January Weather in Crestline, United States

Last updated: June 24, 2025

In Crestline, United States, the average temperature in January hovers around -2°C (29°F). Expect a range with minimums plunging to -24°C (-10°F) and maximums reaching up to 20°C (69°F). This month sees 82 mm (3.2 in) of precipitation spread over approximately 10 days, accompanied by a high average humidity of 88%.

January Temperature in Crestline

In January in Crestline, the average temperature is -2°C (29°F), with maximums reaching 20°C (69°F) and minimums dropping as low as -24°C (-10°F). Travelers should prepare for a wide range of temperatures and dress in layers to stay comfortable.

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

The chart illustrates January temperature patterns in Crestline, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crestline, January typically has an average temperature of -2°C (29°F), with highs reaching up to 20°C (69°F) and lows dropping to around -24°C (-10°F).

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

January Precipitation in Crestline

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

January Precipitation Trends in Crestline

The chart displays monthly precipitation patterns in Crestline, 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 Crestline, 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 Crestline

In Crestline in January, humidity is 88%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill in the air that penetrates layers of clothing, making outdoor activities challenging and potentially uncomfortable for travelers.

January Average Humidity in Crestline

This chart illustrates the average monthly humidity levels in Crestline, 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 Crestline is approximately 88%, 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 Crestline

In Crestline 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 Crestline, you can check the information here.

Maximum UV Index Levels in Crestline for January

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

Data source: Crestline 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 Crestline Compares to Other Months

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

This table compares monthly weather conditions in Crestline, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	82 mm (3.2 inches)	88%	moderate
February Weather	0°C (32°F)	102 mm (4.0 inches)	87%	moderate
March Weather	5°C (40°F)	103 mm (4.1 inches)	87%	high
April Weather	10°C (50°F)	126 mm (5.0 inches)	87%	very high
May Weather	17°C (62°F)	129 mm (5.1 inches)	81%	very high
June Weather	21°C (71°F)	146 mm (5.7 inches)	82%	very high
July Weather	23°C (74°F)	124 mm (4.9 inches)	81%	very high
August Weather	22°C (72°F)	81 mm (3.2 inches)	78%	very high
September Weather	20°C (67°F)	79 mm (3.1 inches)	78%	very high
October Weather	14°C (57°F)	98 mm (3.9 inches)	82%	high
November Weather	5°C (41°F)	96 mm (3.8 inches)	89%	moderate
December Weather	1°C (35°F)	91 mm (3.6 inches)	86%	low