Monthly weather forecast and climate
Indianapolis, IN

The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape
The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape

Weather in January

January, the same as December, is another cold winter month in Indianapolis, Indiana, with average temperature ranging between max 33.4°F (0.8°C) and min 21°F (-6.1°C). With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21°F (-6.1°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter, in Indianapolis, is another cold month, with average temperature varying between 25.2°F (-3.8°C) and 38.3°F (3.5°C). In February, the average high-temperature is practically the same as in January - a still wintry 38.3°F (3.5°C). Weather in February »

Weather in March

March, the first month of the spring, in Indianapolis, is a fresh month, with average temperature ranging between min 35.1°F (1.7°C) and max 50°F (10°C). In March, the average high-temperature increases, from a cold 38.3°F (3.5°C) in February, to a cool 50°F (10°C). Weather in March »

Weather in April

April is a comfortable spring month in Indianapolis, Indiana, with average temperature varying between 61.5°F (16.4°C) and 45.1°F (7.3°C). In April, the average high-temperature increases, from a cool 50°F (10°C) in March, to a comfortable 61.5°F (16.4°C). Weather in April »

Weather in May

May, the last month of the spring, in Indianapolis, is an agreeable month, with average temperature varying between 71.8°F (22.1°C) and 55.6°F (13.1°C). In Indianapolis, the average high-temperature in May increases, from a comfortable 61.5°F (16.4°C) in April, to an agreeable 71.8°F (22.1°C). Weather in May »

Weather in June

June, the first month of the summer, in Indianapolis, is a warm month, with average temperature ranging between max 80.2°F (26.8°C) and min 64°F (17.8°C). In June, the average high-temperature marginally rises, from an agreeable 71.8°F (22.1°C) in May, to a moderately hot 80.2°F (26.8°C). Weather in June »

Weather in July

July, like June, in Indianapolis, Indiana, is a moderately hot summer month, with average temperature ranging between max 82°F (27.8°C) and min 66.2°F (19°C). The warmest month is July, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 66.2°F (19°C). In July, the average heat index is calculated to a tropical 88.9°F (31.6°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Indianapolis, Indiana, with average temperature ranging between max 81.1°F (27.3°C) and min 64°F (17.8°C). In Indianapolis, the average high-temperature in August is practically the same as in July - a still warm 81.1°F (27.3°C). Weather in August »

Weather in September

September, the first month of the autumn, in Indianapolis, is still a warm month, with average temperature varying between 58.3°F (14.6°C) and 75.9°F (24.4°C). In September, the average high-temperature is essentially the same as in August - a still warm 75.9°F (24.4°C). Weather in September »

Weather in October

October, like September, in Indianapolis, Indiana, is another comfortable autumn month, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 63.1°F (17.3°C). In Indianapolis, the average high-temperature in October decreases, from a moderately hot 75.9°F (24.4°C) in September, to an enjoyable 63.1°F (17.3°C). Weather in October »

Weather in November

November, the last month of the autumn, in Indianapolis, is also a frosty month, with average temperature fluctuating between 49.3°F (9.6°C) and 36.1°F (2.3°C). In November, the average high-temperature decreases, from an enjoyable 63.1°F (17.3°C) in October, to a frosty 49.3°F (9.6°C). Weather in November »

Weather in December

December, the first month of the winter, in Indianapolis, is still a cold month, with average temperature varying between 28.2°F (-2.1°C) and 38.3°F (3.5°C). In December, the average high-temperature drops, from a frosty 49.3°F (9.6°C) in November, to a cold 38.3°F (3.5°C). Weather in December »
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FAQ

What is the coldest month in Indianapolis?

January is the coldest month in Indianapolis, with an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21°F (-6.1°C).

How much does it rain in Indianapolis?

Throughout the year, in Indianapolis, there are 146.4 rainfall days, and 21.14" (537mm) of precipitation is accumulated.

When does it snow in Indianapolis?

Months with snowfall are January through April, November and December.

How many days does it snow in Indianapolis?

In Indianapolis, Indiana, during the entire year, snow falls for 28.1 days, and aggregates up to 7.87" (200mm) of snow.

What is the month with the least sunshine in Indianapolis?

The month with the least sunshine is January, with an average of 4.1h of sunshine.

When is the lowest UV index in Indianapolis?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Indianapolis, Indiana.

What is the driest month in Indianapolis?

February is the month with the least rainfall in Indianapolis. Rain falls for 6.8 days and accumulates 1.22" (31mm) of precipitation.

What is the wettest month in Indianapolis?

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

When it does not snow in Indianapolis?

May through October are months without snowfall in Indianapolis, Indiana.

What are the months with the highest UV index in Indianapolis?

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

When are the longest days in Indianapolis?

With an average of 15h of daylight, June has the longest days of the year.

What is the warmest month in Indianapolis?

July is the warmest month in Indianapolis, Indiana, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 66.2°F (19°C).

What month has the most sunshine in Indianapolis?

With an average of 10.3h of sunshine, July has the most sunshine of the year.

What is the least humid month in Indianapolis?

October is the least humid month, with an average relative humidity of 73%.

What is the most humid month in Indianapolis?

With an average relative humidity of 82%, December is the most humid month in Indianapolis.

What is the snowiest month in Indianapolis?

The month with the most snowfall is December when snow falls for 6.2 days and typically aggregates up to 2.28" (58mm) of snow.

What is the month with the shortest days in Indianapolis?

December has the shortest days of the year, with an average of 9.4h of daylight.

Average pressure
Indianapolis, IN

Average pressure - Indianapolis, IN

The month with the highest atmospheric pressure is January (1020.6mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

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Average wind speed
Indianapolis, IN

Average wind speed - Indianapolis, IN

The windiest months (with the highest average wind speed) are January and February (15.8km/h).
The calmest month (with the lowest average wind speed) is August (9.2km/h).

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Average humidity
Indianapolis, IN

Average humidity - Indianapolis, IN

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

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Average rainfall
Indianapolis, IN

Average rainfall - Indianapolis, IN

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

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Average rainfall days
Indianapolis, IN

Average rainfall days - Indianapolis, IN

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

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Average snowfall
Indianapolis, IN

Average snowfall - Indianapolis, IN

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

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Average snowfall days
Indianapolis, IN

Average snowfall days - Indianapolis, IN

The month with the highest number of snowfall days is January (7.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Indianapolis, IN

Average daylight / Average sunshine - Indianapolis, IN

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

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

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Average sunshine days
Indianapolis, IN

Average sunshine days - Indianapolis, IN

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index
Indianapolis, IN

Average UV index - Indianapolis, IN

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).

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Average visibility
Indianapolis, IN

Average visibility - Indianapolis, IN

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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