October Weather in Grantham, United States

Last updated: June 24, 2025

In Grantham, United States, the average temperature in October hovers around 10°C (50°F). During this time, temperatures can dip as low as -4°C (25°F) or rise to a maximum of 26°C (79°F). Expect about 132 mm (5.2 in) of precipitation spread over 13 days, coupled with an average humidity of 78%. Prepare for a mix of chilly and warm days, along with potential rain!

October Temperature in Grantham

In October in Grantham, the average temperature is 10°C (50°F). The maximum can reach 26°C (79°F), while the minimum can drop as low as -4°C (25°F). This variability makes it essential for travelers to pack layers to stay comfortable in changing weather conditions.

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

The chart illustrates October temperature patterns in Grantham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grantham, October typically has an average temperature of 10°C (50°F), with highs reaching up to 26°C (79°F) and lows dropping to around -4°C (25°F).

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

October Precipitation in Grantham

In Grantham in October, the precipitation amount is 132 mm (5.2 in) over the course of 13 days.

October Precipitation Trends in Grantham

The chart displays monthly precipitation patterns in Grantham, 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 Grantham, October typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Grantham

In Grantham in October humidity is 78%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that can seep into your clothes, making outdoor activities less enjoyable and requiring extra layers to stay warm as you explore the area.

October Average Humidity in Grantham

This chart illustrates the average monthly humidity levels in Grantham, 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 Grantham is approximately 78%, 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 Grantham

In Grantham in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Grantham.

Maximum UV Index Levels in Grantham for October

The chart shows the monthly maximum UV Index (UVI) for Grantham 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 Grantham typically reaches 5, which falls under the moderate exposure category.

Data source: Grantham 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 Grantham Compares to Other Months

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

This table compares monthly weather conditions in Grantham, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	70 mm (2.7 inches)	86%	moderate
February Weather	-4°C (25°F)	81 mm (3.2 inches)	84%	moderate
March Weather	0°C (32°F)	71 mm (2.8 inches)	82%	high
April Weather	6°C (44°F)	116 mm (4.6 inches)	80%	very high
May Weather	13°C (56°F)	78 mm (3.1 inches)	72%	very high
June Weather	19°C (66°F)	85 mm (3.4 inches)	72%	very high
July Weather	22°C (71°F)	120 mm (4.7 inches)	67%	very high
August Weather	21°C (69°F)	86 mm (3.4 inches)	66%	very high
September Weather	17°C (62°F)	64 mm (2.5 inches)	71%	high
October Weather	10°C (50°F)	132 mm (5.2 inches)	78%	moderate
November Weather	2°C (36°F)	100 mm (3.9 inches)	84%	moderate
December Weather	-3°C (27°F)	102 mm (4.0 inches)	81%	low