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October Weather in Bloomington, United States

Last updated: June 24, 2025

In October, the average temperature in Bloomington, United States hovers around 15°C (59°F). Be prepared for a temperature range that can drop to a chilly -2°C (29°F) or soar up to a sweltering 34°C (93°F). Expect 101 mm (4.0 in) of precipitation over approximately 11 days, with an average humidity level of 76%.

October Temperature in Bloomington

In October in Bloomington, the average temperature is 15°C (59°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as -2°C (29°F). This variability in temperature makes it essential for travelers to pack a mix of warm and cool weather clothing to enjoy their visit comfortably.

October Weather in Bloomington: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Bloomington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bloomington, October typically has an average temperature of 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec323544536574777570584337
Data source: Temperature data for Bloomington generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Bloomington

In Bloomington in October, the precipitation amount is 101 mm (4.0 in) spread over 11 days.

October Precipitation Trends in Bloomington

The chart displays monthly precipitation patterns in Bloomington, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Bloomington, October typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec871061301151311321111007310210896
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Bloomington

In Bloomington in October humidity is 76%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities less enjoyable and often leading to a quick sense of fatigue while traveling.

October Average Humidity in Bloomington

This chart illustrates the average monthly humidity levels in Bloomington, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Bloomington is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Bloomington

In Bloomington in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Bloomington, you can refer to this Hourly UV Index in Bloomington.

Maximum UV Index Levels in Bloomington for October

The chart shows the monthly maximum UV Index (UVI) for Bloomington in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Bloomington typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Bloomington October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Bloomington Compares to Other Months

Weather in Bloomington varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Bloomington, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bloomington, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)87 mm (3.4 inches)87%moderate
February Weather2°C (36°F)106 mm (4.2 inches)85%moderate
March Weather7°C (45°F)130 mm (5.1 inches)86%high
April Weather12°C (53°F)115 mm (4.5 inches)84%very high
May Weather18°C (65°F)131 mm (5.2 inches)79%very high
June Weather23°C (74°F)131 mm (5.2 inches)82%extreme
July Weather25°C (77°F)111 mm (4.4 inches)79%very high
August Weather24°C (75°F)100 mm (3.9 inches)70%very high
September Weather21°C (71°F)73 mm (2.9 inches)69%very high
October Weather15°C (59°F)101 mm (4.0 inches)76%high
November Weather6°C (43°F)108 mm (4.3 inches)88%moderate
December Weather3°C (38°F)96 mm (3.8 inches)87%moderate

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