Indianapolis · May
Run in the morning.
Comfortable average high of 73°F, dipping to 54°F at night. Expect 17 rain days — plan around the radar. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
Avg high / low
73° / 54°F
Humidity
70%
Rain days
17/mo
Wind
12 mph
What May feels like in Indianapolis
Sunrise
06:29
Mid-month average
Sunset
20:52
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Indianapolis in May
The kit for May in Indianapolis: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
May vs the surrounding months
vs April
+11° avg high
+3 rain days
Indianapolis in April →
May
73°F avg high
17 rain days
Best: morning
vs June
-9° avg high
+2 rain days
Indianapolis in June →
Frequently Asked Questions
What is the best time of day to run in Indianapolis in May?+
Morning. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
What's the average temperature in Indianapolis in May?+
Average high 73°F, average low 54°F.
How does May compare to surrounding months in Indianapolis?+
Compared to April (avg high 62°F), May is warmer. Compared to June (avg high 82°F), May is cooler.
Does it rain often in Indianapolis in May?+
Expect about 17 measurable rain days in May, on average.