October Weather in Hyannis, United States

Last updated: June 24, 2025

In October, the average temperature in Hyannis, United States hovers around 8°C (46°F), with a wide range that can dip to a chilling -15°C (5°F) or soar to a warm 29°C (84°F). Be prepared for occasional rain, as precipitation measures about 36 mm (1.4 in) over 7 days, while the average humidity remains around 64%. Stay comfortable and make the most of the season!

October Temperature in Hyannis

In October in Hyannis, the average temperature is 8°C (46°F), with maximums reaching 29°C (84°F) and minimums dropping as low as -15°C (5°F). Travelers should be prepared for a wide range of temperatures when visiting during this time.

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

The chart illustrates October temperature patterns in Hyannis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hyannis, October typically has an average temperature of 8°C (46°F), with highs reaching up to 29°C (84°F) and lows dropping to around -15°C (5°F).

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

October Precipitation in Hyannis

In Hyannis in October, the total precipitation amount is 36 mm (1.4 in) over a span of 7 days.

October Precipitation Trends in Hyannis

The chart displays monthly precipitation patterns in Hyannis, 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 Hyannis, October typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 7 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 Hyannis

In Hyannis in October humidity is 64%. With an average temperature of 8°C (46°F), this humidity feels like a chilly embrace, making traveling somewhat brisk and invigorating, but you might want to dress in layers to balance the moisture in the air.

October Average Humidity in Hyannis

This chart illustrates the average monthly humidity levels in Hyannis, 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 Hyannis is approximately 64%, 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 Hyannis

In Hyannis 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 Hyannis, you can refer to this Hourly UV Index in Hyannis.

Maximum UV Index Levels in Hyannis for October

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

Data source: Hyannis 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 Hyannis Compares to Other Months

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

This table compares monthly weather conditions in Hyannis, 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)	14 mm (0.5 inches)	73%	moderate
February Weather	-4°C (25°F)	24 mm (0.9 inches)	80%	moderate
March Weather	3°C (38°F)	63 mm (2.5 inches)	64%	high
April Weather	7°C (44°F)	49 mm (1.9 inches)	64%	very high
May Weather	13°C (55°F)	136 mm (5.4 inches)	76%	very high
June Weather	21°C (70°F)	56 mm (2.2 inches)	79%	extreme
July Weather	23°C (74°F)	63 mm (2.5 inches)	77%	extreme
August Weather	21°C (71°F)	58 mm (2.3 inches)	79%	very high
September Weather	18°C (65°F)	46 mm (1.8 inches)	70%	very high
October Weather	8°C (46°F)	36 mm (1.4 inches)	64%	high
November Weather	3°C (38°F)	22 mm (0.9 inches)	75%	moderate
December Weather	-1°C (30°F)	21 mm (0.8 inches)	78%	moderate