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October Weather in Watertown, United States

Last updated: June 24, 2025

In Watertown, United States, the average temperature in October hovers around 11°C (51°F). While the mercury can dip as low as -5°C (23°F), it can also soar up to a toasty 30°C (85°F). Expect some rain, with 114 mm (4.5 in) falling over 13 days on average. Additionally, the air is quite humid, with an average humidity level of 83%.

October Temperature in Watertown

In October in Watertown, the average temperature is 11°C (51°F). The maximum can reach 30°C (85°F), while the minimum can drop as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures, making layered clothing essential during this month.

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

The chart illustrates October temperature patterns in Watertown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Watertown, October typically has an average temperature of 11°C (51°F), with highs reaching up to 30°C (85°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec212335455970747165513629
Data source: Temperature data for Watertown 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 Watertown

In Watertown in October, the total precipitation amount is 114 mm (4.5 in), distributed over the course of 13 days.

October Precipitation Trends in Watertown

The chart displays monthly precipitation patterns in Watertown, 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 Watertown, October typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec51495710312111310294991144345
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Watertown

In Watertown in October, humidity is 83%. With an average temperature of 11°C (51°F), this humidity feels like a chilly dampness that clings to your skin, making any outdoor adventures a bit uncomfortable and best enjoyed with layered clothing and a light raincoat.

October Average Humidity in Watertown

This chart illustrates the average monthly humidity levels in Watertown, 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 Watertown is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Watertown

In Watertown 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 Watertown.

Maximum UV Index Levels in Watertown for October

The chart shows the monthly maximum UV Index (UVI) for Watertown 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 Watertown typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101098532
Data source: Watertown 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 Watertown Compares to Other Months

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

This table compares monthly weather conditions in Watertown, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)51 mm (2.0 inches)85%moderate
February Weather-5°C (23°F)49 mm (1.9 inches)85%moderate
March Weather2°C (36°F)57 mm (2.3 inches)85%moderate
April Weather7°C (46°F)103 mm (4.1 inches)85%very high
May Weather15°C (59°F)121 mm (4.8 inches)78%very high
June Weather21°C (70°F)113 mm (4.5 inches)80%very high
July Weather23°C (74°F)102 mm (4.0 inches)78%very high
August Weather22°C (71°F)94 mm (3.7 inches)76%very high
September Weather18°C (65°F)99 mm (3.9 inches)79%very high
October Weather11°C (51°F)114 mm (4.5 inches)83%moderate
November Weather2°C (37°F)43 mm (1.7 inches)88%moderate
December Weather-2°C (30°F)45 mm (1.8 inches)81%low

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