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October Weather in Lewiston, United States

Last updated: June 24, 2025

The average temperature in Lewiston, United States during October is a brisk 6°C (43°F). Temperatures can vary significantly, with a minimum dipping to -17°C (2°F) and a maximum soaring to 24°C (75°F). Expect 49 mm (1.9 in) of precipitation spread over 8 days, contributing to an average humidity level of 67%.

October Temperature in Lewiston

In October, in Lewiston, the average temperature is 6°C (43°F). The maximum can reach 24°C (75°F) and the minimum can be as low as -17°C (2°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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 6°C (43°F), with highs reaching up to 24°C (75°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec232534404962716959433323
Data source: Temperature data for Lewiston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Lewiston

In Lewiston in October, the precipitation amount is 49 mm (1.9 in) spread over 8 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 49 mm (1.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec698963786631182336495659
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Lewiston

In Lewiston in October humidity is 67%. With an average temperature of 6°C (43°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor exploration somewhat uncomfortable and prompting a need for warm, moisture-wicking clothing 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 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%84%75%62%56%44%37%46%67%84%88%
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 is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Lewiston, you can refer to this 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 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35810111211119653
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.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)68 mm (2.7 inches)91%moderate
February Weather-4°C (25°F)89 mm (3.5 inches)92%moderate
March Weather1°C (34°F)63 mm (2.5 inches)84%very high
April Weather4°C (40°F)78 mm (3.1 inches)74%very high
May Weather9°C (49°F)66 mm (2.6 inches)62%extreme
June Weather17°C (62°F)31 mm (1.2 inches)56%extreme
July Weather22°C (71°F)17 mm (0.7 inches)44%extreme
August Weather20°C (69°F)23 mm (0.9 inches)37%extreme
September Weather15°C (59°F)36 mm (1.4 inches)46%very high
October Weather6°C (43°F)49 mm (1.9 inches)67%high
November Weather0°C (33°F)56 mm (2.2 inches)84%moderate
December Weather-5°C (23°F)59 mm (2.3 inches)88%moderate

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