No

Why? Because you should be inside at home! #StayHome

But if you absolutely had to go out to get groceries, medication or other essential travel, No, you don't need a jacket.

Based on the weather in Pasadena, CA 91108, USA as of May 26, 2020 8:38pm local time.

Now

Clear
Temp: 75°F24°C
Wind: 2 MPH4 KPH
Precipitation: None

Today

Next 2 hours: No

Next 4 hours: No

Next 8 hours: No

Tomorrow

No

Clear throughout the day.
Low of 61°F16°C, High of 88°F31°C
Wind: 5 MPH7 KPH
Precipitation: 1% rain