No
you don't need a jacket based on the weather in Montana, USA 1 second ago
62°F17°C & Cloudy
Wind is 6 mph9 km/h from the West, gusting to 11 mph17 km/h
| September 15 | ||||
| 5pm | 61°F16°C | 6 mph9 km/h Northwest | Cloudy | |
| 6pm | 61°F16°C | 5 mph9 km/h Northwest | Cloudy | |
| 7pm | 60°F15°C | 3 mph5 km/h Northwest | Drizzle | |
| 8pm | 58°F15°C | 3 mph5 km/h Northwest | Cloudy | |
| 9pm | 58°F14°C | 6 mph9 km/h North | Cloudy | |
| 10pm | 55°F13°C | 6 mph9 km/h Northwest | Drizzle | |
| 11pm | 53°F12°C | 4 mph7 km/h Northwest | Drizzle | |
| September 16 | ||||
| 12am | 52°F11°C | 5 mph8 km/h Northwest | Drizzle | |
| 1am | 51°F10°C | 5 mph9 km/h Northwest | Drizzle | |
| 2am | 49°F10°C | 7 mph10 km/h Northwest | Drizzle | |
| 3am | 49°F9°C | 6 mph9 km/h Northwest | Drizzle | |
| 4am | 49°F9°C | 6 mph10 km/h Northwest | Drizzle | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 49°F10°C | 62°F17°C | 6 mph9 km/h from West | Mostly Cloudy | Drizzle |
| September 16 | 48°F9°C | 60°F16°C | 6 mph9 km/h from North | Mostly Cloudy | Mostly Clear |
| September 17 | 46°F8°C | 67°F19°C | 4 mph6 km/h from East | Clear | Clear |
| September 18 | 48°F9°C | 69°F20°C | 4 mph7 km/h from Northeast | Clear | Clear |
| September 19 | 49°F9°C | 69°F20°C | 3 mph5 km/h from Northeast | Partly Cloudy | Mostly Cloudy |
| September 20 | 52°F11°C | 68°F20°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Clear |
| September 21 | 51°F10°C | 65°F18°C | 13 mph21 km/h from West | Mostly Clear | Mostly Clear |
Yes
Low of 48°F9°C, High of 60°F16°CWind: 6 mph9 km/h
Precipitation: 28% rain