January weather forecast and climate
Sun Valley, CA

Weather in January

January, the same as December, is another enjoyable winter month in Sun Valley, California, with average temperature varying between 63.5°F (17.5°C) and 47.5°F (8.6°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a still comfortable 63.5°F (17.5°C). In January, in Sun Valley, the average low-temperature is 47.5°F (8.6°C).

Humidity

In January, the average relative humidity in Sun Valley is 52%.

Rainfall

In Sun Valley, during January, the rain falls for 4.1 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 40.1 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

Daylight

The average length of the day in Sun Valley is 10.2h.

Sunshine

January, February and December, with an average of 6.9h of sunshine, are months with the least sunshine in Sun Valley.

UV index

In January, the average daily maximum UV index in Sun Valley is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in January in Sun Valley?

In January, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 47.5°F (8.6°C).

What is the average humidity in January in Sun Valley?

In Sun Valley, California, the average relative humidity in January is 52%.

How many days does it rain in January in Sun Valley?

In Sun Valley, in January, it is raining for 4.1 days, with typically 0.94" (24mm) of accumulated precipitation.

What is the average length of the day in January in Sun Valley?

The average length of the day in January in Sun Valley is 10.2h.

What is the month with the least sunshine in Sun Valley?

Months with the least sunshine in Sun Valley, California, are January, February and December, with an average of 6.9h of sunshine.

How long on average sun shines in January in Sun Valley?

In Sun Valley, California, the average sunshine in January is 6.9h.

How high is the UV index in January in Sun Valley?

The average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in January
Sun Valley, CA

Average temperature in January - Sun Valley, CA
  • Average high temperature in January: 63.5°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in January: 47.5°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).

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Average pressure in January
Sun Valley, CA

Average pressure in January - Sun Valley, CA
  • Average pressure in January: 30.11"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in January
Sun Valley, CA

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

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in January
Sun Valley, CA

Average humidity in January - Sun Valley, CA
  • Average humidity in January: 52%

The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (48%).

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Average rainfall in January
Sun Valley, CA

Average rainfall in January - Sun Valley, CA
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in January
Sun Valley, CA

Average rainfall days in January - Sun Valley, CA
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is March (5.2 days).
The month with the least rainy days is June (1 days).

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Average daylight in January /
Average sunshine in January
Sun Valley, CA

Average daylight in January / Average sunshine in January - Sun Valley, CA
  • Average daylight in January: 10.2h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in January: 6.9h

Months with the most sunshine are June, July and August (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 6.9).

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Average sunshine days in January
Sun Valley, CA

Average sunshine days in January - Sun Valley, CA
  • Average sunshine days in January: 25.9 days

The month with the most sunshine days is October (27.1 days).
The month with the least sunshine days is February (22.9 days).

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Average UV index in January
Sun Valley, CA

Average UV index in January - Sun Valley, CA
  • Average UV index in January: 4

Months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
Sun Valley, CA

Average cloud cover in January - Sun Valley, CA
  • Average cloud cover in January: 20

Months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in January
Sun Valley, CA

Average visibility in January - Sun Valley, 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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