January weather forecast and climate
South San Jose Hills, CA

Weather in January

January, the same as December, is another enjoyable winter month in South San Jose Hills, California, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 50.2°F (10.1°C).

Temperature

In South San Jose Hills, the average high-temperature is relatively the same as in December - a still comfortable 66.9°F (19.4°C). In South San Jose Hills, in January, the average low-temperature is 50.2°F (10.1°C).

Humidity

In South San Jose Hills, the average relative humidity is 50%.

Rainfall

In South San Jose Hills, in January, during 4.8 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, in South San Jose Hills, there are 43.8 rainfall days, and 7.01" (178mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 10.2h.

Sunshine

In January, the average sunshine is 6.9h.

UV index

Months with the lowest UV index in South San Jose Hills are January, February, November and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
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. 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 South San Jose Hills?

The average high-temperature, in January, in South San Jose Hills, California, is 66.9°F (19.4°C), while the average low-temperature is 50.2°F (10.1°C).

What is the average humidity in January in South San Jose Hills?

The average relative humidity in January in South San Jose Hills is 50%.

How much does it rain in South San Jose Hills in January?

In South San Jose Hills, California, during January, the rain falls for 4.8 days and regularly aggregates up to 1.26" (32mm) of precipitation.

What is the average length of the day in January in South San Jose Hills?

In South San Jose Hills, the average length of the day in January is 10.2h.

How many hours of sunshine does South San Jose Hills have in January?

The average sunshine in January is 6.9h.

What are the months with the lowest UV index in South San Jose Hills?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in South San Jose Hills.

How high is the UV index in January in South San Jose Hills?

In January, the average daily maximum UV index is 4. 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
South San Jose Hills, CA

Average temperature in January - South San Jose Hills, CA
  • Average high temperature in January: 66.9°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is December (64.9°F).

  • Average low temperature in January: 50.2°F

The month with the highest average low temperature is August (66.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).

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Average pressure in January
South San Jose Hills, CA

Average pressure in January - South San Jose Hills, CA
  • Average pressure in January: 30.1"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in January
South San Jose Hills, CA

Average wind speed in January - South San Jose Hills, CA
  • Average wind speed in January: 5.3mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity in January
South San Jose Hills, CA

Average humidity in January - South San Jose Hills, CA
  • Average humidity in January: 50%

The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (46%).

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Average rainfall in January
South San Jose Hills, CA

Average rainfall in January - South San Jose Hills, CA
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is December (1.61").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in January
South San Jose Hills, CA

Average rainfall days in January - South San Jose Hills, CA
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.1 days).

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Average daylight in January /
Average sunshine in January
South San Jose Hills, CA

Average daylight in January / Average sunshine in January - South San Jose Hills, 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

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.8).

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Average sunshine days in January
South San Jose Hills, CA

Average sunshine days in January - South San Jose Hills, CA
  • Average sunshine days in January: 25.3 days

The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in January
South San Jose Hills, CA

Average UV index in January - South San Jose Hills, CA
  • Average UV index in January: 4

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in January
South San Jose Hills, CA

Average cloud cover in January - South San Jose Hills, CA
  • Average cloud cover in January: 20

Months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in January
South San Jose Hills, CA

Average visibility in January - South San Jose Hills, 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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