July Weather in Somerville, United States

Last updated: June 24, 2025

In Somerville, United States, the average temperature in July is a warm 27°C (81°F), making it an inviting destination. Expect minimums around 18°C (64°F) and maximums reaching up to 35°C (96°F). With 114 mm (4.5 in) of precipitation spread over 16 days, it's wise to pack an umbrella. The average humidity of 78% adds a touch of tropical charm to this vibrant locale.

July Temperature in Somerville

In July in Somerville, the average temperature is 27°C (81°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 18°C (64°F). This comfortable climate makes Somerville an ideal destination for travelers looking to enjoy 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 35°C (96°F) and lows dropping to around 18°C (64°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 114 mm (4.5 in), occurring over a span of 16 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 114 mm (4.5 inches) of precipitation spread over approximately 16 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 78%. With an average temperature of 27°C (81°F), this humidity feels like a warm, heavy embrace that makes traveling feel both invigorating and exhausting. Moments spent outside can quickly become clammy and uncomfortable, urging travelers to seek shade and hydration as they explore.

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 78%, 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	7°C (44°F)	114 mm (4.5 inches)	87%	moderate
February Weather	10°C (50°F)	180 mm (7.1 inches)	87%	high
March Weather	13°C (56°F)	190 mm (7.5 inches)	85%	very high
April Weather	16°C (62°F)	148 mm (5.8 inches)	82%	very high
May Weather	22°C (72°F)	103 mm (4.0 inches)	83%	very high
June Weather	25°C (77°F)	138 mm (5.4 inches)	82%	extreme
July Weather	27°C (81°F)	114 mm (4.5 inches)	78%	extreme
August Weather	26°C (80°F)	114 mm (4.5 inches)	67%	very high
September Weather	24°C (76°F)	115 mm (4.5 inches)	64%	very high
October Weather	19°C (66°F)	130 mm (5.1 inches)	74%	high
November Weather	11°C (51°F)	75 mm (2.9 inches)	87%	high
December Weather	9°C (48°F)	157 mm (6.2 inches)	88%	moderate