October Weather in Butte, United States

Last updated: June 24, 2025

In October, the average temperature in Butte, United States hovers around 9°C (49°F), with fluctuations that can see lows of -13°C (10°F) and highs reaching up to 30°C (86°F). During this month, expect 72 mm (2.8 in) of precipitation spread over roughly 7 days, and experience a comfortable average humidity of 72%.

October Temperature in Butte

In October in Butte, the average temperature is 9°C (49°F), with maximums reaching 30°C (86°F) and minimums dropping as low as -13°C (10°F). This variability makes it essential for travelers to pack layers to prepare for both warm days and chilly nights.

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 9°C (49°F), with highs reaching up to 30°C (86°F) and lows dropping to around -13°C (10°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 total precipitation amount is 72 mm (2.8 in) over the course of 7 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 72 mm (2.8 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Butte

In Butte in October, humidity is 72%. With an average temperature of 9°C (49°F), this humidity feels like a chilly blanket wrapped around you, making travel feel damp and somewhat uncomfortable as you navigate the streets, heightening your awareness of every breeze.

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 72%, 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 reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the 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 5, which falls under the moderate 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	-5°C (23°F)	21 mm (0.8 inches)	77%	moderate
February Weather	-6°C (22°F)	22 mm (0.9 inches)	81%	moderate
March Weather	3°C (37°F)	69 mm (2.7 inches)	71%	high
April Weather	7°C (46°F)	58 mm (2.3 inches)	75%	very high
May Weather	15°C (59°F)	127 mm (5.0 inches)	74%	very high
June Weather	23°C (74°F)	69 mm (2.7 inches)	82%	extreme
July Weather	25°C (77°F)	81 mm (3.2 inches)	84%	very high
August Weather	23°C (74°F)	80 mm (3.2 inches)	82%	very high
September Weather	19°C (67°F)	68 mm (2.7 inches)	75%	very high
October Weather	9°C (49°F)	72 mm (2.8 inches)	72%	moderate
November Weather	3°C (38°F)	21 mm (0.8 inches)	81%	moderate
December Weather	-2°C (28°F)	42 mm (1.6 inches)	79%	low