January Weather in Grannis, United States

Last updated: June 24, 2025

In January, the average temperature in Grannis, United States is a cool 6°C (43°F). Be prepared for a wide range of conditions, with minimum temperatures dropping as low as -14°C (6°F) and peaks reaching up to 23°C (74°F). On average, you can expect 107 mm (4.2 in) of precipitation spread over 10 days, contributing to an average humidity of 82%.

January Temperature in Grannis

In January in Grannis, the average temperature is 6°C (43°F). The maximum can reach 23°C (74°F) and the minimum can be as low as -14°C (6°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold weather.

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

The chart illustrates January temperature patterns in Grannis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grannis, January typically has an average temperature of 6°C (43°F), with highs reaching up to 23°C (74°F) and lows dropping to around -14°C (6°F).

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

January Precipitation in Grannis

In Grannis in January, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.

January Precipitation Trends in Grannis

The chart displays monthly precipitation patterns in Grannis, 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 Grannis, January typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 10 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 Grannis

In Grannis in January, humidity is 82%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel less invigorating and more uncomfortable, as the heavy air can leave you feeling sluggish and fatigued during your travels.

January Average Humidity in Grannis

This chart illustrates the average monthly humidity levels in Grannis, 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 Grannis is approximately 82%, 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 Grannis

In Grannis in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Grannis for better planning.

Maximum UV Index Levels in Grannis for January

The chart shows the monthly maximum UV Index (UVI) for Grannis 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 Grannis typically reaches 4, which falls under the moderate exposure category.

Data source: Grannis 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 Grannis Compares to Other Months

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

This table compares monthly weather conditions in Grannis, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	107 mm (4.2 inches)	82%	moderate
February Weather	8°C (46°F)	159 mm (6.3 inches)	79%	high
March Weather	13°C (56°F)	161 mm (6.4 inches)	77%	very high
April Weather	16°C (61°F)	194 mm (7.6 inches)	78%	very high
May Weather	21°C (71°F)	195 mm (7.7 inches)	82%	extreme
June Weather	26°C (78°F)	105 mm (4.1 inches)	81%	extreme
July Weather	27°C (81°F)	102 mm (4.0 inches)	75%	extreme
August Weather	27°C (80°F)	108 mm (4.3 inches)	61%	very high
September Weather	24°C (76°F)	71 mm (2.8 inches)	59%	very high
October Weather	18°C (64°F)	131 mm (5.1 inches)	69%	very high
November Weather	11°C (52°F)	83 mm (3.3 inches)	82%	moderate
December Weather	9°C (48°F)	137 mm (5.4 inches)	87%	moderate