October Weather in Harvard, United States

Last updated: June 24, 2025

In October, the average temperature in Harvard, United States is a mild 11°C (53°F). Expect temperatures to range from a chilly -8°C (19°F) to a warm 33°C (91°F). With an average humidity of 72% and about 84 mm (3.3 in) of precipitation over 8 days, it’s a month where you might want to keep an umbrella handy while enjoying the refreshing weather.

October Temperature in Harvard

In October in Harvard, the average temperature is 11°C (53°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as -8°C (19°F). This variation in temperatures makes Harvard a destination where travelers should prepare for both warm days and chilly nights.

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

The chart illustrates October 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, October typically has an average temperature of 11°C (53°F), with highs reaching up to 33°C (91°F) and lows dropping to around -8°C (19°F).

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

October Precipitation in Harvard

In Harvard in October, the precipitation amount is 84 mm (3.3 in) spread over 8 days.

October Precipitation Trends in Harvard

The chart displays monthly precipitation patterns in Harvard, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Harvard, October typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Harvard

In Harvard in October, humidity is 72%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities slightly uncomfortable and the air heavy, which can dampen the enjoyment of sightseeing and exploring.

October Average Humidity in Harvard

This chart illustrates the average monthly humidity levels in Harvard, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Harvard is approximately 72%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Harvard

In Harvard in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Harvard, you can refer to this Hourly UV Index in Harvard.

Maximum UV Index Levels in Harvard for October

The chart shows the monthly maximum UV Index (UVI) for Harvard in October, 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 October, the maximum UV index in Harvard typically reaches 6, which falls under the high exposure category.

Data source: Harvard October 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 October 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 October’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 October’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