The best times to visit Southern Indiana for ideal weather are

April 16th to June 17th

or

August 6th to October 21st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Southern Indiana Travel Info

Weather in Southern Indiana

Temperature

Average temperatures in Southern Indiana vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 46th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Southern Indiana, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 88.2°F (31.2°C) with temperatures rarely dropping below 67.4°F (19.7°C) at night.

Southern Indiana Temperatures (Fahrenheit)

Key
High
Average
Low

Southern Indiana Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Southern Indiana Perceived Temperature (F)

Key
High
Average
Low

Southern Indiana Perceived Temperature (C)

Key
High
Average
Low

 

Average Southern Indiana Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
Jan40.231.123.4
Feb42.432.824.8
Mar57.846.537.4
Apr6956.846.4
May77.366.356.6
Jun8674.864.6
Jul87.17666.1
Aug87.375.464.6
Sep81.469.158.9
Oct6956.846.6
Nov56.545.635.9
Dec46.237.630.2

Show Celsius

MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
Jan4.6-0.5-4.8
Feb5.80.4-4
Mar14.38.13
Apr20.613.88
May25.219.113.7
Jun3023.818.1
Jul30.624.418.9
Aug30.724.118.1
Sep27.420.614.9
Oct20.613.88.1
Nov13.67.62.2
Dec7.93.1-1

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Southern Indiana are October, August, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid March. For example, on the week of March 19th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late April with an average of 2 days of significant precipitation the week of April 23rd.

When can you find snow in Southern Indiana? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Southern Indiana.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Southern Indiana (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
Jan4%00.7
Feb5%00.6
Mar7%01.4
Apr13%03.3
May9%01.7
Jun11%01.8
Jul9%01.9
Aug4%00.5
Sep8%01.8
Oct4%01.1
Nov8%01
Dec9%02

Show Centimeters

MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
Jan401.8
Feb501.5
Mar703.6
Apr1308.4
May904.3
Jun1104.6
Jul904.8
Aug401.3
Sep804.6
Oct402.8
Nov802.5
Dec905.1

 

Humidity and Wind

Southern Indiana has some high humidity months, with other comfortably humid months. The least humid month is April (53% relative humidity), and the most humid month is December (67.9%).

Wind in Southern Indiana is usually calm. The windiest month is April, followed by January and March. April’s average wind speed of around 7.8 knots (9 MPH or 14.5 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 17.2 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Southern Indiana.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
Jan7.8Gentle breeze15.2Significant breeze
Feb7.6Gentle breeze15.4Significant breeze
Mar7.7Gentle breeze15.2Significant breeze
Apr7.8Gentle breeze16.2Significant breeze
May6.2Light breeze13.6Significant breeze
Jun5.7Light breeze13.2Significant breeze
Jul4.5Light breeze11.3Significant breeze
Aug4.4Light breeze10.7Gentle breeze
Sep4.9Light breeze11.7Significant breeze
Oct6.2Light breeze13.2Significant breeze
Nov6.9Light breeze13.9Significant breeze
Dec7.3Gentle breeze14.2Significant breeze

Show Relative Humidity by Month

MonthAvg. Relative Humidity
Jan63.2%
Feb59.9%
Mar55.6%
Apr53%
May61.8%
Jun61.8%
Jul66.6%
Aug63.4%
Sep61.1%
Oct57.5%
Nov57.4%
Dec67.9%

 

Is it Safe to Travel to Southern Indiana?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Southern Indiana, the United States is June, followed by July and April. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Southern Indiana in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 40.4 in November means 40.4% of the tourists vs. June.

 

 

Overall Southern Indiana Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 82.6°F (28.1°C) and 46.6°F (8.1°C) with warmer temperatures in the later months. Rain is rare with 2 to 4 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 1 to 3 days of precipitation per month. June – August is the busiest season for tourism in Southern Indiana, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 84.3°F (29.1°C) and 51°F (10.6°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 1 to 2 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Southern Indiana to be enjoyable for warm weather travelers. The average high during this season is between 46.6°F (8.1°C) and 38.8°F (3.8°C). On average, it rains or snows a smalll amount: 1 to 3 times per month. These times of year are fairly slow with tourists.

 

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