October Weather in Umatilla, United States

Last updated: June 24, 2025

In Umatilla, United States, the average temperature in October hovers around 25°C (77°F), creating a pleasant atmosphere. During this time, you can expect the minimum temperature to drop as low as 7°C (44°F), while the maximum can rise to a warm 33°C (92°F). With an average precipitation amount of 80 mm (3.1 in) spread over 12 days, the humidity levels are generally high at 81%, contributing to the region's lush environment.

October Temperature in Umatilla

In October in Umatilla, the average temperature is 25°C (77°F). Maximums can reach 33°C (92°F), and minimums can be as low as 7°C (44°F). Be sure to pack layers to comfortably enjoy both the warm days and cool nights during your travels!

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

The chart illustrates October temperature patterns in Umatilla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Umatilla, October typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (92°F) and lows dropping to around 7°C (44°F).

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

October Precipitation in Umatilla

In Umatilla in October, the total precipitation amount is 80 mm (3.1 in) spread over 12 days.

October Precipitation Trends in Umatilla

The chart displays monthly precipitation patterns in Umatilla, 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 Umatilla, October typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 12 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 Umatilla

In Umatilla in October, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

October Average Humidity in Umatilla

This chart illustrates the average monthly humidity levels in Umatilla, 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 Umatilla is approximately 81%, 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 Umatilla

In Umatilla in October, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Umatilla.

Maximum UV Index Levels in Umatilla for October

The chart shows the monthly maximum UV Index (UVI) for Umatilla 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 Umatilla typically reaches 9, which falls under the very high exposure category.

Data source: Umatilla 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 Umatilla Compares to Other Months

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

This table compares monthly weather conditions in Umatilla, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (59°F)	47 mm (1.9 inches)	83%	moderate
February Weather	18°C (65°F)	57 mm (2.2 inches)	80%	very high
March Weather	19°C (67°F)	25 mm (1.0 inches)	75%	very high
April Weather	22°C (72°F)	80 mm (3.2 inches)	70%	extreme
May Weather	25°C (77°F)	97 mm (3.8 inches)	68%	extreme
June Weather	27°C (81°F)	190 mm (7.5 inches)	75%	extreme
July Weather	27°C (82°F)	221 mm (8.7 inches)	79%	extreme
August Weather	28°C (82°F)	203 mm (8.0 inches)	81%	extreme
September Weather	27°C (81°F)	153 mm (6.0 inches)	83%	extreme
October Weather	25°C (77°F)	80 mm (3.1 inches)	81%	very high
November Weather	19°C (67°F)	58 mm (2.3 inches)	82%	high
December Weather	17°C (62°F)	71 mm (2.8 inches)	84%	moderate