October Weather in Alta, United States

Last updated: June 24, 2025

In Alta, United States, the average temperature in October hovers around 12°C (55°F). Expect a range between a chilly -1°C (30°F) and a balmy 32°C (89°F). During this month, precipitation reaches approximately 77 mm (3.0 in) over the course of 3 days, while the average humidity sits comfortably at 65%. Prepare appropriately for this varied climate!

October Temperature in Alta

In October in Alta, the average temperature is 12°C (55°F). The maximum can reach 32°C (89°F), while the minimum can drop as low as -1°C (30°F). This wide temperature range makes it essential for travelers to pack layers to ensure comfort throughout the day.

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

The chart illustrates October temperature patterns in Alta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alta, October typically has an average temperature of 12°C (55°F), with highs reaching up to 32°C (89°F) and lows dropping to around -1°C (30°F).

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

October Precipitation in Alta

In Alta in October, the precipitation amount is 77 mm (3.0 in) over the course of 3 days.

October Precipitation Trends in Alta

The chart displays monthly precipitation patterns in Alta, 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 Alta, October typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 3 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 Alta

In Alta in October, humidity is 65%. With an average temperature of 12°C (55°F), this humidity feels like a cool, damp embrace that can make exploring outdoors a refreshing yet slightly heavy experience, requiring travelers to dress in layers to stay comfortable while enjoying the sights.

October Average Humidity in Alta

This chart illustrates the average monthly humidity levels in Alta, 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 Alta is approximately 65%, 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 Alta

In Alta in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Alta.

Maximum UV Index Levels in Alta for October

The chart shows the monthly maximum UV Index (UVI) for Alta 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 Alta typically reaches 7, which falls under the high exposure category.

Data source: Alta 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 Alta Compares to Other Months

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

This table compares monthly weather conditions in Alta, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	289 mm (11.4 inches)	84%	moderate
February Weather	4°C (40°F)	295 mm (11.6 inches)	84%	moderate
March Weather	5°C (42°F)	284 mm (11.2 inches)	83%	very high
April Weather	9°C (49°F)	140 mm (5.5 inches)	81%	very high
May Weather	13°C (56°F)	90 mm (3.5 inches)	74%	extreme
June Weather	19°C (66°F)	20 mm (0.8 inches)	64%	extreme
July Weather	23°C (74°F)	3 mm (0.1 inches)	44%	extreme
August Weather	22°C (72°F)	6 mm (0.2 inches)	36%	very high
September Weather	18°C (65°F)	25 mm (1.0 inches)	44%	very high
October Weather	12°C (55°F)	77 mm (3.0 inches)	65%	high
November Weather	8°C (46°F)	163 mm (6.4 inches)	84%	moderate
December Weather	4°C (39°F)	225 mm (8.8 inches)	83%	moderate