July Weather in Watertown, United States

Last updated: June 24, 2025

In July, the average temperature in Watertown, United States is a pleasant 23°C (73°F). Be prepared for a range of temperatures, with minimums dipping to 10°C (50°F) and peak highs reaching up to 36°C (97°F). You'll encounter around 81 mm (3.2 in) of precipitation over 9 days, contributing to an average humidity of 82%—perfect for those who enjoy a lush, vibrant atmosphere.

July Temperature in Watertown

In July in Watertown, the average temperature is 23°C (73°F). Maximums can reach 36°C (97°F), while minimums can drop to as low as 10°C (50°F). This diverse temperature range makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

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

The chart illustrates July 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, July typically has an average temperature of 23°C (73°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).

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

July Precipitation in Watertown

In Watertown in July, the precipitation amount is 81 mm (3.2 in) spread over a duration of 9 days.

July Precipitation Trends in Watertown

The chart displays monthly precipitation patterns in Watertown, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Watertown, July typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Watertown

In Watertown in July, humidity is 82%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor activities feel a bit more strenuous but offering a tropical ambiance perfect for leisurely strolls and relaxed sightseeing.

July Average Humidity in Watertown

This chart illustrates the average monthly humidity levels in Watertown, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Watertown is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Watertown

In Watertown in July, 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 July

The chart shows the monthly maximum UV Index (UVI) for Watertown in July, 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 July, the maximum UV index in Watertown typically reaches 9, which falls under the very high exposure category.

Data source: Watertown July 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 July 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 July’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 July’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