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August Weather in Watertown, United States

Last updated: June 24, 2025

In August, the average temperature in Watertown, United States reaches a warm 27°C (81°F). Expect temperatures to range from a comfortable 21°C (69°F) to a sizzling 38°C (100°F). With 184 mm (7.2 in) of precipitation over 23 days, be prepared for occasional rain showers. The air remains quite humid, averaging around 79%, adding to the tropical feel of the atmosphere.

August Temperature in Watertown

In August in Watertown, the average temperature is 27°C (81°F), with maximums reaching 38°C (100°F) and minimums dropping as low as 21°C (69°F). This warm climate makes Watertown an ideal destination for travelers seeking sun and outdoor activities.

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

The chart illustrates August 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, August typically has an average temperature of 27°C (81°F), with highs reaching up to 38°C (100°F) and lows dropping to around 21°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec556164697679818179746258
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.

August Precipitation in Watertown

In Watertown in August, the precipitation amount is 184 mm (7.2 in), spread over 23 days.

August Precipitation Trends in Watertown

The chart displays monthly precipitation patterns in Watertown, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Watertown, August typically receives around 184 mm (7.2 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec54733675761581751841406564103
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Watertown

In Watertown in August, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

August Average Humidity in Watertown

This chart illustrates the average monthly humidity levels in Watertown, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Watertown is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Watertown

In Watertown in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Watertown.

Maximum UV Index Levels in Watertown for August

The chart shows the monthly maximum UV Index (UVI) for Watertown in August, 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 August, the maximum UV index in Watertown typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101111111110865
Data source: Watertown August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)54 mm (2.1 inches)85%moderate
February Weather16°C (61°F)73 mm (2.9 inches)82%high
March Weather18°C (65°F)36 mm (1.4 inches)80%very high
April Weather21°C (70°F)75 mm (3.0 inches)76%very high
May Weather24°C (76°F)76 mm (3.0 inches)73%extreme
June Weather26°C (80°F)158 mm (6.2 inches)74%extreme
July Weather27°C (81°F)175 mm (6.9 inches)80%extreme
August Weather27°C (81°F)184 mm (7.2 inches)79%extreme
September Weather26°C (80°F)140 mm (5.5 inches)83%very high
October Weather23°C (74°F)65 mm (2.6 inches)77%very high
November Weather17°C (62°F)64 mm (2.5 inches)84%high
December Weather14°C (58°F)103 mm (4.1 inches)88%moderate

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