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 you're not freezing, but you’ll definitely start complaining if it lasts much longer!
41°F5°C & Drizzle

Wind is 6 mph9 km/h from the North, gusting to 13 mph21 km/h
April 30
3pm42°F5°C6 mph10 km/h NorthRain
4pm43°F6°C7 mph11 km/h NorthRain
5pm44°F7°C7 mph12 km/h NorthCloudy
6pm46°F8°C6 mph10 km/h NortheastCloudy
7pm47°F8°C5 mph8 km/h EastCloudy
8pm48°F9°C5 mph8 km/h EastMostly Cloudy
9pm49°F9°C6 mph10 km/h SoutheastMostly Cloudy
10pm49°F10°C7 mph11 km/h SoutheastMostly Cloudy
11pm49°F9°C7 mph12 km/h SoutheastMostly Cloudy
May 1
12am48°F9°C7 mph12 km/h SoutheastCloudy
1am46°F8°C5 mph8 km/h SoutheastCloudy
2am45°F7°C4 mph6 km/h SoutheastCloudy
DateLowHighWindDayNight
April 3038°F3°C49°F10°C6 mph9 km/h from NortheastRainCloudy
May 137°F3°C48°F9°C4 mph7 km/h from NorthCloudyDrizzle
May 239°F4°C49°F10°C6 mph10 km/h from SoutheastPartly CloudyMostly Cloudy
May 336°F2°C49°F10°C4 mph7 km/h from SouthDrizzlePartly Cloudy
May 437°F3°C49°F9°C4 mph7 km/h from NortheastCloudyCloudy
May 539°F4°C50°F10°C4 mph7 km/h from SouthDrizzleMostly Cloudy
May 638°F3°C51°F11°C5 mph8 km/h from SouthPartly CloudyMostly Cloudy

Yes

Low of 37°F3°C, High of 48°F9°C
Wind: 4 mph7 km/h
Precipitation: None

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