January weather forecastMenlo Park, CA
January
Weather in January
January, like December, is a moderate winter month in Menlo Park, California, with an average temperature ranging between max 57.6°F (14.2°C) and min 45.1°F (7.3°C).Temperature
The beginning of January records an average high-temperature of a still refreshing 57.6°F (14.2°C), marking a negligible difference from December's 56.3°F (13.5°C). Throughout the month of January, Menlo Park expects an average low of 45.1°F (7.3°C).Humidity
In January, the average relative humidity is 72%.Rainfall
In Menlo Park, 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 is 9h and 56min.On the first day of the month, sunrise is at 7:23 am and sunset at 5:01 pm. On the last day of January, 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 Menlo Park, the average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 4 in January translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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
Menlo Park, 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).
