October Weather in Lewiston, United States

Last updated: June 24, 2025

In October, the average temperature in Lewiston, United States is a cool 9°C (48°F). Expect quite a range, as the mercury can dip to a chilly -5°C (24°F) at night, while basking in the warmth of up to 27°C (81°F) during the day. Be prepared for rainfall, with a total precipitation of 116 mm (4.6 in) spread over 15 days. Additionally, the air will feel quite humid, with an average humidity of 85%.

October Temperature in Lewiston

In October in Lewiston, the average temperature is 9°C (48°F). Maximums can reach 27°C (81°F), while minimums can drop as low as -5°C (24°F). Be prepared for a range of weather conditions when traveling to Lewiston this month.

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 (48°F), with highs reaching up to 27°C (81°F) and lows dropping to around -5°C (24°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 total precipitation amount is 116 mm (4.6 in), occurring over a span of 15 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 116 mm (4.6 inches) of precipitation spread over approximately 15 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 Lewiston

In Lewiston in October humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.

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 85%, 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	-7°C (20°F)	49 mm (1.9 inches)	92%	low
February Weather	-6°C (21°F)	55 mm (2.1 inches)	91%	moderate
March Weather	-1°C (30°F)	55 mm (2.2 inches)	87%	moderate
April Weather	5°C (41°F)	94 mm (3.7 inches)	85%	high
May Weather	13°C (55°F)	101 mm (4.0 inches)	79%	very high
June Weather	18°C (65°F)	105 mm (4.1 inches)	75%	very high
July Weather	21°C (70°F)	87 mm (3.4 inches)	75%	very high
August Weather	20°C (68°F)	95 mm (3.7 inches)	75%	very high
September Weather	16°C (60°F)	69 mm (2.7 inches)	79%	high
October Weather	9°C (48°F)	116 mm (4.6 inches)	85%	moderate
November Weather	1°C (34°F)	62 mm (2.4 inches)	88%	moderate
December Weather	-3°C (27°F)	64 mm (2.5 inches)	89%	low