January weather forecastPalo Alto, CA
January
Weather in January
January, the same as December, in Palo Alto, California, is another refreshing winter month, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 57.6°F (14.2°C).Temperature
Palo Alto signifies an average high-temperature of a still mild 57.6°F (14.2°C) in January, closely mirroring the 56.3°F (13.5°C) of December. In January, Palo Alto's temperature tends to fall to an average low of 45.1°F (7.3°C) during the night.Humidity
In January, the average relative humidity is 72%.Rainfall
In Palo Alto, in January, it is raining for 9.3 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 63.3 rainfall days, and 9.53" (242mm) of precipitation is accumulated.Daylight
The average length of the day in January in Palo Alto is 9h and 56min.On the first day of January, 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 Palo Alto, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in January leads to these recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 54min
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 18min
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).
