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October Weather in Idaho Falls, United States

Last updated: June 24, 2025

In October, the average temperature in Idaho Falls, United States hovers around 7°C (45°F). While you may experience minimum temperatures dipping to -19°C (-2°F), the mercury can also rise to a maximum of 26°C (79°F). Expect 39 mm (1.5 in) of precipitation over approximately 7 days, accompanied by an average humidity of 69%.

October Temperature in Idaho Falls

In October in Idaho Falls, the average temperature is 7°C (45°F). The maximum can reach 26°C (79°F) and the minimum can be as low as -19°C (-2°F). Be prepared for a wide range of temperatures, so pack accordingly to enjoy your travels comfortably!

October Weather in Idaho Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Idaho Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Idaho Falls, October typically has an average temperature of 7°C (45°F), with highs reaching up to 26°C (79°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec242737455464737161453526
Data source: Temperature data for Idaho Falls 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 Idaho Falls

In Idaho Falls in October, the precipitation amount is 39 mm (1.5 in) over the course of 7 days.

October Precipitation Trends in Idaho Falls

The chart displays monthly precipitation patterns in Idaho Falls, 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 Idaho Falls, October typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec404843555831111627393241
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Idaho Falls

In Idaho Falls in October humidity is 69%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that can cling to your skin, making outdoor exploration less comfortable and prompting travelers to bundle up while navigating the sights.

October Average Humidity in Idaho Falls

This chart illustrates the average monthly humidity levels in Idaho Falls, 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 Idaho Falls is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%95%90%81%71%64%59%49%52%69%86%91%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Idaho Falls

In Idaho Falls 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 Idaho Falls, you can refer to this Hourly UV Index in Idaho Falls.

Maximum UV Index Levels in Idaho Falls for October

The chart shows the monthly maximum UV Index (UVI) for Idaho Falls 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 Idaho Falls typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578101111109643
Data source: Idaho Falls 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 Idaho Falls Compares to Other Months

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

This table compares monthly weather conditions in Idaho Falls, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)40 mm (1.6 inches)95%moderate
February Weather-3°C (27°F)48 mm (1.9 inches)95%moderate
March Weather3°C (37°F)43 mm (1.7 inches)90%high
April Weather7°C (45°F)55 mm (2.2 inches)81%very high
May Weather12°C (54°F)58 mm (2.3 inches)71%very high
June Weather18°C (65°F)31 mm (1.2 inches)64%extreme
July Weather23°C (74°F)11 mm (0.4 inches)59%extreme
August Weather21°C (71°F)16 mm (0.6 inches)49%very high
September Weather16°C (61°F)26 mm (1.0 inches)52%very high
October Weather7°C (45°F)39 mm (1.5 inches)69%high
November Weather2°C (36°F)32 mm (1.3 inches)86%moderate
December Weather-4°C (26°F)41 mm (1.6 inches)91%moderate

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