January Weather in Weiser, United States

Last updated: June 24, 2025

In January, the average temperature in Weiser, United States is a chilly -1°C (30°F), with the potential for minimums plunging to -28°C (-18°F) and maximums reaching a mild 11°C (52°F). Expect a generous 44 mm (1.7 in) of precipitation over about 10 days, coupled with high humidity at 90%, making for a cold yet captivating month.

January Temperature in Weiser

In January in Weiser, the average temperature is -1°C (30°F), with maximums reaching 11°C (52°F) and minimums dropping as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures, so layering clothing and packing for potential cold snaps is essential.

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

The chart illustrates January temperature patterns in Weiser, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Weiser, January typically has an average temperature of -1°C (30°F), with highs reaching up to 11°C (52°F) and lows dropping to around -28°C (-18°F).

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

January Precipitation in Weiser

In Weiser in January, the total precipitation amount is 44 mm (1.7 in) over the course of 10 days.

January Precipitation Trends in Weiser

The chart displays monthly precipitation patterns in Weiser, 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 Weiser, January typically receives around 44 mm (1.7 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 Weiser

In Weiser in January, humidity is 90%. With an average temperature of -1°C (30°F), this humidity feels like a bone-chilling dampness that seeps into your clothes, making outdoor activities uncomfortable and travel quite challenging.

January Average Humidity in Weiser

This chart illustrates the average monthly humidity levels in Weiser, 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 Weiser is approximately 90%, 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 Weiser

In Weiser 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 Weiser, you can check the information here.

Maximum UV Index Levels in Weiser for January

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

Data source: Weiser 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 Weiser Compares to Other Months

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

This table compares monthly weather conditions in Weiser, 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 (30°F)	44 mm (1.7 inches)	90%	moderate
February Weather	1°C (33°F)	55 mm (2.1 inches)	91%	moderate
March Weather	7°C (44°F)	34 mm (1.3 inches)	88%	high
April Weather	11°C (52°F)	25 mm (1.0 inches)	84%	very high
May Weather	16°C (61°F)	30 mm (1.2 inches)	77%	very high
June Weather	21°C (71°F)	19 mm (0.8 inches)	78%	extreme
July Weather	28°C (82°F)	1 mm (0.0 inches)	77%	very high
August Weather	26°C (80°F)	6 mm (0.2 inches)	63%	very high
September Weather	20°C (68°F)	11 mm (0.4 inches)	60%	very high
October Weather	11°C (52°F)	21 mm (0.8 inches)	77%	moderate
November Weather	5°C (41°F)	29 mm (1.1 inches)	86%	moderate
December Weather	0°C (33°F)	35 mm (1.4 inches)	89%	low