Yes

you do need a jacket based on the weather in Anchorage, AK, USA 1 second ago

Why? Because the drizzle is not enough rain to call it "raining," but enough to make you a little soggy and it's cool enough your breath is visible, but your nose isn’t red yet!
47°F8°C & Drizzle

Wind is 5 mph8 km/h from the Southwest, gusting to 10 mph16 km/h
April 28
11pm46°F8°C5 mph8 km/h SouthwestCloudy
April 29
12am46°F8°C5 mph7 km/h SouthwestCloudy
1am44°F7°C4 mph6 km/h SouthwestCloudy
2am42°F5°C3 mph4 km/h SouthwestCloudy
3am40°F5°C2 mph3 km/h SoutheastCloudy
4am40°F4°C2 mph4 km/h SoutheastMostly Cloudy
5am39°F4°C3 mph5 km/h SoutheastMostly Cloudy
6am38°F3°C3 mph5 km/h EastCloudy
7am38°F3°C3 mph4 km/h EastCloudy
8am38°F3°C3 mph4 km/h EastCloudy
9am38°F3°C3 mph5 km/h NortheastCloudy
10am37°F3°C3 mph4 km/h NortheastCloudy
DateLowHighWindDayNight
April 2840°F4°C47°F8°C4 mph7 km/h from SouthwestDrizzleDrizzle
April 2937°F3°C47°F9°C7 mph11 km/h from EastDrizzleDrizzle
April 3038°F3°C47°F8°C5 mph9 km/h from NortheastDrizzleMostly Cloudy
May 137°F3°C49°F10°C5 mph8 km/h from NorthCloudyPartly Cloudy
May 236°F2°C49°F10°C5 mph8 km/h from SouthMostly CloudyMostly Cloudy
May 336°F2°C49°F9°C5 mph8 km/h from SouthMostly CloudyMostly Cloudy
May 437°F3°C51°F10°C5 mph9 km/h from NortheastMostly CloudyCloudy

Yes

Low of 37°F3°C, High of 47°F9°C
Wind: 7 mph11 km/h
Precipitation: 75% rain

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