January Weather in Reservoir, United States

Last updated: June 24, 2025

In Reservoir, United States, the average temperature in January hovers around -2°C (28°F), with thrilling extremes ranging from a chilling -24°C (-12°F) to a warmer 18°C (64°F). Expect 73 mm (2.9 in) of precipitation spread over 11 days, and embrace the high 89% humidity that envelops the area, creating a uniquely brisk atmosphere.

January Temperature in Reservoir

In January in Reservoir, the average temperature is -2°C (28°F). Maximums can reach 18°C (64°F), while minimums can drop to as low as -24°C (-12°F). Travelers should be prepared for a wide range of temperatures and dress accordingly.

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

The chart illustrates January temperature patterns in Reservoir, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reservoir, January typically has an average temperature of -2°C (28°F), with highs reaching up to 18°C (64°F) and lows dropping to around -24°C (-12°F).

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

January Precipitation in Reservoir

In Reservoir in January, the precipitation amount is 73 mm (2.9 in), spread over 11 days.

January Precipitation Trends in Reservoir

The chart displays monthly precipitation patterns in Reservoir, 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 Reservoir, January typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Reservoir

In Reservoir in January, humidity is 89%. With an average temperature of -2°C (28°F), this humidity feels like a heavy blanket, making it difficult to stay warm while traveling outdoors.

January Average Humidity in Reservoir

This chart illustrates the average monthly humidity levels in Reservoir, 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 Reservoir is approximately 89%, 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 Reservoir

In Reservoir 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 Reservoir, you can check the information here.

Maximum UV Index Levels in Reservoir for January

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

Data source: Reservoir 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 Reservoir Compares to Other Months

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

This table compares monthly weather conditions in Reservoir, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	73 mm (2.9 inches)	89%	moderate
February Weather	0°C (32°F)	112 mm (4.4 inches)	90%	moderate
March Weather	3°C (38°F)	96 mm (3.8 inches)	89%	high
April Weather	9°C (49°F)	115 mm (4.5 inches)	88%	very high
May Weather	15°C (60°F)	139 mm (5.5 inches)	80%	very high
June Weather	20°C (68°F)	117 mm (4.6 inches)	79%	very high
July Weather	23°C (73°F)	119 mm (4.7 inches)	74%	very high
August Weather	22°C (71°F)	97 mm (3.8 inches)	64%	very high
September Weather	18°C (65°F)	130 mm (5.1 inches)	67%	very high
October Weather	12°C (54°F)	114 mm (4.5 inches)	81%	high
November Weather	4°C (39°F)	80 mm (3.1 inches)	89%	moderate
December Weather	1°C (33°F)	97 mm (3.8 inches)	88%	moderate