January weather forecast and climate
Spring Valley, CA

Weather in January

January, like December, in Spring Valley, California, is another comfortable winter month, with average temperature fluctuating between 49.6°F (9.8°C) and 66.4°F (19.1°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a still enjoyable 66.4°F (19.1°C). In January, in Spring Valley, the average low-temperature is 49.6°F (9.8°C).

Humidity

In January, the average relative humidity is 56%.

Rainfall

In January, in Spring Valley, the rain falls for 2.8 days. Throughout January, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 33 rainfall days, and 2.52" (64mm) of precipitation is accumulated.

Daylight

In Spring Valley, the average length of the day in January is 10.3h.

Sunshine

The average sunshine in January is 6.8h.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Spring Valley, California. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in January in Spring Valley?

In Spring Valley, California, in January, the average high-temperature is 66.4°F (19.1°C), and the average low-temperature is 49.6°F (9.8°C).

What is the average humidity in January in Spring Valley?

The average relative humidity in January is 56%.

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

In Spring Valley, in January, it is raining for 2.8 days, with typically 0.2" (5mm) of accumulated precipitation.

How many hours of daylight does Spring Valley have in January?

The average length of the day in January in Spring Valley, California, is 10.3h.

How many hours of sunshine does Spring Valley have in January?

In January, the average sunshine in Spring Valley is 6.8h.

When is the lowest UV index in Spring Valley?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Spring Valley, California.

What is the UV index reading in January in Spring Valley?

The average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in January
Spring Valley, CA

Average temperature in January - Spring Valley, CA
  • Average high temperature in January: 66.4°F

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (64.4°F).

  • Average low temperature in January: 49.6°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in January
Spring Valley, CA

Average pressure in January - Spring Valley, CA
  • Average pressure in January: 30.09"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in January
Spring Valley, CA

Average wind speed in January - Spring Valley, CA
  • Average wind speed in January: 5mph

The windiest month (with the highest average wind speed) is April (5.6mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).

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Average humidity in January
Spring Valley, CA

Average humidity in January - Spring Valley, CA
  • Average humidity in January: 56%

The month with the highest relative humidity is May (67%).
The month with the lowest relative humidity is November (54%).

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Average rainfall in January
Spring Valley, CA

Average rainfall in January - Spring Valley, CA
  • Average rainfall in January: 0.2"

The wettest month (with the highest rainfall) is February (0.55").
The driest months (with the least rainfall) are June, July and October (0.04").

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Average rainfall days in January
Spring Valley, CA

Average rainfall days in January - Spring Valley, CA
  • Average rainfall days in January: 2.8 days

The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (0.8 days).

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

Average daylight in January / Average sunshine in January - Spring Valley, CA
  • Average daylight in January: 10.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in January: 6.8h

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.7).

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Average sunshine days in January
Spring Valley, CA

Average sunshine days in January - Spring Valley, CA
  • Average sunshine days in January: 27.1 days

The month with the most sunshine days is October (28.9 days).
The month with the least sunshine days is February (23.4 days).

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Average UV index in January
Spring Valley, CA

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

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in January
Spring Valley, CA

Average cloud cover in January - Spring Valley, CA
  • Average cloud cover in January: 21

Months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in January
Spring Valley, CA

Average visibility in January - Spring 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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