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Indianapolis weather

Indiana · 887,642 inhabitants · Thursday, October 29 · updated 19:05

Air: Good

25°

Clear sky

Feels like 26°C

Wind

17 km/h

Gusts

28 km/h

Humidity

36 %

Pressure

1019 hPa

Clouds

5 %

Storm

Rise 08:10 Set 18:46 Day 10 h 36 min UV 6 · Moderate

Morning, afternoon, evening

Trend

Evening

Partly cloudy

21°19°

Feels like 23°

Wind ↑ N 11 km/h

Gusts 23 km/h

Humidity 57 %

Indianapolis forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +9.1° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Indianapolis climate: what a normal year looks like

The hottest stretch is July, when afternoons average 29 °C; the coldest is January, when nights average −6 °C. Between those two months the average temperature changes by 27 °C.

Nights typically freeze from December to February, the coldest averaging −6 °C in January.

From 14 h 59 min of daylight in late June to 9 h 21 min in late December.

There is no real dry season: monthly rainfall stays between 72 mm and 125 mm on average.

Forecast highs for the coming week average 21 °C, 3 °C warmer than a normal October (18 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	1 °C	−6 °C	85 mm
Feb	4 °C	−4 °C	72 mm
Mar	10 °C	1 °C	100 mm
Apr	17 °C	7 °C	123 mm
May	22 °C	13 °C	125 mm
Jun	27 °C	17 °C	112 mm
Jul	29 °C	20 °C	94 mm
Aug	28 °C	18 °C	75 mm
Sep	25 °C	14 °C	75 mm
Oct	18 °C	8 °C	85 mm
Nov	11 °C	3 °C	90 mm
Dec	4 °C	−3 °C	83 mm
Whole year	16 °C	7 °C	1,120 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 39.77° N, 86.16° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Indianapolis: pollution and pollen

1/6

Good

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.56µg/m³

PM106µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Indianapolis

Rain observed over the last two hours by official weather radars around Indianapolis, followed by the radar forecast for the next hour where the weather service provides one.

Full-screen rain radar and next-hour rain on RainAtlas

Rain radar Last two hours, then forecast where available · drag the timeline

Moon over Indianapolis

Waning gibbous

87 % illuminated · 18.3 days

Rise 17:08 Set 08:26

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Moonrise and moonset in local time (America/Indiana/Indianapolis); phase and lit fraction from a synodic calculation.

Look up a past day in Indianapolis

Curious about the weather in Indianapolis on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Indianapolis weather at a glance

This page gathers everything about the weather in Indianapolis, Indiana: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “clear sky”, it is 25 °C (feels like 26 °C) and the wind blows at 17 km/h.

Expected range today: 13 °C to 25 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Cincinnati 158 km 25°

Louisville 172 km 25°

Lexington-Fayette 241 km 24°

Lexington 246 km 24°

Indianapolis weather data for developers

Use the Indianapolis forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

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Where does this forecast come from? Our engine, checked every day against 1125 weather stations