Weather in Indianapolis in May 2025
Average weather
Average temperature in Indianapolis in May
The expected average maximum temperature in May is +24°C with a maximum of +30°C and a minimum of +4°C.
The average maximum temperature goes up 85% by the end of the month, compared with the beginning of the month, from +8°C to +30°C.
Is Indianapolis warm or cold in May?
Indianapolis is typically warm in May.
Maximum temperatures go up compared to the previous month from +18°C to +23°C. The minimum temperature also goes up from +7°C to +13°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Indianapolis:
Climate in Indianapolis in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +18°C | +23°C | +28°C | ||||
| Min. temperature | ||||||
| -7°C | -1°C | +4°C | ||||
| Max. temperature | ||||||
| +30°C | +35°C | +40°C | ||||
| Rainfall | ||||||
| 107 mm | 115 mm | 95 mm | ||||
| Wind | ||||||
| 4 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 66% | 69% | 70% | ||||
| Air pressure | ||||||
| 1014 HPa | 1014 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 4 | 4 | 4 | ||||
| Cloudy days | ||||||
| 9 | 9 | 10 | ||||
| Rainy days | ||||||
| 16 | 16 | 14 | ||||
| Snowy days | ||||||
| 1 | 0 | 0 | ||||
May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +18°C to +23°C during the day. Prepare for more rain. Average rainfall goes from 107 mm to 115 mm. Humidity rises from 66% to 69%. Winds are calmer in comparison to April, going down from 4 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 4 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Indianapolis is gradually decreasing during May, going from 8 m/s to 3 m/s over the course of the month.
Rain
How was the weather last May in Indianapolis?
Climate Change over Years
The climate in Indianapolis in May has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+15°C) and the highest in 2012 (+19°C). The driest year was 1999 with only 656 mm of rainfall, and the wettest year was 2019 with 1833 mm.
FAQ
Is May a good time to visit Indianapolis?
Can you sunbathe in Indianapolis in May?
Is Indianapolis rainy in May?
Is it sunny in Indianapolis in May?
Other cities in USA
Monthly weather in Indianapolis
Source of the data
For this page, we’ve looked at the typical weather in Indianapolis, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.