January weather forecast and climate
Foresthill, CA

Weather in January

January is a cool winter month in Foresthill, California, with average temperature fluctuating between 51.3°F (10.7°C) and 35.6°F (2°C).

Temperature

In January, the average high-temperature is practically the same as in December - a cool 51.3°F (10.7°C). In January, the average low-temperature is 35.6°F (2°C).

Humidity

The average relative humidity in Foresthill is 70%.

Rainfall

In Foresthill, during 10.2 rainfall days, 5.83" (148mm) of precipitation is typically accumulated. Throughout the year, in Foresthill, there are 85.5 rainfall days, and 35.94" (913mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Foresthill are January through May, November and December. In Foresthill, during January, snow falls for 3.9 days and regularly aggregates up to 8.58" (218mm) of snow. In Foresthill, during the entire year, snow falls for 22.8 days, and aggregates up to 56.06" (1424mm) of snow.

Daylight

The average length of the day in Foresthill is 9.8h.

Sunshine

With an average of 5.7h of sunshine, January has the least sunshine of the year in Foresthill, California.

UV index

In January, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Foresthill?

In Foresthill, California, in January, the average high-temperature is 51.3°F (10.7°C), and the average low-temperature is 35.6°F (2°C).

What is the average humidity in January in Foresthill?

The average relative humidity in January in Foresthill is 70%.

How many days does it rain in January in Foresthill?

In January, in Foresthill, the rain falls for 10.2 days. Throughout January, 5.83" (148mm) of precipitation is accumulated.

How many days does it snow in January in Foresthill?

In Foresthill, California, in January, during 3.9 snowfall days, 8.58" (218mm) of snow is typically accumulated.

How many hours of daylight does Foresthill have in January?

In January, the average length of the day in Foresthill, California, is 9.8h.

What is the month with the least sunshine in Foresthill?

The month with the least sunshine in Foresthill, California, is January, with an average of 5.7h of sunshine.

How many hours of sunshine does Foresthill have in January?

In Foresthill, California, the average sunshine in January is 5.7h.

What is the UV index reading in January in Foresthill?

In Foresthill, the average daily maximum UV index in January is 3. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in January
Foresthill, CA

Average temperature in January - Foresthill, CA
  • Average high temperature in January: 51.3°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (49.1°F).

  • Average low temperature in January: 35.6°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

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Average pressure in January
Foresthill, CA

Average pressure in January - Foresthill, CA
  • Average pressure in January: 30.17"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in January
Foresthill, CA

Average wind speed in January - Foresthill, CA
  • Average wind speed in January: 5.7mph

The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in January
Foresthill, CA

Average humidity in January - Foresthill, CA
  • Average humidity in January: 70%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is July (38%).

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Average rainfall in January
Foresthill, CA

Average rainfall in January - Foresthill, CA
  • Average rainfall in January: 5.83"

The wettest month (with the highest rainfall) is March (7.01").
The driest month (with the least rainfall) is July (0.04").

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Average rainfall days in January
Foresthill, CA

Average rainfall days in January - Foresthill, CA
  • Average rainfall days in January: 10.2 days

The month with the highest number of rainy days is March (13.9 days).
The month with the least rainy days is July (1.4 days).

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Average snowfall in January
Foresthill, CA

Average snowfall in January - Foresthill, CA
  • Average snowfall in January: 8.58"

The month with the highest snowfall is March (17.87").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Foresthill, CA

Average snowfall days in January - Foresthill, CA
  • Average snowfall days in January: 3.9 days

The month with the highest number of snowfall days is March (5.4 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Foresthill, CA

Average daylight in January / Average sunshine in January - Foresthill, CA
  • Average daylight in January: 9.8h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 5.7h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 5.7h).

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Average sunshine days in January
Foresthill, CA

Average sunshine days in January - Foresthill, CA
  • Average sunshine days in January: 19 days

The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is March (13.5 days).

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Average UV index in January
Foresthill, CA

Average UV index in January - Foresthill, CA
  • Average UV index in January: 3

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are February, November and December (UV index 2).

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Average cloud cover in January
Foresthill, CA

Average cloud cover in January - Foresthill, CA
  • Average cloud cover in January: 36

The month with the most cloud cover is March (Cloud cover 43).
Months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in January
Foresthill, CA

Average visibility in January - Foresthill, CA
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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