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January Weather in Mountain House, United States

Last updated: June 24, 2025

In Mountain House, United States, the average temperature in January is a cool 10°C (50°F). Visitors can expect a minimum temperature of -1°C (30°F) and a pleasant maximum of 23°C (74°F). With an average precipitation of 92 mm (3.6 in) over 9 days, this month sees a fair share of rain, while the air remains relatively humid at 82%. Prepare accordingly to make the most of your trip!

January Temperature in Mountain House

In January in Mountain House, the average temperature is 10°C (50°F). Maximums can reach 23°C (74°F), and minimums can be as low as -1°C (30°F). Be prepared for a range of weather conditions if you're planning to travel during this month.

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

The chart illustrates January temperature patterns in Mountain House, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mountain House, January typically has an average temperature of 10°C (50°F), with highs reaching up to 23°C (74°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec495254606572757571645549
Data source: Temperature data for Mountain House generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Mountain House

In Mountain House in January, the precipitation amount is 92 mm (3.6 in) during 9 days, indicating a relatively wet period for the region.

January Precipitation Trends in Mountain House

The chart displays monthly precipitation patterns in Mountain House, 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 House, January typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec92767531161002223378
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Mountain House

In Mountain House in January, humidity is 82%. With an average temperature of 10°C (50°F), this humidity feels like a dense, heavy blanket wrapping around you, making every step feel sluggish and the air thick, which can make traveling quite uncomfortable.

January Average Humidity in Mountain House

This chart illustrates the average monthly humidity levels in Mountain House, 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 House is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mountain House

In Mountain House 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 Mountain House, you can check the information here.

Maximum UV Index Levels in Mountain House for January

The chart shows the monthly maximum UV Index (UVI) for Mountain House 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 House typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589111111109753
Data source: Mountain House 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 House Compares to Other Months

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

This table compares monthly weather conditions in Mountain House, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)92 mm (3.6 inches)82%moderate
February Weather11°C (52°F)76 mm (3.0 inches)84%moderate
March Weather12°C (55°F)75 mm (2.9 inches)82%very high
April Weather16°C (60°F)31 mm (1.2 inches)78%very high
May Weather19°C (66°F)16 mm (0.6 inches)71%extreme
June Weather22°C (73°F)1 mm (0.0 inches)64%extreme
July Weather24°C (75°F)0 mm (0.0 inches)58%extreme
August Weather24°C (75°F)0 mm (0.0 inches)54%very high
September Weather22°C (71°F)2 mm (0.1 inches)55%very high
October Weather18°C (64°F)22 mm (0.9 inches)62%high
November Weather13°C (55°F)33 mm (1.3 inches)78%moderate
December Weather9°C (49°F)78 mm (3.1 inches)80%moderate

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