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
January's commencement is accompanied by an average high-temperature of a still refreshing 56.7°F (13.7°C), diverging marginally from December's 55.8°F (13.2°C). During the nights in January, Los Altos Hills experiences a consistent average temperature of 46.4°F (8°C).Humidity
In January, the average relative humidity is 73%.Rainfall
In Los Altos Hills, in January, during 7.8 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Los Altos Hills, during the entire year, the rain falls for 57.5 days and collects up to 4.76" (121mm) of precipitation.Daylight
The average length of the day in January is 9h and 56min.On the first day of January in Los Altos Hills, sunrise is at 7:22 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:31 pm PST.
Sunshine
In January, the average sunshine is 6.3h.UV index
The average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during January translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How much does it rain in January?
What is the average length of the day in January in Los Altos Hills?
When are sunrise and sunset in January?
How many hours of sunshine does Los Altos Hills have in January?
How high is the UV index in January?
Average temperature in January
Los Altos Hills, CA
- Average high temperature in January: 56.7°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in January: 46.4°F
The months with the highest average low temperature are August and September (56.7°F).
The coldest months (with the lowest average low temperature) are January and February (46.4°F).
Average pressure in January
Los Altos Hills, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in January
Los Altos Hills, CA
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Los Altos Hills, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is October (68%).
Average rainfall in January
Los Altos Hills, CA
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Los Altos Hills, CA
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is June (0.9 days).
Average daylight in January /
Average sunshine in January
Los Altos Hills, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Los Altos Hills, CA
- Average sunshine days in January: 21.8 days
The months with the most sunshine days are June and July (26.3 days).
The month with the least sunshine days is March (18.3 days).
Average UV index in January
Los Altos Hills, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
Los Altos Hills, CA
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Los Altos 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).
Los Altos Hills, California, USA
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