January Weather in Monticello, United States

Last updated: June 24, 2025

In Monticello, United States, the average temperature in January hovers around -3°C (27°F). Expect chilly conditions, with minimum temperatures dropping to -19°C (-2°F) and maximums reaching up to 11°C (53°F). The month brings about 35 mm (1.4 in) of precipitation spread over 6 days, contributing to an average humidity of 85%. Bundle up and prepare for a brisk experience!

January Temperature in Monticello

In January in Monticello, the average temperature is -3°C (27°F), with maximums reaching 11°C (53°F) and minimums plummeting as low as -19°C (-2°F). Visitors should be prepared for a wide range of temperatures and dress in layers to stay comfortable while exploring.

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 11°C (53°F) and lows dropping to around -19°C (-2°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 35 mm (1.4 in) spread over a period of 6 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 35 mm (1.4 inches) of precipitation spread over approximately 6 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 85%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps through layers of clothing, making travel seem daunting and the cold air sting your skin.

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 85%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Monticello for better planning.

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 4, 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)	35 mm (1.4 inches)	85%	moderate
February Weather	0°C (31°F)	43 mm (1.7 inches)	86%	high
March Weather	5°C (41°F)	53 mm (2.1 inches)	76%	very high
April Weather	10°C (50°F)	18 mm (0.7 inches)	69%	very high
May Weather	15°C (59°F)	28 mm (1.1 inches)	53%	extreme
June Weather	22°C (72°F)	10 mm (0.4 inches)	40%	extreme
July Weather	24°C (76°F)	32 mm (1.3 inches)	36%	extreme
August Weather	23°C (74°F)	21 mm (0.8 inches)	44%	extreme
September Weather	18°C (65°F)	26 mm (1.0 inches)	59%	very high
October Weather	10°C (50°F)	37 mm (1.4 inches)	74%	high
November Weather	4°C (40°F)	19 mm (0.8 inches)	83%	moderate
December Weather	-2°C (29°F)	34 mm (1.3 inches)	85%	moderate