Indianapolis Weather

Indiana has an invigorating climate of warm summers and cool winters because of its location in the middle latitudes in the interior of a large continent. The state has four distinct seasons. Late spring and early fall are generally considered the most pleasant seasons. The combination of sunlight, moderate temperatures and adequate moisture, along with rich soil, makes Indiana one of the most important agricultural states.

When you arrive to Butler in August, the average high temperature is around 83F/28C. August ends a stretch of the wettest period of the year, but precipitation is fairly regular throughout the year—there is no real “rainy” season. By the end of the first semester in December, the average high temperature is about 39F/4C, and it is likely you have seen the first snow of the year. When second semester starts in January, it is the coldest it will be all year, with average highs temps of 34F/1C; but quite often the highs will be closer to 20F/-6C and low temps near 10F/-12C. And January and February have the most snow, with an average of 15in/38cm falling during those two months in occasional storms. But by the middle of March, high temperatures are up to about 52F/11C. Warm spring days, some sunny and others with thunderstorms, go straight into May, when high temperatures are up to 68F/20C.

Just for fun, some records for Indianapolis, courtesy of the National Weather Service in Indianapolis:

  • Highest Temperature ever recorded: 107F/42C on July 25, 1934
  • Lowest Temperature ever recorded: -27F/-33C on January 19, 1994
  • Most rain in 24 hours: 7.20in/18.2cm on September 1, 2003
  • Most rain in 1 Month: 13.12in/33.3cm in July 1875
  • Most snowfall in 24 hours: 12.5in/31.7cm on February 24-25, 1965
  • Most snowfall in 1 month: 30.6in/77.7cm in January 1978
There are many sources for weather and climate information in Indianapolis, and you can even find out the forecast and what the weather is like right now: