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, the last month of the spring, in Indianapolis, is a pleasant month, with average temperature varying between 71.8°F (22.1°C) and 55.6°F (13.1°C).

Temperature

In May, the average high-temperature increases, from an enjoyable 61.5°F (16.4°C) in April, to a pleasant 71.8°F (22.1°C). In Indianapolis, the average low-temperature is 55.6°F (13.1°C).

Humidity

The average relative humidity in Indianapolis, Indiana, is 79%.

Rainfall

May is the month with the most rainfall. Rain falls for 17.6 days and accumulates 2.68" (68mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in Indianapolis is 14.4h.

Sunshine

In Indianapolis, Indiana, the average sunshine in May is 8.8h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Indianapolis?

The average high-temperature, in May, in Indianapolis, is 71.8°F (22.1°C), while the average low-temperature is 55.6°F (13.1°C).

What is the average humidity in May in Indianapolis?

The average relative humidity in May in Indianapolis, Indiana, is 79%.

How many days does it rain in May in Indianapolis?

In Indianapolis, Indiana, in May, during 17.6 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

What is the rainiest month in Indianapolis?

The month with the most rainfall in Indianapolis, Indiana, is May when the rain falls for 17.6 days and typically aggregates up to 2.68" (68mm) of precipitation.

Does it snow in Indianapolis in May?

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

When it does not snow in Indianapolis?

In Indianapolis snow does not fall in May through October.

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

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

How many hours of sunshine does Indianapolis have in May?

In Indianapolis, Indiana, the average sunshine in May is 8.8h.

What is the month with the highest UV index in Indianapolis?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in May in Indianapolis?

In May, the average daily maximum UV index in Indianapolis, Indiana, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Indianapolis, IN
  • Average high temperature in May: 22.1°C

The warmest month (with the highest average high temperature) is July (27.8°C).
The month with the lowest average high temperature is January (0.8°C).

  • Average low temperature in May: 13.1°C

The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

Average humidity in May - Indianapolis, IN
  • Average humidity in May: 79%

The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).

Average rainfall in May - Indianapolis, IN
  • Average rainfall in May: 68mm

The wettest month (with the highest rainfall) is May (68mm).
The driest month (with the lowest rainfall) is February (31mm).

Average rainfall days in May - Indianapolis, IN
  • Average rainfall days in May: 17.6 days

The month with the highest number of rainy days is May (17.6 days).
The month with the lowest number of rainy days is February (6.8 days).

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

The month with the highest snowfall is December (58mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in May - Indianapolis, IN
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (7.9 days).
Months with the lowest number of snowfall days are 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: 8.8h

The month with most sunshine is July (Average sunshine: 10.3h).
The month with least sunshine is January (Average sunshine: 4.1h).

Average UV index in May - Indianapolis, IN
  • Average UV index in May: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, October, November and December (UV index 2).