Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
In the transition from December to January, South San Jose Hills reports an average high-temperature of a still enjoyable 66.9°F (19.4°C), indicating a close resemblance to the prior month. January witnesses an average nighttime temperature of 50.2°F (10.1°C).Humidity
The average relative humidity in January is 50%.Rainfall
In South San Jose Hills, in January, it is raining for 4.8 days, with typically 1.26" (32mm) of accumulated precipitation. In South San Jose Hills, during the entire year, the rain falls for 43.8 days and collects up to 7.01" (178mm) of precipitation.Daylight
In January, the average length of the day is 10h and 11min.On the first day of the month, sunrise is at 6:56 am and sunset at 4:53 pm. On the last day of January, sunrise is at 6:49 am and sunset at 5:20 pm PST.
Sunshine
In South San Jose Hills, the average sunshine in January is 6.9h.UV index
The months with the lowest UV index in South San Jose Hills, California, 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 vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 4 in January translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in January in South San Jose Hills?
What is the average humidity in January in South San Jose Hills?
How much does it rain in South San Jose Hills in January?
What is the average length of the day in January in South San Jose Hills?
When is the sunrise / sunset in January in South San Jose Hills?
How many hours of sunshine does South San Jose Hills have in January?
What is the month with the lowest UV index in South San Jose Hills?
How high is the UV index in January in South San Jose Hills?
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).
Average pressure in January
South San Jose Hills, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
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).
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%).
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").
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).
Average daylight in January /
Average sunshine in January
South San Jose Hills, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).
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).
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).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in January
South San Jose Hills, CA
- Average cloud cover in January: 20
The 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).
Average visibility in January
South San Jose Hills, 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).
South San Jose Hills, California, USA
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