October Weather in Butte, United States

Last updated: June 24, 2025

In Butte, United States, the average temperature in October hovers around 1°C (33°F), with lows plunging to -15°C (6°F) and highs reaching up to 15°C (59°F). Expect significant precipitation, averaging 173 mm (6.8 in) over the course of 19 days, coupled with a high average humidity of 91%. Prepare for a chilly and damp month!

October Temperature in Butte

In October in Butte, the average temperature is 1°C (33°F). Maximums can reach 15°C (59°F), and minimums can be as low as -15°C (6°F). Travelers should be prepared for chilly conditions and fluctuations in temperature, making warm clothing essential for any outdoor activities.

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

The chart illustrates October temperature patterns in Butte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Butte, October typically has an average temperature of 1°C (33°F), with highs reaching up to 15°C (59°F) and lows dropping to around -15°C (6°F).

Data source: Temperature data for Butte generated using information from the Copernicus Climate Change Service.

October Precipitation in Butte

In Butte in October, the precipitation amount is 173 mm (6.8 in) over a span of 19 days.

October Precipitation Trends in Butte

The chart displays monthly precipitation patterns in Butte, 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 Butte, October typically receives around 173 mm (6.8 inches) of precipitation spread over approximately 19 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Butte

In Butte in October humidity is 91%. With an average temperature of 1°C (33°F), this humidity feels like a bone-chilling dampness that seeps into your clothing, making it feel much colder as you travel.

October Average Humidity in Butte

This chart illustrates the average monthly humidity levels in Butte, 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 Butte is approximately 91%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Butte

In Butte in October, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Butte, you can visit Hourly UV Index in Butte.

Maximum UV Index Levels in Butte for October

The chart shows the monthly maximum UV Index (UVI) for Butte 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 Butte typically reaches 2, which falls under the low exposure category.

Data source: Butte 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 Butte Compares to Other Months

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

This table compares monthly weather conditions in Butte, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-12°C (11°F)	80 mm (3.1 inches)	94%	low
February Weather	-10°C (15°F)	74 mm (2.9 inches)	93%	low
March Weather	-7°C (20°F)	72 mm (2.8 inches)	91%	moderate
April Weather	0°C (33°F)	54 mm (2.1 inches)	85%	moderate
May Weather	5°C (42°F)	75 mm (2.9 inches)	88%	high
June Weather	11°C (51°F)	83 mm (3.3 inches)	95%	high
July Weather	13°C (56°F)	89 mm (3.5 inches)	102%	high
August Weather	12°C (53°F)	137 mm (5.4 inches)	100%	moderate
September Weather	7°C (45°F)	127 mm (5.0 inches)	96%	moderate
October Weather	1°C (33°F)	173 mm (6.8 inches)	91%	low
November Weather	-9°C (17°F)	114 mm (4.5 inches)	95%	low
December Weather	-8°C (17°F)	142 mm (5.6 inches)	96%	low