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October Weather in Chelsea, United States

Last updated: June 24, 2025

In October, the average temperature in Chelsea, United States hovers around 16°C (62°F). Temperatures can fluctuate, dipping as low as -1°C (30°F) and peaking at 33°C (91°F). You'll experience about 139 mm (5.5 in) of precipitation spread over 11 days, contributing to an average humidity of 72%.

October Temperature in Chelsea

In October, in Chelsea, the average temperature is 16°C (62°F). Maximum temperatures can reach 33°C (91°F), while minimum temperatures can drop as low as -1°C (30°F). Be prepared for a wide range of weather conditions when traveling during this time.

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

The chart illustrates October temperature patterns in Chelsea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chelsea, October typically has an average temperature of 16°C (62°F), with highs reaching up to 33°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec384053596979828076625044
Data source: Temperature data for Chelsea 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 Chelsea

In Chelsea in October, the precipitation amount is 139 mm (5.5 in) occurring over a span of 11 days.

October Precipitation Trends in Chelsea

The chart displays monthly precipitation patterns in Chelsea, 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 Chelsea, October typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec766812213920410397113911395350
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Chelsea

In Chelsea in October, humidity is 72%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapped around you, making it slightly uncomfortable for traveling as you might find yourself sweating more than usual, especially during outdoor activities.

October Average Humidity in Chelsea

This chart illustrates the average monthly humidity levels in Chelsea, 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 Chelsea is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Chelsea

In Chelsea in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Chelsea.

Maximum UV Index Levels in Chelsea for October

The chart shows the monthly maximum UV Index (UVI) for Chelsea 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 Chelsea typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Chelsea 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 Chelsea Compares to Other Months

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

This table compares monthly weather conditions in Chelsea, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)76 mm (3.0 inches)77%moderate
February Weather5°C (41°F)68 mm (2.7 inches)76%high
March Weather12°C (53°F)122 mm (4.8 inches)71%high
April Weather15°C (59°F)139 mm (5.5 inches)73%very high
May Weather21°C (69°F)204 mm (8.0 inches)83%very high
June Weather26°C (79°F)103 mm (4.1 inches)83%extreme
July Weather28°C (82°F)97 mm (3.8 inches)81%extreme
August Weather27°C (80°F)113 mm (4.4 inches)73%very high
September Weather24°C (76°F)91 mm (3.6 inches)67%very high
October Weather16°C (62°F)139 mm (5.5 inches)72%high
November Weather10°C (50°F)53 mm (2.1 inches)82%moderate
December Weather7°C (44°F)50 mm (2.0 inches)85%moderate

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