January Weather in Jaffrey, United States

Last updated: June 24, 2025

In Jaffrey, United States, the average temperature in January hovers around -4°C (26°F), with the potential for extremes ranging from a frigid -24°C (-12°F) to a mild 17°C (63°F). Expect 76 mm (3.0 in) of precipitation spread across 9 days, contributing to a high average humidity of 86%. Be prepared for a chilly and damp month!

January Temperature in Jaffrey

In January in Jaffrey, the average temperature is -4°C (26°F), with maximums reaching 17°C (63°F) and minimums dipping as low as -24°C (-12°F). Be sure to pack warm clothing for your travels, but also prepare for some pleasant days!

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

The chart illustrates January temperature patterns in Jaffrey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jaffrey, January typically has an average temperature of -4°C (26°F), with highs reaching up to 17°C (63°F) and lows dropping to around -24°C (-12°F).

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

January Precipitation in Jaffrey

In Jaffrey in January, the precipitation amount is 76 mm (3.0 in) spread over a period of 9 days.

January Precipitation Trends in Jaffrey

The chart displays monthly precipitation patterns in Jaffrey, 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 Jaffrey, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 9 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 Jaffrey

In Jaffrey in January humidity is 86%. With an average temperature of -4°C (26°F), this humidity feels like an icy chill that penetrates layers of clothing, making outdoor activities uncomfortable and requiring travelers to be extra cautious as they navigate the frigid air.

January Average Humidity in Jaffrey

This chart illustrates the average monthly humidity levels in Jaffrey, 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 Jaffrey is approximately 86%, 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 Jaffrey

In Jaffrey 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 Jaffrey, you can check the information here.

Maximum UV Index Levels in Jaffrey for January

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

Data source: Jaffrey 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 Jaffrey Compares to Other Months

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

This table compares monthly weather conditions in Jaffrey, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	76 mm (3.0 inches)	86%	moderate
February Weather	-2°C (28°F)	90 mm (3.6 inches)	84%	moderate
March Weather	1°C (34°F)	84 mm (3.3 inches)	82%	high
April Weather	7°C (46°F)	132 mm (5.2 inches)	80%	very high
May Weather	14°C (57°F)	90 mm (3.5 inches)	72%	very high
June Weather	20°C (67°F)	89 mm (3.5 inches)	72%	very high
July Weather	22°C (73°F)	151 mm (5.9 inches)	67%	very high
August Weather	22°C (71°F)	102 mm (4.0 inches)	66%	very high
September Weather	17°C (64°F)	88 mm (3.5 inches)	71%	high
October Weather	11°C (53°F)	136 mm (5.4 inches)	78%	high
November Weather	3°C (39°F)	104 mm (4.1 inches)	84%	moderate
December Weather	-2°C (29°F)	125 mm (4.9 inches)	81%	low