January Weather in Mountain View, United States

Last updated: June 24, 2025

In January, the average temperature in Mountain View, United States hovers around 4°C (39°F). Expect a minimum of -15°C (5°F) and a maximum reaching 22°C (71°F). During this month, precipitation averages 78 mm (3.1 in) over 8 days, contributing to a notably high average humidity of 84%.

January Temperature in Mountain View

In January in Mountain View, the average temperature is 4°C (39°F). The maximum can reach 22°C (71°F), and the minimum can be as low as -15°C (5°F). Be prepared for a wide range of weather conditions when traveling during this month.

January Weather in Mountain View: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mountain View, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mountain View, January typically has an average temperature of 4°C (39°F), with highs reaching up to 22°C (71°F) and lows dropping to around -15°C (5°F).

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

January Precipitation in Mountain View

In Mountain View in January, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.

January Precipitation Trends in Mountain View

The chart displays monthly precipitation patterns in Mountain View, 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 Mountain View, January typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 8 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 Mountain View

In Mountain View in January, humidity is 84%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions uncomfortable and demanding more layers than you anticipate while traveling.

January Average Humidity in Mountain View

This chart illustrates the average monthly humidity levels in Mountain View, 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 Mountain View 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 Mountain View

In Mountain View 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 Mountain View for better planning.

Maximum UV Index Levels in Mountain View for January

The chart shows the monthly maximum UV Index (UVI) for Mountain View 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 Mountain View typically reaches 4, which falls under the moderate exposure category.

Data source: Mountain View 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 Mountain View Compares to Other Months

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

This table compares monthly weather conditions in Mountain View, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	78 mm (3.1 inches)	84%	moderate
February Weather	6°C (42°F)	131 mm (5.2 inches)	83%	high
March Weather	11°C (53°F)	137 mm (5.4 inches)	81%	very high
April Weather	15°C (59°F)	144 mm (5.7 inches)	81%	very high
May Weather	20°C (69°F)	174 mm (6.9 inches)	83%	extreme
June Weather	25°C (77°F)	100 mm (3.9 inches)	83%	extreme
July Weather	27°C (81°F)	89 mm (3.5 inches)	81%	extreme
August Weather	26°C (79°F)	116 mm (4.6 inches)	74%	very high
September Weather	23°C (75°F)	82 mm (3.2 inches)	71%	very high
October Weather	17°C (62°F)	103 mm (4.1 inches)	76%	high
November Weather	9°C (49°F)	77 mm (3.0 inches)	84%	moderate
December Weather	7°C (45°F)	97 mm (3.8 inches)	88%	moderate