July Weather in Harvard, United States

Last updated: June 24, 2025

In Harvard, United States, the average temperature in July is a warm 26°C (78°F), with a few fluctuations; temperatures can dip to a cool 13°C (55°F) and peak at a sizzling 37°C (100°F). Expect some rain, as 68 mm (2.7 in) of precipitation typically falls over 8 days. Additionally, the atmosphere is quite humid, with an average humidity level of 84%.

July Temperature in Harvard

In July in Harvard, the average temperature is 26°C (78°F). Maximums can reach 37°C (100°F) and minimums can drop as low as 13°C (55°F). This makes it an ideal time for travelers looking to enjoy warm weather while still having the option for cooler evenings.

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

The chart illustrates July temperature patterns in Harvard, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harvard, July typically has an average temperature of 26°C (78°F), with highs reaching up to 37°C (100°F) and lows dropping to around 13°C (55°F).

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

July Precipitation in Harvard

In Harvard in July, the precipitation amount is 68 mm (2.7 in) spread over 8 days.

July Precipitation Trends in Harvard

The chart displays monthly precipitation patterns in Harvard, 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 Harvard, July typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Harvard

In Harvard in July, humidity is 84%. With an average temperature of 26°C (78°F), this humidity feels like walking through a warm, moist blanket, making outdoor activities feel heavy and exhausting for travelers.

July Average Humidity in Harvard

This chart illustrates the average monthly humidity levels in Harvard, 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 Harvard is approximately 84%, 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 Harvard

In Harvard 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 Harvard.

Maximum UV Index Levels in Harvard for July

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

Data source: Harvard 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 Harvard Compares to Other Months

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

This table compares monthly weather conditions in Harvard, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	29 mm (1.2 inches)	73%	moderate
February Weather	-3°C (27°F)	22 mm (0.9 inches)	81%	moderate
March Weather	5°C (42°F)	89 mm (3.5 inches)	69%	high
April Weather	10°C (51°F)	49 mm (1.9 inches)	71%	very high
May Weather	17°C (62°F)	172 mm (6.8 inches)	80%	very high
June Weather	24°C (76°F)	91 mm (3.6 inches)	83%	extreme
July Weather	26°C (78°F)	68 mm (2.7 inches)	84%	extreme
August Weather	24°C (75°F)	84 mm (3.3 inches)	84%	very high
September Weather	21°C (70°F)	67 mm (2.6 inches)	77%	very high
October Weather	11°C (53°F)	84 mm (3.3 inches)	72%	high
November Weather	5°C (41°F)	22 mm (0.9 inches)	80%	moderate
December Weather	0°C (33°F)	41 mm (1.6 inches)	79%	moderate