August Weather in Watertown, United States

Last updated: June 24, 2025

In August, the average temperature in Watertown, United States is a pleasant 21°C (70°F), with variations ranging from a minimum of 8°C (47°F) to a maximum of 33°C (92°F). Expect an average precipitation of 113 mm (4.4 in) spread across 10 days, contributing to an overall humidity of 83%. Perfect for those who enjoy a mix of warmth and refreshing rain!

August Temperature in Watertown

In August in Watertown, the average temperature is 21°C (70°F), with a maximum reaching 33°C (92°F) and a minimum dropping as low as 8°C (47°F). This makes it an ideal time for travelers who enjoy mild weather and are prepared for a range of temperatures during their stay.

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 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 8°C (47°F).

Data source: Temperature data for Watertown generated using information from the Copernicus Climate Change Service.

August Precipitation in Watertown

In Watertown in August, the total precipitation amount is 113 mm (4.4 in) over a span of 10 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 113 mm (4.4 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Watertown

In Watertown in August humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

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 83%, offering insight into how humid the weather typically is during this month.

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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, 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 9, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (15°F)	22 mm (0.9 inches)	85%	moderate
February Weather	-10°C (14°F)	17 mm (0.7 inches)	89%	moderate
March Weather	-1°C (31°F)	48 mm (1.9 inches)	81%	high
April Weather	5°C (41°F)	65 mm (2.6 inches)	82%	high
May Weather	13°C (56°F)	90 mm (3.6 inches)	76%	very high
June Weather	21°C (70°F)	84 mm (3.3 inches)	81%	very high
July Weather	23°C (73°F)	81 mm (3.2 inches)	82%	very high
August Weather	21°C (70°F)	113 mm (4.4 inches)	83%	very high
September Weather	17°C (62°F)	84 mm (3.3 inches)	82%	very high
October Weather	7°C (46°F)	80 mm (3.1 inches)	82%	moderate
November Weather	0°C (33°F)	25 mm (1.0 inches)	87%	moderate
December Weather	-5°C (23°F)	33 mm (1.3 inches)	84%	low