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When is the best time to visit Indianapolis?
In general the best time to visit Indianapolis is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
The best time to visit may differ depending on what you are looking for:
- The best time for a sun tanning holiday is June, July, August. Average maximum temperatures are up to +84°F in August and it has 6 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during April - October.
- If you want to avoid wet weather, then your choice is January, August, December with the lowest chance of rain.
Average weather in Indianapolis in different months
This is the average weather in Indianapolis for each month based on historic data:
April, May, June, July, August, September, October usually has good weather. Average maximum temperature reaches +84°F during July.
In January, February, March, November, December the weather is average. Expect around 39 rainy days, and the precipitation amounts to approximately 83 mm in March.
Climate in Indianapolis
Here is the detailed breakdown of the climate in Indianapolis for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +66°F | +77°F | +82°F | +86°F | +95°F | +104°F | +102°F | +99°F | +99°F | +91°F | +79°F | +70°F |
| Average Maximum Temperature | |||||||||||
| +36°F | +41°F | +52°F | +64°F | +73°F | +82°F | +84°F | +84°F | +77°F | +66°F | +52°F | +41°F |
| Minimum Temperature | |||||||||||
| -24°F | -11°F | -8°F | +19°F | +30°F | +39°F | +50°F | +45°F | +32°F | +23°F | +9°F | -18°F |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 76 | 74 | 70 | 66 | 69 | 70 | 72 | 74 | 72 | 72 | 73 | 78 |
| Rain, mm | |||||||||||
| 45 | 46 | 83 | 107 | 115 | 95 | 93 | 79 | 69 | 81 | 79 | 60 |
| Snow, mm | |||||||||||
| 25 | 24 | 13 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 18 |
| Average wind speed, m/s | |||||||||||
| 4 | 4 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 |
| Sunny Days | |||||||||||
| 3 | 3 | 4 | 4 | 4 | 4 | 5 | 6 | 8 | 8 | 5 | 3 |
| Cloud Days | |||||||||||
| 15 | 13 | 12 | 9 | 9 | 10 | 9 | 9 | 10 | 11 | 13 | 14 |
| Rainy Days | |||||||||||
| 5 | 5 | 11 | 16 | 16 | 14 | 15 | 13 | 10 | 12 | 10 | 8 |
| Snowy Days | |||||||||||
| 8 | 7 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 |
Average Temperature
Here are the average maximum and minimum temperatures in Indianapolis during the whole year:
The hottest month in Indianapolis is August with average maximum temperature going up to +84°F. The coldest month is January with the lowest temperatures of +23°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Indianapolis looks throughout the year, in %:
The most humid month in Indianapolis is December with average humidity going up to 78%. The least humid month is April with an average humidity of 66%.
Rain
Amount of rainfall in mm. in Indianapolis during the whole year based on historical data:
The sunniest and driest month is September with approximately 8 sunny days and a total precipitation of around 69 mm. The rainiest and wettest month is May with approximately 16 rainy days and 115 mm of total precipitation.
Snow
Amount of snow in mm. in Indianapolis during the whole year based on historical data:
The snowiest month is January with approximately 8 snowy days.
FAQ
Frequently asked questions about the weather in Indianapolis:
What is the hottest month in Indianapolis?
The hottest month in Indianapolis is August with average maximum temperature of +84°F.
What is the coldest month in Indianapolis?
The coldest month in Indianapolis is January with minimum temperatures of +23°F.
Is Indianapolis worth visiting in winter?
Winter in Indianapolis could be a good time to visit, as the weather is generally ok.
When does it rain the least in Indianapolis?
if you're looking to visit Indianapolis when it rains the least, you should plan your trip for May, April, June. During this time, rainfall is rare with the driest month being January with only 45 mm of rain.
Other cities in USA
Check out the weather for other cities in USA.
Monthly weather in Indianapolis
Source of the data
For this page, we’ve looked at the typical weather in Indianapolis, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.