Indianapolis
Indiana, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Indianapolis, IN

The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape, and a perfect blue night sky
The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape, and a perfect blue night sky
May is the wettest month of the year in Indianapolis with an average rainfall of 5" (127mm). The daily sunshine is 8.5 hours, which keeps the average temperatures in the warm 53.1°F (11.7°C) to 73°F (22.8°C) range and sees visitors despite the rain. Spring is the season of blooming flowers, abundant fresh water flowing in the rivers and creeks, and the sweet aroma of the soil.
The long 14-hour days are free of snow, and the landscape is green everywhere. For a few people, the spring season is the time of allergies with pollen circulating in the air.
Overall, the May weather is comfortable except for the rain.

What is the temperature in May in Indianapolis?

In Indianapolis, Indiana, in May, the average high-temperature is 72.9°F (22.7°C), and the average low-temperature is 52.5°F (11.4°C).

What is the average humidity in May in Indianapolis?

The average relative humidity in May is 67.1%.

How many days does it rain in May in Indianapolis?

In May, in Indianapolis, the rain falls for 13.1 days. Throughout May, 5.1" (128.3mm) of precipitation is accumulated.

What is the wettest month in Indianapolis?

May is the month with the most rainfall in Indianapolis. Rain falls for 13.1 days and accumulates 5.1" (128.3mm) of precipitation.

Does it snow in Indianapolis in May?

In May, in Indianapolis, Indiana, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Indianapolis?

In Indianapolis, Indiana, the average length of the day in May is 14.4h.

How many hours of sunshine does Indianapolis have in May?

In Indianapolis, Indiana, the average sunshine in May is 8.5h.

What is the UV index intensity in May in Indianapolis?

In Indianapolis, Indiana, the average daily maximum UV index in May is 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in May - Indianapolis, IN
  • Average high temperature in May: 72.8°F

The warmest month (with the highest average high temperature) is July (85°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in May: 52.6°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average humidity in May - Indianapolis, IN
  • Average humidity in May: 67.1%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is April (65.6%).

Average rainfall in May - Indianapolis, IN
  • Average rainfall in May: 5.1"

The wettest month (with the highest rainfall) is May (5.1").
The driest month (with the lowest rainfall) is February (2.3").

Average rainfall days in May - Indianapolis, IN
  • Average rainfall days in May: 13.1 days

The month with the highest number of rainy days is May (13.1 days).
The month with the lowest number of rainy days is September (8.1 days).

Average snowfall in May - Indianapolis, IN
  • Average snowfall in May: 0"

The month with the highest snowfall is January (8.6").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in May - Indianapolis, IN
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (7.5 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Indianapolis, IN
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 8.5h

The month with most sunshine is June (Average sunshine: 9.6h).
The month with least sunshine is December (Average sunshine: 3.3h).

Average UV index in May - Indianapolis, IN
  • Average UV index in May: 8

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).