January Weather in Monticello, United States

Last updated: June 24, 2025

In January, the average temperature in Monticello, United States hovers around -3°C (27°F). Expect chilly nights with minimums dipping to -24°C (-12°F), while the days can warm up to a comfortable 16°C (61°F). With total precipitation of 82 mm (3.2 in) spread over 10 days, you can anticipate some damp weather, complemented by an average humidity of 84%. Prepare layers and stay cozy!

January Temperature in Monticello

In January in Monticello, the average temperature is -3°C (27°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -24°C (-12°F). Be prepared for a wide temperature range if you're planning to travel during this time!

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

The chart illustrates January temperature patterns in Monticello, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monticello, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (61°F) and lows dropping to around -24°C (-12°F).

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

January Precipitation in Monticello

In Monticello in January, the total precipitation amount is 82 mm (3.2 in) observed over a span of 10 days.

January Precipitation Trends in Monticello

The chart displays monthly precipitation patterns in Monticello, 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 Monticello, January typically receives around 82 mm (3.2 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 Monticello

In Monticello in January humidity is 84%. With an average temperature of -3°C (27°F), this humidity feels like a heavy blanket that wraps around you, making travel uncomfortable and your breath visible in the cold air.

January Average Humidity in Monticello

This chart illustrates the average monthly humidity levels in Monticello, 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 Monticello is approximately 84%, 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 Monticello

In Monticello 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 Monticello, you can check the information here.

Maximum UV Index Levels in Monticello for January

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

Data source: Monticello 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 Monticello Compares to Other Months

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

This table compares monthly weather conditions in Monticello, 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 (27°F)	82 mm (3.2 inches)	84%	moderate
February Weather	-2°C (30°F)	108 mm (4.2 inches)	82%	moderate
March Weather	2°C (35°F)	97 mm (3.8 inches)	81%	high
April Weather	8°C (47°F)	127 mm (5.0 inches)	78%	very high
May Weather	14°C (58°F)	139 mm (5.5 inches)	69%	very high
June Weather	19°C (66°F)	115 mm (4.5 inches)	69%	very high
July Weather	22°C (72°F)	121 mm (4.8 inches)	62%	very high
August Weather	21°C (70°F)	127 mm (5.0 inches)	65%	very high
September Weather	17°C (64°F)	98 mm (3.8 inches)	68%	very high
October Weather	12°C (53°F)	153 mm (6.0 inches)	74%	high
November Weather	4°C (39°F)	105 mm (4.1 inches)	82%	moderate
December Weather	0°C (32°F)	113 mm (4.4 inches)	80%	low