July Weather in Somerville, United States

Last updated: June 24, 2025

In July, the average temperature in Somerville, United States hovers around 27°C (81°F), with a minimum of 16°C (62°F) and a maximum soaring to 36°C (96°F). Expect around 124 mm (4.9 in) of precipitation spread over 14 days, contributing to an average humidity level of 80%. Be prepared for warm days, but don't forget your umbrella!

July Temperature in Somerville

In July in Somerville, the average temperature is 27°C (81°F). Maximum temperatures can reach 36°C (96°F), while the minimum can drop to as low as 16°C (62°F). This makes it an ideal destination for travelers looking to enjoy warm weather with some variability for outdoor activities.

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

The chart illustrates July temperature patterns in Somerville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Somerville, July typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (96°F) and lows dropping to around 16°C (62°F).

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

July Precipitation in Somerville

In Somerville in July, the precipitation amount is 124 mm (4.9 in) over a span of 14 days.

July Precipitation Trends in Somerville

The chart displays monthly precipitation patterns in Somerville, 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 Somerville, July typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 14 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 Somerville

In Somerville 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 Somerville

This chart illustrates the average monthly humidity levels in Somerville, 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 Somerville 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 Somerville

In Somerville 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 Somerville.

Maximum UV Index Levels in Somerville for July

The chart shows the monthly maximum UV Index (UVI) for Somerville 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 Somerville typically reaches 11, which falls under the extreme exposure category.

Data source: Somerville 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 Somerville Compares to Other Months

Weather in Somerville varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Somerville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Somerville, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	100 mm (4.0 inches)	86%	moderate
February Weather	8°C (46°F)	172 mm (6.8 inches)	85%	high
March Weather	13°C (55°F)	165 mm (6.5 inches)	84%	very high
April Weather	16°C (61°F)	135 mm (5.3 inches)	81%	very high
May Weather	22°C (72°F)	105 mm (4.1 inches)	83%	extreme
June Weather	26°C (78°F)	109 mm (4.3 inches)	83%	extreme
July Weather	27°C (81°F)	124 mm (4.9 inches)	80%	extreme
August Weather	26°C (79°F)	114 mm (4.5 inches)	73%	very high
September Weather	24°C (76°F)	114 mm (4.5 inches)	70%	very high
October Weather	18°C (65°F)	105 mm (4.1 inches)	73%	high
November Weather	10°C (51°F)	75 mm (2.9 inches)	85%	moderate
December Weather	8°C (47°F)	145 mm (5.7 inches)	88%	moderate