January Weather in Crestline, United States

Last updated: June 24, 2025

In January, the average temperature in Crestline, United States hovers around 9°C (49°F). Expect chilly nights with minimums dropping to -5°C (24°F), while daytime highs can reach up to 24°C (76°F). With 51 mm (2.0 in) of precipitation spread over 6 days, the air feels damp, contributing to an average humidity level of 76%.

January Temperature in Crestline

In January, in Crestline, the average temperature is 9°C (49°F). Maximums can reach 24°C (76°F), while minimums can drop as low as -5°C (24°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their visit.

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 9°C (49°F), with highs reaching up to 24°C (76°F) and lows dropping to around -5°C (24°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 precipitation amount is 51 mm (2.0 in) over the course of 6 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 51 mm (2.0 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 Crestline

In Crestline in January, humidity is 76%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making outdoor adventures a bit uncomfortable as the dampness seeps into your clothes and lingers in the air, often leading to a sense of coolness that can be refreshing but also dampens the joy of exploration.

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 76%, 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 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 Crestline for better planning.

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 4, 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	9°C (49°F)	51 mm (2.0 inches)	76%	moderate
February Weather	9°C (49°F)	56 mm (2.2 inches)	80%	high
March Weather	11°C (52°F)	52 mm (2.1 inches)	69%	very high
April Weather	15°C (60°F)	24 mm (0.9 inches)	57%	extreme
May Weather	17°C (64°F)	13 mm (0.5 inches)	45%	extreme
June Weather	23°C (73°F)	4 mm (0.1 inches)	34%	extreme
July Weather	26°C (79°F)	12 mm (0.5 inches)	29%	extreme
August Weather	26°C (79°F)	11 mm (0.4 inches)	28%	extreme
September Weather	23°C (74°F)	9 mm (0.4 inches)	41%	very high
October Weather	18°C (65°F)	8 mm (0.3 inches)	54%	very high
November Weather	14°C (57°F)	19 mm (0.8 inches)	68%	moderate
December Weather	9°C (49°F)	56 mm (2.2 inches)	75%	moderate