falls in late July, averaging over an inch of precipitation per week.