January Weather in Monticello, United States

Last updated: June 24, 2025

In January, the average temperature in Monticello, United States hovers around 9°C (48°F). Expect a range as lows can dip to -12°C (11°F) while highs may reach up to 27°C (81°F). During this time, anticipate 125 mm (4.9 in) of precipitation spread over 9 days, accompanied by an average humidity of 84%. Prepare accordingly for a mix of chilly and warm days!

January Temperature in Monticello

In January in Monticello, the average temperature is 9°C (48°F), with maximums reaching 27°C (81°F) and minimums dropping as low as -12°C (11°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit to Monticello.

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 9°C (48°F), with highs reaching up to 27°C (81°F) and lows dropping to around -12°C (11°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 125 mm (4.9 in) recorded over a span of 9 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 125 mm (4.9 inches) of precipitation spread over approximately 9 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 9°C (48°F), this humidity feels like a damp chill that envelops you, making it essential to dress in layers and stay active, as the moisture in the air can quickly lead to discomfort while traveling.

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 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	9°C (48°F)	125 mm (4.9 inches)	84%	moderate
February Weather	11°C (53°F)	199 mm (7.8 inches)	83%	high
March Weather	16°C (61°F)	141 mm (5.6 inches)	80%	very high
April Weather	18°C (65°F)	176 mm (6.9 inches)	82%	extreme
May Weather	23°C (74°F)	125 mm (4.9 inches)	83%	extreme
June Weather	27°C (80°F)	106 mm (4.2 inches)	80%	extreme
July Weather	28°C (83°F)	107 mm (4.2 inches)	80%	extreme
August Weather	28°C (83°F)	91 mm (3.6 inches)	75%	extreme
September Weather	27°C (80°F)	72 mm (2.8 inches)	73%	very high
October Weather	21°C (69°F)	131 mm (5.2 inches)	76%	very high
November Weather	13°C (56°F)	91 mm (3.6 inches)	84%	high
December Weather	11°C (52°F)	128 mm (5.0 inches)	88%	moderate