Yes
Based on the weather in San Francisco, CA 94158, USA as of January 21, 2021 9:20pm local time
Why? Because it's quite chilly.
Now
Overcast
Temp: 49°F10°C
Wind: 5 MPH8 KPH
Precipitation: None
Temp: 49°F10°C
Wind: 5 MPH8 KPH
Precipitation: None
Today
Next 2 hours: Yes
Next 4 hours: Yes
Next 8 hours: Yes
Tomorrow
Yes
Light rain in the morning and afternoon.Low of 47°F9°C, High of 53°F12°C
Wind: 9 MPH15 KPH
Precipitation: 87% rain