July Weather in Watertown, United States

Last updated: June 24, 2025

In {Watertown}, {United States}, the average temperature in {July} hovers around 27°C (81°F). Expect a delightful range, with minimums dipping to 20°C (69°F) and maximums soaring up to 38°C (100°F). However, be prepared for 175 mm (6.9 in) of precipitation spread over 23 days, accompanied by a high average humidity of 80%.

July Temperature in Watertown

In July in Watertown, the average temperature is 27°C (81°F). Maximum temperatures can reach 38°C (100°F), while the minimum can drop to as low as 20°C (69°F). This pleasant climate makes Watertown an ideal destination for travelers seeking warm weather and outdoor activities.

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 27°C (81°F), with highs reaching up to 38°C (100°F) and lows dropping to around 20°C (69°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 175 mm (6.9 in) over the course of 23 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 175 mm (6.9 inches) of precipitation spread over approximately 23 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 80%. With an average temperature of 27°C (81°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making travel tiring as sweat beads form quickly and the air feels thick and heavy.

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 80%, 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 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 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 11, which falls under the extreme 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	13°C (55°F)	54 mm (2.1 inches)	85%	moderate
February Weather	16°C (61°F)	73 mm (2.9 inches)	82%	high
March Weather	18°C (65°F)	36 mm (1.4 inches)	80%	very high
April Weather	21°C (70°F)	75 mm (3.0 inches)	76%	very high
May Weather	24°C (76°F)	76 mm (3.0 inches)	73%	extreme
June Weather	26°C (80°F)	158 mm (6.2 inches)	74%	extreme
July Weather	27°C (81°F)	175 mm (6.9 inches)	80%	extreme
August Weather	27°C (81°F)	184 mm (7.2 inches)	79%	extreme
September Weather	26°C (80°F)	140 mm (5.5 inches)	83%	very high
October Weather	23°C (74°F)	65 mm (2.6 inches)	77%	very high
November Weather	17°C (62°F)	64 mm (2.5 inches)	84%	high
December Weather	14°C (58°F)	103 mm (4.1 inches)	88%	moderate