October Weather in Lewiston, United States

Last updated: June 24, 2025

In October, the average temperature in Lewiston, United States hovers around 9°C (49°F). Expect a temperature range where the minimum can dip to -8°C (19°F) while the maximum can soar up to 30°C (86°F). This month brings about 121 mm (4.8 in) of precipitation spread over 12 days, contributing to an average humidity level of 79%.

October Temperature in Lewiston

In October in Lewiston, the average temperature is 9°C (49°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop to as low as -8°C (19°F). It's essential to prepare for a wide range of weather conditions when traveling during this time.

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

The chart illustrates October temperature patterns in Lewiston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lewiston, 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 -8°C (19°F).

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

October Precipitation in Lewiston

In Lewiston in October, the precipitation amount reaches 121 mm (4.8 in) over the course of 12 days.

October Precipitation Trends in Lewiston

The chart displays monthly precipitation patterns in Lewiston, 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 Lewiston, October typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 12 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 Lewiston

In Lewiston in October humidity is 79%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making it essential to dress in layers and carrying a light raincoat for a comfortable travel experience.

October Average Humidity in Lewiston

This chart illustrates the average monthly humidity levels in Lewiston, 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 Lewiston is approximately 79%, 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 Lewiston

In Lewiston 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 Lewiston.

Maximum UV Index Levels in Lewiston for October

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

Data source: Lewiston 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 Lewiston Compares to Other Months

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

This table compares monthly weather conditions in Lewiston, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	36 mm (1.4 inches)	84%	low
February Weather	-7°C (20°F)	49 mm (1.9 inches)	85%	moderate
March Weather	1°C (35°F)	57 mm (2.2 inches)	84%	moderate
April Weather	7°C (44°F)	86 mm (3.4 inches)	83%	very high
May Weather	15°C (59°F)	153 mm (6.0 inches)	75%	very high
June Weather	21°C (71°F)	157 mm (6.2 inches)	79%	very high
July Weather	23°C (74°F)	106 mm (4.2 inches)	75%	very high
August Weather	21°C (70°F)	129 mm (5.1 inches)	69%	very high
September Weather	18°C (64°F)	115 mm (4.5 inches)	74%	very high
October Weather	9°C (49°F)	121 mm (4.8 inches)	79%	moderate
November Weather	1°C (34°F)	53 mm (2.1 inches)	88%	moderate
December Weather	-4°C (26°F)	43 mm (1.7 inches)	82%	low