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Forecast confidence: High · models disagree by 3°F

Indianapolis (Indy) weather

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Light rain,rain likely tomorrow

NWS, the American and the European model agree on a high near 80° in Indianapolis today. Tomorrow looks showers around 85°, with a 80% chance of rain.

80°72°
85°68°
86°70°
70°62°
68°59°
66°58°
Todaymodels agreeTomorrowmodels agreeSundaysplit ±7°Mondaymodels agreeTuesdaymodels agreeWednesdaysplit ±6°
NWSNational Blend (NBM)
80°
Light rain
Today 80°·Low 72°·Rain 35%
AmericanNOAA GFS
78°
Light drizzle
Today 78°·Low 72°·Rain 35%
EuropeanECMWF
81°
Showers
Today 81°·Low 71°·Rain 100%
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Indianapolis weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Indianapolis weather in numbers

from 30 years of measured normals

Indianapolis swings 59°F across the year, from 85°F highs in July to 26°F lows in January, and March is usually the wettest month in a year that brings about 42 in of precipitation.

Warmest month
July
85°F average high
Coldest month
January
26°F average low
Wettest month
March
42 in a year
Below freezing
2 months
January and February
Comfortable
3 months
April, May and October
Residents
888,000
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The weather map: all three models at once

NWS, American, European side by side around Indianapolis and nearby towns.Live rain radar →
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Indianapolis in 3D: the weather on the streets, hour by hour

Rain, sun and real shadows drawn on a 3D map of Indianapolis, 48 hours ahead. Drag the timeline, pick what you are doing or where you are going, and read the verdict for that hour.Full screen ↗

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Indianapolis hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Indianapolis 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Light rain
80° 72°
models agree
Tomorrow
Showers
85° 68°
models agree
Sun
Light drizzle
86° 70°
±7°
Mon
Drizzle
70° 62°
models agree
Tue
Light drizzle
68° 59°
models agree
Wed
Cloudy
66° 58°
±6°
Thu
Cloudy
68° 59°
±7°
Fri
Mostly clear
70° 60°
±5°
Sat
Mostly clear
72° 57°
±7°
Sun
Partly cloudy
75° 55°
±12°
Mon
Light drizzle
75° 56°
±11°
Tue
Rain
65° 56°
±11°
Wed
Drizzle
64° 50°
±4°
Thu
Cloudy
70° 50°
±7°

Indianapolis, Indiana (IN). Often shortened to Indy. Below we compare what NWS, American, European forecast for Indianapolis right now and flag exactly where they disagree, then break down Indianapolis's weather month by month and which forecast model has been most accurate here.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Indianapolis weather by month

what to expect in Indianapolis through the year

Here is Indianapolis's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Indianapolis by season.

Jan
39°
26°
Cold
Feb
50°
30°
Cool
Mar
54°
35°
Cool
Wettest
Apr
64°
44°
Mild
May
75°
55°
Warm
Jun
83°
62°
Warm
Jul
85°
66°
Hot
Aug
83°
65°
Warm
Sep
79°
60°
Warm
Oct
68°
48°
Mild
Nov
54°
38°
Cool
Dec
45°
32°
Cool

What Indianapolis's weather is like through the year

Indianapolis runs from warm summers, with July highs near 85°F, to cold winters, when January lows sit around 26°F (a swing of about 59°F across the year). March is usually the wettest month, and Indianapolis sees roughly 42 inches of precipitation annually. Overnight lows stay below freezing across 2 months (January and February), so Indianapolis sees regular winter snowfall.

Best time to visit Indianapolis

The most comfortable time to visit Indianapolis is usually April, May and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest March rain is behind you.

Which forecast is most accurate in Indianapolis?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
89
/100rank #1
95±0.5°F98±0.7 mph7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
75
/100rank #2
86±1.4°F95±1.4 mph4771% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Bottom line: over the last 30 days the European model has been the most accurate forecast for Indianapolis, scoring 89/100 on our CheckWeather Score, ahead of the American at 75. See the full US accuracy scoreboard for exactly how every model is tested.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±3°78° to 81°±65%35% to 100% chance
Tomorrow±4°83° to 87°±45%35% to 80% chance
Sun±7°83° to 90°±5%40% to 45% chance
Mon±3°69° to 71°±10%49% to 59% chance
Tue±3°66° to 69°±5%34% to 39% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Indianapolis

today, local time
Sunrise
07:28
Sunset
19:48
Daylight
12h 20m

Common questions

What's the weather in Indianapolis today?
On this page we show what NWS, American, European each forecast for Indianapolis today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Indianapolis today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Indianapolis and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Indianapolis?
Over the last 30 days, the European model has been the most accurate for Indianapolis (CheckWeather Score 89/100), ahead of the American at 75. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Indianapolis?
July is typically the warmest month in Indianapolis, with average highs around 85°F.
How cold does Indianapolis get?
The coldest month in Indianapolis is January, when overnight lows average about 26°F.
How much rain does Indianapolis get?
Indianapolis sees roughly 42 in of precipitation a year, with March usually the wettest month.
When is the best time to visit Indianapolis?
The most comfortable time to visit Indianapolis is usually April, May and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest March rain is behind you.
Does it snow in Indianapolis?
Yes - overnight lows fall below freezing across 2 months (January and February) in Indianapolis, so winter snowfall is common.

Nearby

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