Indianapolis Weather Forecast
Indianapolis weather: 64°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Climate in Indianapolis month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 32° | 19° | 2,7 in | ★★☆☆☆ |
| February | 44° | 26° | 1,7 in | ★★★☆☆ |
| March | 58° | 38° | 5,2 in | ★★★☆☆ |
| April | 66° | 47° | 6,3 in | ★★★☆☆ |
| May | 72° | 54° | 4,5 in | ★★★★☆ |
| June | 83° | 65° | 5,5 in | ★★★★☆ |
| July | 86° | 69° | 4,3 in | ★★★★☆ |
| August | 83° | 65° | 2,3 in | ★★★★☆ |
| September | 80° | 60° | 2,7 in | ★★★★☆ |
| October | 68° | 49° | 2,1 in | ★★★★☆ |
| November | 53° | 38° | 2,6 in | ★★★☆☆ |
| December | 43° | 29° | 3,1 in | ★★☆☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
Best time to visit Indianapolis
Go in July, August, September and October. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Recent extremes in Indianapolis
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Indianapolis compares with nearby places
Annual averages, and the difference against Indianapolis.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Louisville | 107 mi | 58°F | +35°F warmer | 48 in |
| Kentucky | 128 mi | 57°F | +34°F warmer | 47 in |
| Indiana Dunes National Park | 138 mi | 52°F | 35°F cooler | 42 in |
| Cook County | 165 mi | 52°F | 35°F cooler | 40 in |
| Chicago | 165 mi | 52°F | 35°F cooler | 40 in |
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the Indianapolis forecast by time range
Indianapolis weather - more answers
Explore Indianapolis
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Indianapolis?
Indianapolis is a city in Indiana. Its coordinates are 39.7684, -86.1581. It lies in North America.
What is the weather like in Indianapolis right now?
It is currently 64°F (18°C) with clear. Humidity is 82% and wind is 4 mph.
When is the best time to visit Indianapolis?
July, August, September and October offer the most comfortable conditions in Indianapolis, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Indianapolis in?
Indianapolis observes America/Indiana/Indianapolis (UTC-04:00). The local time is 3:44 PM.
How many people live in Indianapolis?
Indianapolis has a population of approximately 880.000.
What is the nearest airport to Indianapolis?
The closest airports are O'Hare International Airport (ORD), 178 mi away and Nashville International Airport (BNA), 253 mi away.
What are the top things to do in Indianapolis?
Popular options include Indiana Dunes National Park, Mammoth Cave National Park, Starved Rock State Park, Hocking Hills State Park, Cumberland Falls State Resort Park and Gateway Arch National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 24, 2026 at 3:44 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
