October Weather in Salem, United States

Last updated: June 24, 2025

In October, the average temperature in Salem, United States is a crisp 9°C (48°F). Temperatures can fluctuate dramatically, ranging from a chilly -13°C (9°F) to a warm 29°C (85°F). Visitors should be prepared for 77 mm (3.0 in) of precipitation spread over about 8 days, with an average humidity of 72%.

October Temperature in Salem

In October in Salem, the average temperature is 9°C (48°F), with a maximum that can reach 29°C (85°F) and a minimum that can drop as low as -13°C (9°F). This wide temperature range suggests packing layers to ensure comfort during your travels.

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

The chart illustrates October temperature patterns in Salem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Salem, October typically has an average temperature of 9°C (48°F), with highs reaching up to 29°C (85°F) and lows dropping to around -13°C (9°F).

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

October Precipitation in Salem

In Salem in October, the precipitation amount is 77 mm (3.0 in) distributed over 8 days.

October Precipitation Trends in Salem

The chart displays monthly precipitation patterns in Salem, 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 Salem, October typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 8 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 Salem

In Salem in October, humidity is 72%. With an average temperature of 9°C (48°F), this humidity feels like a chilly dampness that clings to your skin, making it essential to dress in layers for traveling, as the cold and moisture can be quite uncomfortable for prolonged outdoor activities.

October Average Humidity in Salem

This chart illustrates the average monthly humidity levels in Salem, 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 Salem 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 Salem

In Salem 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 Salem.

Maximum UV Index Levels in Salem for October

The chart shows the monthly maximum UV Index (UVI) for Salem 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 Salem typically reaches 5, which falls under the moderate exposure category.

Data source: Salem 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 Salem Compares to Other Months

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

This table compares monthly weather conditions in Salem, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	18 mm (0.7 inches)	77%	low
February Weather	-7°C (19°F)	20 mm (0.8 inches)	81%	moderate
March Weather	1°C (35°F)	60 mm (2.4 inches)	71%	moderate
April Weather	7°C (44°F)	76 mm (3.0 inches)	75%	very high
May Weather	15°C (59°F)	104 mm (4.1 inches)	74%	very high
June Weather	23°C (73°F)	75 mm (2.9 inches)	82%	extreme
July Weather	24°C (76°F)	85 mm (3.4 inches)	84%	very high
August Weather	22°C (72°F)	90 mm (3.6 inches)	82%	very high
September Weather	18°C (65°F)	86 mm (3.4 inches)	75%	very high
October Weather	9°C (48°F)	77 mm (3.0 inches)	72%	moderate
November Weather	1°C (35°F)	23 mm (0.9 inches)	81%	moderate
December Weather	-4°C (26°F)	35 mm (1.4 inches)	79%	low