Current Weather and Forecast in Indianapolis, IN
Indiana, United States 🇺🇸
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About the weather in Indianapolis
Indianapolis has a humid subtropical climate. July is the warmest month, with average highs of 85°, and January the coldest, when nights fall to around 23°. March brings the most rain, on about 13 days, while July is the sunniest, with 11.7 hours of sunshine a day. Over a whole year it rains on roughly 130 days.
Indianapolis climate guide: monthly averages, seasons and the best time to visit
Common questions
What is the coldest month in Indianapolis?
January, with highs of 38°F (3°C) and lows near 23°F (-5°C). The coldest day in the 2015-2024 record fell to -18°F (-28°C).
What is the rainiest month in Indianapolis?
March, at 5.3 inches (135 mm) over about 13 days. September is the driest month, at 2.9 inches (74 mm).
What is the best month to go to Indianapolis?
August to October and June is the sweet spot for Indianapolis - warm days, manageable rainfall and plenty of daylight line up. Expect 78°F (25°C) in the afternoon and around 10 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in August.
Is there snow in Indianapolis?
Yes - about 10 days a year carry measurable snowfall, concentrated November through April.
How sunny is Indianapolis?
8.5 hours a day averaged over the year, peaking in July at 11.7 hours.
Which month is warmest in Indianapolis?
July, averaging 85°F (29°C) by day and 67°F (20°C) overnight. The hottest single day in our 2015-2024 record for this location reached 95°F (35°C).
Is Indianapolis hot in summer?
July averages 85°F (29°C). Hot afternoons happen but extremes are not the norm.
How humid does Indianapolis get?
Relative humidity averages 70% across the year, which reads as fairly humid. Paired with July heat, muggy afternoons are routine.