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, Yes, you do need a jacket.

Why? Because it's cold. simple as that.

Based on the weather in Juneau, AK, USA as of May 25, 2020 7:15am local time.

Now

Possible Light Rain
Temp: 45°F7°C
Wind: 2 MPH3 KPH
Precipitation: 54% rain

Today

Next 2 hours: Yes

Next 4 hours: Yes

Next 8 hours: Yes

Tomorrow

Yes

Light rain in the morning and afternoon.
Low of 46°F8°C, High of 53°F12°C
Wind: 4 MPH7 KPH
Precipitation: 90% rain