Sunnyvale weather in January (California, United States of America)

How is January weather typically in Sunnyvale? Check out this detailed guide to the month’s weather conditions.

Temperatures

In January, Sunnyvale usually has moderate temperatures and moderate rainfall. January is part of winter. During the daylight hours, temperatures often reach 16°C. After dark they usually decrease to around 5°C.

Precipitation

Sunnyvale in January usually receives moderate rainfall, averaging around 54 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 8 days of the month will see rainfall.

Average sunshine

The month experiences a moderate amount of sunlight, with 186 hours hours. A nice balance between sunshine and clouds.

If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Sunnyvale. April, May, June, July, August, September and October typically offer the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Sunnyvale climate page with graphs.

 

Sunnyvale, monthly averages in January

Min Temperature 5°C  

Max Temperature 16°C  

Chance of Rain 27%  

Precipitation 54 mm  

Rainy days 8 days  

Humidity 80% *  

Sunshine 186 hours *  

Percentage Sunshine 61% *  

* Data from: San Francisco, the United States of America (41 KM, 25 Miles).

Where to go in the United States of America in January

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Sunnyvale.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.