Indiana Weather by Month — Temperature & Rainfall Guide

Indiana is a region in the United States of America. Many people wonder what the weather conditions are in Indiana over the year. What is the best time to visit Indiana?

This page shows the average weather conditions by month in Indiana over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

In January the weather in Indiana is generally less favorable. January is a winter month. The temperatures range from very low in Howe with -1°C (30°F) to low in Tell City with 6°C (43°F). On average, this month is one of the coldest months of the year in Indiana. So be prepared and make sure to dress up warm.

Find more detailed climate information for Indiana in January here.

In February the weather in Indiana is generally less favorable. February is a winter month. The temperatures range from very low in Howe with 0°C (32°F) to low in Clarksville with 7°C (45°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for Indiana in February here.

In March the weather in Indiana ranges from less favorable in Merrillville to mixed in Indianapolis. The temperatures range from low in Michigan City with 8°C (46°F) to moderate in Clarksville with 15°C (59°F).

Find more detailed climate information for Indiana in March here.

In April the weather in Indiana ranges from mixed in Merrillville to good in Indianapolis. The temperatures range from moderate in Michigan City with 14°C (57°F) to pleasant in Clarksville with 21°C (70°F).

Find more detailed climate information for Indiana in April here.

In May the weather in Indiana is generally very good. The temperatures range from pleasant in Michigan City with 21°C (70°F) to high in Evansville with 25°C (77°F).

Find more detailed climate information for Indiana in May here.

In June the weather in Indiana is generally very good. June is a summer month. The temperatures range from high in Michigan City with 25°C (77°F) to very high in Evansville with 31°C (88°F).

Find more detailed climate information for Indiana in June here.

In July the weather in Indiana is generally very good. July is a summer month. The temperatures range from high in Michigan City with 27°C (81°F) to very high in Evansville with 31°C (88°F). On average, this month is one of the warmest months of the year in Indiana. So be prepared and make sure to dress lightly.

Find more detailed climate information for Indiana in July here.

In August the weather in Indiana ranges from very good in Merrillville to excellent in Indianapolis. August is a summer month. The temperatures range from high in Michigan City with 27°C (81°F) to very high in Evansville with 32°C (90°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Indiana in August here.

In September the weather in Indiana ranges from very good in Merrillville to excellent in Indianapolis. The average maximum daytime temperatures are high and range from 23°C (73°F) in Michigan City to 28°C (82°F) in Evansville.

Find more detailed climate information for Indiana in September here.

In October the weather in Indiana ranges from mixed in Valparaiso to very good in Indianapolis. The temperatures range from moderate in Michigan City with 16°C (61°F) to pleasant in Evansville with 21°C (70°F).

Find more detailed climate information for Indiana in October here.

In November the weather in Indiana ranges from less favorable in Merrillville to mixed in Indianapolis. The temperatures range from low in Howe with 9°C (48°F) to moderate in Clarksville with 14°C (57°F).

Find more detailed climate information for Indiana in November here.

In December the weather in Indiana is generally less favorable. December is a winter month. The average maximum daytime temperatures are low and range from 3°C (37°F) in Howe to 9°C (48°F) in Clarksville.

Find more detailed climate information for Indiana in December here.