Historical weather data, all-time temperature records, and monthly climate averages for Franklin, IN. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Franklin lands right in the heart of spring's unpredictability — expect a high near 61° and a low around 38°, but history shows this date can swing wildly, from a balmy 84° in 2012 to a brutal 20° low back in 1975. There's roughly a 38% chance of rain, so keep a jacket handy, but you can safely leave the snow boots at home.
Franklin's weather has some serious range — 133 years of records reveal an all-time high of 108° in July 1936 and an all-time low of -25° in January 1994, a jaw-dropping 133-degree spread. On the wet side, a single day in June 2021 dumped 5.35 inches of rain, and December 2012 brought 9.7 inches of snow in one shot.
Summers in Franklin are legitimately hot, with highs peaking around 87° during the second week of July, while January bottoms out near 37°. If you're rain-averse, avoid early May — the week of May 7–13 is the wettest of the year, averaging over an inch of precipitation. Spring and fall offer the most comfortable windows, with April and October highs in the comfortable mid-60s.