Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
Weather Guide
Indianapolis, Indiana, United States Average Monthly Weather
Weather score48Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 17°C, sunshine averages 6.7h per day, and rainfall totals about 1032mm.
Annual weather
Annual averages
Temp
17°C
Rain
1032mm
Annual total
Sun
6.7h
Weather score
48
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 93mm, so some wet days are possible.
Bright
Sunshine averages 8.9h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Indianapolis, Indiana, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August29°C average high
August is one of Indianapolis' warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
August93mm average rain
August sits near Indianapolis' yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February, June, and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August8.9 hours average sun
August is brighter than Indianapolis' yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
August79 weather score
August is one of Indianapolis' best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels in Indianapolis, Indiana, United States
Marriott
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