January Weather in Dewey, United States

Last updated: June 24, 2025

In January, the average temperature in Dewey, United States hovers around 3°C (37°F). During this time, temperatures can dip to a chilly -17°C (1°F) or soar to a comfortable 23°C (73°F). Expect about 64 mm (2.5 in) of precipitation spread over 6 days, contributing to an average humidity of 77%. Be prepared for a mix of weather as you explore!

January Temperature in Dewey

In January in Dewey, the average temperature is 3°C (37°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -17°C (1°F). Travellers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold conditions.

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

The chart illustrates January temperature patterns in Dewey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dewey, January typically has an average temperature of 3°C (37°F), with highs reaching up to 23°C (73°F) and lows dropping to around -17°C (1°F).

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

January Precipitation in Dewey

In Dewey in January, the total precipitation amount is 64 mm (2.5 in) during a span of 6 days.

January Precipitation Trends in Dewey

The chart displays monthly precipitation patterns in Dewey, 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 Dewey, January typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 6 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 Dewey

In Dewey in January, humidity is 77%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill settling in, making travel uncomfortable as the moisture seeps into your clothes and lingers on your skin, turning each step into a reminder of the cold, clammy atmosphere.

January Average Humidity in Dewey

This chart illustrates the average monthly humidity levels in Dewey, 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 Dewey is approximately 77%, 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 Dewey

In Dewey 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 Dewey, you can check the information here.

Maximum UV Index Levels in Dewey for January

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

Data source: Dewey 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 Dewey Compares to Other Months

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

This table compares monthly weather conditions in Dewey, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	64 mm (2.5 inches)	77%	moderate
February Weather	4°C (39°F)	54 mm (2.1 inches)	76%	high
March Weather	11°C (52°F)	115 mm (4.5 inches)	71%	high
April Weather	15°C (58°F)	107 mm (4.2 inches)	73%	very high
May Weather	20°C (69°F)	220 mm (8.7 inches)	83%	very high
June Weather	26°C (79°F)	101 mm (4.0 inches)	83%	extreme
July Weather	28°C (82°F)	85 mm (3.4 inches)	81%	extreme
August Weather	26°C (80°F)	107 mm (4.2 inches)	73%	very high
September Weather	24°C (76°F)	87 mm (3.4 inches)	67%	very high
October Weather	16°C (61°F)	136 mm (5.4 inches)	72%	high
November Weather	9°C (49°F)	43 mm (1.7 inches)	82%	moderate
December Weather	6°C (43°F)	36 mm (1.4 inches)	85%	moderate