January weather forecast
Shasta Lake, CA

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Weather in January

January in Shasta Lake, California, is a fresh winter month, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 51.4°F (10.8°C).

Temperature

January's commencement is accompanied by an average high-temperature of a fresh 51.4°F (10.8°C), diverging marginally from December's 49.3°F (9.6°C). During the month of January, the temperature generally drops to a low average of 37°F (2.8°C).

Humidity

In January, the average relative humidity in Shasta Lake is 74%.

Rainfall

In January, in Shasta Lake, the rain falls for 12.4 days. Throughout January, 5.2" (132mm) of precipitation is accumulated. Throughout the year, there are 99.5 rainfall days, and 30.43" (773mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Shasta Lake. In Shasta Lake, in January, snow falls for 0.3 days, with typically accumulated 0.12" (3mm) of snow. In Shasta Lake, during the entire year, snow falls for 2.8 days and aggregates up to 1.57" (40mm) of snow.

Daylight

In January, the average length of the day in Shasta Lake is 9h and 40min.
On the first day of the month, sunrise is at 7:33 am and sunset at 4:52 pm. On the last day of January, in Shasta Lake, sunrise is at 7:20 am and sunset at 5:25 pm PST.

Sunshine

The average sunshine in January in Shasta Lake is 5.6h.

UV index

The average daily maximum UV index in January in Shasta Lake is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 3 during January translates into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Enhance your sun protection with tightly woven, yet airy clothing. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Shasta Lake in January?

During January, Shasta Lake experiences an average high-temperature of 51.4°F (10.8°C) and a low-temperature of 37°F (2.8°C).

What is the average humidity in January in Shasta Lake?

The average relative humidity in January in Shasta Lake is 74%.

How much does it rain in Shasta Lake in January?

In January, in Shasta Lake, the rain falls for 12.4 days. Throughout January, 5.2" (132mm) of precipitation is accumulated.

How many days does it snow in January in Shasta Lake?

In Shasta Lake, during January, snow falls for 0.3 days and regularly aggregates up to 0.12" (3mm) of snow.

How many hours of daylight does Shasta Lake have in January?

In Shasta Lake, California, the average day length in January is 9h and 40min.

When is the sunrise / sunset in January in Shasta Lake?

On the first day of January, sunrise is at 7:33 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:25 pm PST.

How long on average sun shines in January in Shasta Lake?

In January, the average sunshine duration in Shasta Lake is 5.6h.

How high is the UV index in January in Shasta Lake?

In January, the average daily maximum UV index in Shasta Lake is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Shasta Lake, CA

Average temperature in January - Shasta Lake, CA
  • Average high temperature in January: 51.4°F

The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is December (49.3°F).

  • Average low temperature in January: 37°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).

Average pressure in January
Shasta Lake, CA

Average pressure in January - Shasta Lake, CA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

Average wind speed in January
Shasta Lake, CA

Average wind speed in January - Shasta Lake, CA
  • Average wind speed in January: 4.7mph

The windiest months (with the highest average wind speed) are March, April, June and October (5.2mph).
The calmest months (with the lowest average wind speed) are August and November (4.4mph).

Average humidity in January
Shasta Lake, CA

Average humidity in January - Shasta Lake, CA
  • Average humidity in January: 74%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is August (35%).

Average rainfall in January
Shasta Lake, CA

Average rainfall in January - Shasta Lake, CA
  • Average rainfall in January: 5.2"

The wettest month (with the highest rainfall) is March (5.91").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in January
Shasta Lake, CA

Average rainfall days in January - Shasta Lake, CA
  • Average rainfall days in January: 12.4 days

The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.6 days).

Average snowfall in January
Shasta Lake, CA

Average snowfall in January - Shasta Lake, CA
  • Average snowfall in January: 0.12"

The month with the highest snowfall is December (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in January
Shasta Lake, CA

Average snowfall days in January - Shasta Lake, CA
  • Average snowfall days in January: 0.3 days

The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Shasta Lake, CA

Average daylight in January / Average sunshine in January - Shasta Lake, CA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in January
Shasta Lake, CA

Average sunshine days in January - Shasta Lake, CA
  • Average sunshine days in January: 17.1 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (12.7 days).

Average UV index in January
Shasta Lake, CA

Average UV index in January - Shasta Lake, CA
  • Average UV index in January: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 2).

Average cloud cover in January
Shasta Lake, CA

Average cloud cover in January - Shasta Lake, CA
  • Average cloud cover in January: 38

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

Average visibility in January
Shasta Lake, CA

Average visibility in January - Shasta Lake, CA
  • Average visibility in January: 6mi

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

Shasta Lake, California, USA

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