THINGS TO DO · YOUTUBE SHORT
Exploring Downtown Sunnyvale with my fiancé’s cousin 🤗
A local activity Short shared by Belugabee.
Watch on YouTube ↗
Weather · December
Sunnyvale weather in December
Average highs of 59°F, lows of 42°F and 2.5 in of rain, from 30 years of weather records.
December is Sunnyvale’s coldest month, with average highs of 59°F and lows of 42°F. That is 7° cooler than November, and 10° below the yearly average high.
- Average high
- 59°F
- Average low
- 42°F
- Precipitation
- 2.5 in
- Wet days
- 11
- Sunrise · sunset
- 7:15 AM · 4:51 PM
December across the year
High and low Rain
What to wear in December
- Cool days: a warm jacket and long pants, plus layers for the swing between morning and afternoon.
- Pack an umbrella or rain jacket: rain or snow falls on about 11 days this month.
December is good for
What’s on in Sunnyvale in December
- Breakfast with SantaSaturday, December 5 · 8:30-11:00 a.m. · Sunnyvale Senior Center
- Menorahs & Miracles at Children's Discovery MuseumSunday, December 6 · 10:00 a.m.-2:00 p.m. · Children's Discovery Museum of San Jose
- Crafts with Santa at Sunnyvale Public LibraryThursday, December 10 · 11:00 a.m.-noon · Sunnyvale Public Library, Program Room
- Evening of Cultural Arts: The Best Intentions Motown ChristmasSunday, December 20 · 7:00 p.m. · Sunnyvale Theatre, Community Center
- Winter Magic Show at Lakewood Branch LibraryMonday, December 21 · 5:00-6:00 p.m. · Lakewood Branch Library and Learning Center, North Sunnyvale
- Noon Year's Eve at Children's Discovery MuseumThursday, December 31 · Ball drops at noon, 1:00 and 2:00 p.m. · Children's Discovery Museum of San Jose
See all upcoming events and school days off.
Around Sunnyvale
See Sunnyvale
A look around town before you go.
THINGS TO DO · YOUTUBE SHORT
Is Downtown Sunnyvale Worth Visiting?
A local activity Short shared by Abdul’s World | Bay Area Travel.
Watch on YouTube ↗December compared with the months around it
Planning a trip? See the best time to visit Sunnyvale and today’s forecast.
Questions
How hot does it get in Sunnyvale in December?
Average highs are 59°F and average lows 42°F, for a daily mean of 51°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Sunnyvale in December?
December averages 2.5 in of precipitation over about 11 days with at least 0.01 in. It is the 3rd wettest month of the year.
What time is sunset in Sunnyvale in December?
Around mid-December the sun rises about 7:15 AM and sets about 4:51 PM, for roughly 9.6 hours of daylight.
Is December a good time to visit Sunnyvale?
The mildest months for visiting are June, July, August. December is cool, with Christmas lights and New Year’s Eve events.
NOAA U.S. Climate Normals 1991–2020, Moffett Federal Airfield station (2.5 mi from downtown). Sunrise and sunset are calculated for December 15 at the city’s coordinates.