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July Weather in Watertown, United States

Last updated: June 24, 2025

In Watertown, United States, the average temperature in July sits at a comfortable 23°C (74°F). However, be prepared for variability, as temperatures can dip to a cool 12°C (54°F) or soar to a warm 35°C (94°F). During this month, expect approximately 102 mm (4.0 in) of precipitation over 10 days, accompanied by a notable average humidity of 78%. Enjoy your time!

July Temperature in Watertown

In July in Watertown, the average temperature is 23°C (74°F). The maximum can reach 35°C (94°F) and the minimum can be as low as 12°C (54°F). This pleasant temperature range makes it an ideal time for traveling and exploring the attractions in Watertown.

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 (74°F), with highs reaching up to 35°C (94°F) and lows dropping to around 12°C (54°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.

July Precipitation in Watertown

In Watertown in July, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 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 102 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec51495710312111310294991144345
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Watertown

In Watertown in July humidity is 78%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace, making travel somewhat stifling and prompting frequent breaks to hydrate and seek shade.

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 78%, 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 July generated using information from the Copernicus Climate Change Service.

July UV Index in Watertown

In Watertown in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101098532
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.
 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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