No
you don't need a jacket based on the weather in Lewistown Municipal Airport, 1601 D St, Lewistown, MT 59457, USA 1 second ago
75°F24°C & Clear
Wind is 5 mph8 km/h from the West, gusting to 13 mph21 km/h
| September 14 | ||||
| 4pm | 76°F25°C | 6 mph9 km/h Northwest | Mostly Clear | |
| 5pm | 77°F25°C | 6 mph9 km/h Northwest | Mostly Clear | |
| 6pm | 77°F25°C | 6 mph9 km/h Northwest | Partly Cloudy | |
| 7pm | 76°F24°C | 6 mph10 km/h Northwest | Partly Cloudy | |
| 8pm | 76°F24°C | 4 mph7 km/h Northwest | Clear | |
| 9pm | 72°F22°C | 3 mph6 km/h Northeast | Clear | |
| 10pm | 67°F19°C | 5 mph7 km/h Southeast | Clear | |
| 11pm | 64°F18°C | 6 mph9 km/h Southeast | Mostly Clear | |
| September 15 | ||||
| 12am | 62°F16°C | 6 mph10 km/h Southeast | Partly Cloudy | |
| 1am | 61°F16°C | 6 mph9 km/h Southeast | Mostly Cloudy | |
| 2am | 60°F16°C | 7 mph11 km/h West | Mostly Cloudy | |
| 3am | 58°F15°C | 4 mph6 km/h South | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 14 | 49°F10°C | 77°F25°C | 4 mph7 km/h from Northwest | Mostly Clear | Partly Cloudy |
| September 15 | 53°F12°C | 69°F20°C | 7 mph11 km/h from Northwest | Mostly Cloudy | Drizzle |
| September 16 | 52°F11°C | 67°F19°C | 5 mph8 km/h from Northwest | Mostly Cloudy | Mostly Clear |
| September 17 | 49°F9°C | 72°F22°C | 2 mph4 km/h from East | Mostly Clear | Mostly Clear |
| September 18 | 49°F10°C | 73°F23°C | 4 mph6 km/h from Northeast | Clear | Mostly Clear |
| September 19 | 48°F9°C | 73°F23°C | 3 mph6 km/h from Northeast | Partly Cloudy | Mostly Cloudy |
| September 20 | 52°F11°C | 73°F23°C | 3 mph5 km/h from Northwest | Mostly Cloudy | Partly Cloudy |
Yes
Low of 53°F12°C, High of 69°F21°CWind: 7 mph11 km/h
Precipitation: 16% rain