October Weather in Granby, United States

Last updated: June 24, 2025

In October, the average temperature in Granby, United States hovers around 2°C (36°F). While temperatures can plummet to a chilling -28°C (-17°F), they may also rise to a pleasant 21°C (70°F). Expect around 50 mm (2.0 in) of precipitation spread over 9 days, with an average humidity of 76% adding to the overall atmosphere.

October Temperature in Granby

In October in Granby, the average temperature is 2°C (36°F). Maximums can reach 21°C (70°F) and minimums can be as low as -28°C (-17°F). This wide temperature range means that travelers should prepare for both warm and cold weather conditions.

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

The chart illustrates October temperature patterns in Granby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Granby, October typically has an average temperature of 2°C (36°F), with highs reaching up to 21°C (70°F) and lows dropping to around -28°C (-17°F).

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

October Precipitation in Granby

In Granby in October, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

October Precipitation Trends in Granby

The chart displays monthly precipitation patterns in Granby, 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 Granby, October typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 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 Granby

In Granby in October, humidity is 76%. With an average temperature of 2°C (36°F), this humidity feels like an uncomfortable chill that clings to your skin, making even short outdoor excursions seem daunting.

October Average Humidity in Granby

This chart illustrates the average monthly humidity levels in Granby, 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 Granby is approximately 76%, 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 Granby

In Granby in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Granby.

Maximum UV Index Levels in Granby for October

The chart shows the monthly maximum UV Index (UVI) for Granby 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 Granby typically reaches 7, which falls under the high exposure category.

Data source: Granby 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 Granby Compares to Other Months

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

This table compares monthly weather conditions in Granby, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	38 mm (1.5 inches)	88%	moderate
February Weather	-8°C (19°F)	54 mm (2.1 inches)	87%	high
March Weather	-3°C (27°F)	58 mm (2.3 inches)	81%	very high
April Weather	0°C (32°F)	62 mm (2.4 inches)	76%	extreme
May Weather	4°C (39°F)	64 mm (2.5 inches)	66%	extreme
June Weather	11°C (52°F)	33 mm (1.3 inches)	58%	extreme
July Weather	15°C (59°F)	25 mm (1.0 inches)	52%	extreme
August Weather	14°C (58°F)	27 mm (1.1 inches)	56%	extreme
September Weather	11°C (51°F)	26 mm (1.0 inches)	65%	very high
October Weather	2°C (36°F)	50 mm (2.0 inches)	76%	high
November Weather	-4°C (24°F)	40 mm (1.6 inches)	82%	moderate
December Weather	-9°C (15°F)	41 mm (1.6 inches)	89%	moderate