January Weather in Grantley, United States

Last updated: June 24, 2025

In January, the average temperature in Grantley, United States hovers around 1°C (35°F). Expect chilly lows of -15°C (5°F) and pleasant highs reaching up to 20°C (69°F). With 60 mm (2.3 in) of precipitation over about 8 days, it's advisable to keep an umbrella handy. The air is quite humid, with an average humidity level of 84%.

January Temperature in Grantley

In January in Grantley, the average temperature is 1°C (35°F). Maximum temperatures can reach 20°C (69°F), while minimums can drop as low as -15°C (5°F). Travelers should be prepared for a wide range of temperatures and pack accordingly, ensuring comfort from the cold to the warmer days.

January Weather in Grantley: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Grantley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grantley, January typically has an average temperature of 1°C (35°F), with highs reaching up to 20°C (69°F) and lows dropping to around -15°C (5°F).

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

January Precipitation in Grantley

In Grantley in January, the precipitation amount is 60 mm (2.3 in) over a span of 8 days.

January Precipitation Trends in Grantley

The chart displays monthly precipitation patterns in Grantley, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Grantley, January typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Grantley

In Grantley in January humidity is 84%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp chill that seeps into your bones, making it feel much colder than the thermometer suggests, which can be quite uncomfortable for traveling.

January Average Humidity in Grantley

This chart illustrates the average monthly humidity levels in Grantley, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Grantley is approximately 84%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Grantley

In Grantley in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Grantley, you can check the information here.

Maximum UV Index Levels in Grantley for January

The chart shows the monthly maximum UV Index (UVI) for Grantley in January, 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 January, the maximum UV index in Grantley typically reaches 3, which falls under the moderate exposure category.

Data source: Grantley January 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 January Weather in Grantley Compares to Other Months

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

This table compares monthly weather conditions in Grantley, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	60 mm (2.3 inches)	84%	moderate
February Weather	3°C (38°F)	100 mm (3.9 inches)	83%	moderate
March Weather	6°C (44°F)	96 mm (3.8 inches)	83%	high
April Weather	12°C (54°F)	100 mm (3.9 inches)	81%	very high
May Weather	18°C (64°F)	125 mm (4.9 inches)	78%	very high
June Weather	23°C (73°F)	96 mm (3.8 inches)	79%	very high
July Weather	26°C (79°F)	129 mm (5.1 inches)	74%	very high
August Weather	24°C (76°F)	123 mm (4.9 inches)	72%	very high
September Weather	21°C (70°F)	109 mm (4.3 inches)	75%	very high
October Weather	16°C (60°F)	101 mm (4.0 inches)	81%	high
November Weather	7°C (45°F)	85 mm (3.3 inches)	85%	moderate
December Weather	4°C (39°F)	90 mm (3.5 inches)	84%	low