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
The ushering in of January brings an average high-temperature of a still refreshing 57.6°F (14.2°C), closely mirroring the 56.3°F (13.5°C) of December. During the January nights, an average temperature of 45.1°F (7.3°C) is observed in Palo Alto.Humidity
In January, the average relative humidity is 72%.Rainfall
In Palo Alto, during January, the rain falls for 9.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, in Palo Alto, there are 63.3 rainfall days, and 9.53" (242mm) of precipitation is accumulated.Daylight
The average length of the day in January is 9h and 56min.On the first day of January in Palo Alto, California, 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
In January, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in January converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the temperature in January in Palo Alto?
What is the average humidity in January in Palo Alto?
How much does it rain in Palo Alto in January?
How many hours of daylight does Palo Alto have in January?
When is the sunrise / sunset in January in Palo Alto?
How many hours of sunshine does Palo Alto have in January?
What is the UV index intensity in January in Palo Alto?
Average temperature in January
Palo Alto, CA
- Average high temperature in January: 57.6°F
The warmest months (with the highest average high temperature) are July and August (77.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in January: 45.1°F
The month with the highest average low temperature is August (57°F).
The coldest months (with the lowest average low temperature) are January and February (45.1°F).
Average pressure in January
Palo Alto, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).
Average wind speed in January
Palo Alto, CA
- Average wind speed in January: 5.2mph
The windiest months (with the highest average wind speed) are April and May (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.9mph).
Average humidity in January
Palo Alto, CA
- Average humidity in January: 72%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (65%).
Average rainfall in January
Palo Alto, CA
- Average rainfall in January: 1.61"
The wettest month (with the highest rainfall) is February (2.01").
The driest month (with the least rainfall) is July (0").
Average rainfall days in January
Palo Alto, CA
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.6 days).
Average daylight in January /
Average sunshine in January
Palo Alto, 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 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Palo Alto, CA
- Average sunshine days in January: 21.3 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (18 days).
Average UV index in January
Palo Alto, CA
- Average UV index in January: 4
The months with the highest UV index are April, May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
Palo Alto, CA
- Average cloud cover in January: 30
The months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in January
Palo Alto, 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).
Palo Alto, California, USA
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