Climate averages 1991–2020

Bloomington (Indiana), United States weather
in October.

A mild, moderately wet month: the 6th warmest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 18.5°C Daytime mean, October
Average low 9.5°C Night-time mean, October
Rainfall 83 mm 8 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Bloomington · average highYear overview

October is a mild month in Bloomington (Indiana), United States: daytime highs average 18.5°C and nights cool to about 9.5°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 83 mm of rain on roughly 8 days, which makes October a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 13 min on an average October day.

The nearest other city in this atlas is Indianapolis (74 km away). In October its highs average 17.7°C, 0.8°C cooler than Bloomington (Indiana), United States, with 83 mm of rain.

Among the 498 cities listed in the United States, Bloomington (Indiana), United States ranks joint 311th of 498 for the warmest October highs and joint 276th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Bloomington (Indiana), United States is 2.8°C cooler than that mean.

From October to November, average highs fall by 7.5°C to 11.0°C, and monthly rainfall rises from 83 mm to 92 mm.

The annual picture

October in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -10-505101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Bloomington (Indiana), United States climate table

1991–2020
Monthly climate averages for Bloomington (Indiana), United States, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 3.2°C-4.7°C-4.7°C879.59.810 h
February 5.7°C-3.3°C-3.3°C748.510.711 h
March 11.3°C1.4°C1.4°C10110.811.912 h
April 17.6°C7.3°C7.3°C12812.413.213 h
May 22.5°C13.0°C13.0°C13013.414.314 h
June 27.3°C17.9°C17.9°C11111.914.915 h
July 29.3°C19.9°C19.9°C8811.414.615 h
August 28.8°C19.3°C19.3°C798.913.714 h
September 25.3°C15.6°C15.6°C737.912.512 h
October, selected 18.5°C9.5°C9.5°C838.211.211 h
November 11.0°C3.2°C3.2°C928.910.110 h
December 5.2°C-1.9°C-1.9°C8610.19.59 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

October in nearby cities

Distance from Bloomington

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bloomington) is explained once on the Bloomington (Indiana), United States year overview and on the Sources, method and limits page.