Yes

you do need a jacket based on the weather in Gardiner, MT 59030, USA 1 second ago

Why? Because it's FREEZING out there!
27°F-3°C & Partly Cloudy

Wind is 2 mph4 km/h from the NW, gusting to 5 mph8 km/h
April 18
11pm26°F-3°C3 mph4 km/h NMostly Clear
April 19
12am24°F-4°C3 mph4 km/h NMostly Clear
1am23°F-5°C3 mph5 km/h NMostly Clear
2am22°F-6°C3 mph5 km/h NMostly Clear
3am21°F-6°C3 mph4 km/h NMostly Clear
4am20°F-7°C3 mph5 km/h NPartly Cloudy
5am19°F-7°C3 mph5 km/h NWPartly Cloudy
6am18°F-8°C3 mph5 km/h NPartly Cloudy
7am17°F-9°C3 mph5 km/h NPartly Cloudy
8am16°F-9°C3 mph5 km/h NPartly Cloudy
9am16°F-9°C3 mph5 km/h NPartly Cloudy
10am18°F-8°C4 mph6 km/h NPartly Cloudy
DateLowHighWindDayNight
April 1813°F-11°C35°F2°C5 mph8 km/h from NWPartly CloudyPartly Cloudy
April 1916°F-9°C37°F3°C6 mph9 km/h from NPartly CloudyMostly Clear
April 2016°F-9°C47°F8°C3 mph5 km/h from NWMostly ClearMostly Clear
April 2129°F-2°C53°F12°C10 mph16 km/h from SWMostly CloudyPartly Cloudy
April 2226°F-3°C48°F9°C7 mph11 km/h from WMostly ClearMostly Clear
April 2326°F-3°C52°F11°C3 mph5 km/h from SPartly CloudyMostly Cloudy
April 2431°F-1°C55°F13°C5 mph9 km/h from SWMostly CloudyMostly Cloudy

Yes

Low of 16°F-9°C, High of 37°F3°C
Wind: 6 mph9 km/h
Precipitation: None

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