Indianapolis Weather Forecast
Indianapolis weather: 82°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for Indianapolis
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Thu, Sep 17 | 🌤️ Mainly clear | 91° / 72° | 13% | 12 mph | 6 |
| Fri, Sep 18 | 🌧️ Heavy rain | 78° / 67° | 18% · 0,9 in | 10 mph | 3 |
| Sat, Sep 19 | 🌦️ Light drizzle | 80° / 63° | 48% · 0,1 in | 7 mph | 6 |
| Sun, Sep 20 | 🌦️ Light drizzle | 89° / 70° | 48% · 0,0 in | 11 mph | 5 |
| Mon, Sep 21 | 🌧️ Showers | 71° / 62° | 39% · 0,7 in | 10 mph | 4 |
| Tue, Sep 22 | 🌦️ Drizzle | 64° / 56° | 36% · 0,1 in | 9 mph | 2 |
| Wed, Sep 23 | ☁️ Overcast | 66° / 55° | 6% | 10 mph | 6 |
| Thu, Sep 24 | ☁️ Overcast | 65° / 56° | 5% | 9 mph | 4 |
| Fri, Sep 25 | ☁️ Overcast | 67° / 55° | 5% | 10 mph | 4 |
| Sat, Sep 26 | ☁️ Overcast | 72° / 55° | 5% | 8 mph | 5 |
| Sun, Sep 27 | ☁️ Overcast | 73° / 56° | 8% | 8 mph | 5 |
| Mon, Sep 28 | 🌤️ Mainly clear | 75° / 55° | 14% | 7 mph | 5 |
| Tue, Sep 29 | ☀️ Clear sky | 76° / 54° | 19% | 5 mph | 5 |
| Wed, Sep 30 | ☁️ Overcast | 74° / 58° | 13% | 11 mph | 4 |
The two-week trend
Cooling. The second half of the window averages 36°F cooler than the days immediately ahead.
The window averages 73°F against a September normal of 80°F - 38°F below.
The next 7 days carry about 2.8 times a normal week's rain for September (1,8 in against 0,6 in).
What this means for Indianapolis
Today is warmer than average for September. The forecast high of 91°F is 11.3°F above the 80°F typical for this month.
A 13% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 84°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- 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 82°F (28°C) with clear. Humidity is 76% and wind is 4 mph.
When is the best time to visit Indianapolis?
May, 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 9:43 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 September 17, 2026 at 9:43 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
