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October Weather in Calais, United States

Last updated: June 24, 2025

In October, the average temperature in Calais, United States hovers around 10°C (50°F), with a minimum dipping as low as -5°C (23°F) and a maximum peaking at 25°C (77°F). Expect frequent showers with an average precipitation of 109 mm (4.3 in) over 11 days, while the air remains quite humid with an average humidity of 82%.

October Temperature in Calais

In October in Calais, the average temperature is 10°C (50°F). The maximum can reach 25°C (77°F) and the minimum can be as low as -5°C (23°F). This makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates October temperature patterns in Calais, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calais, October typically has an average temperature of 10°C (50°F), with highs reaching up to 25°C (77°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec212330425262686860503726
Data source: Temperature data for Calais 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 Calais

In Calais in October, the precipitation amount is 109 mm (4.3 in), occurring over a span of 11 days.

October Precipitation Trends in Calais

The chart displays monthly precipitation patterns in Calais, 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 Calais, October typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec99907212010791917688109136122
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Calais

In Calais in October, humidity is 82%. With an average temperature of 10°C (50°F), this humidity feels like a dense, heavy blanket wrapping around you, making every step feel sluggish and the air thick, which can make traveling quite uncomfortable.

October Average Humidity in Calais

This chart illustrates the average monthly humidity levels in Calais, 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 Calais is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%84%82%80%78%82%84%82%82%82%84%82%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Calais

In Calais 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 Calais.

Maximum UV Index Levels in Calais for October

The chart shows the monthly maximum UV Index (UVI) for Calais 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 Calais typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Calais 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 Calais Compares to Other Months

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

This table compares monthly weather conditions in Calais, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)98 mm (3.9 inches)83%low
February Weather-5°C (23°F)90 mm (3.5 inches)84%moderate
March Weather-1°C (30°F)72 mm (2.8 inches)82%moderate
April Weather5°C (42°F)119 mm (4.7 inches)80%high
May Weather11°C (53°F)107 mm (4.2 inches)78%very high
June Weather17°C (62°F)91 mm (3.6 inches)82%very high
July Weather20°C (68°F)91 mm (3.6 inches)84%very high
August Weather20°C (68°F)76 mm (3.0 inches)82%very high
September Weather16°C (61°F)88 mm (3.5 inches)82%high
October Weather10°C (50°F)109 mm (4.3 inches)82%moderate
November Weather3°C (37°F)136 mm (5.4 inches)84%moderate
December Weather-3°C (26°F)122 mm (4.8 inches)82%low

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