Yes

you do need a jacket based on the weather in Bend, OR, USA 1 second ago

Why? Because the cold's there, but it's just a reminder, not an invasion!
39°F4°C & Clear

Wind is 6 mph9 km/h from the Southwest, gusting to 11 mph17 km/h
September 15
10am40°F4°C6 mph9 km/h SouthwestClear
11am44°F7°C6 mph10 km/h SouthClear
12pm50°F10°C5 mph8 km/h SouthClear
1pm56°F13°C4 mph6 km/h SouthClear
2pm60°F16°C3 mph6 km/h SoutheastClear
3pm65°F18°C3 mph5 km/h EastClear
4pm68°F20°C4 mph6 km/h NortheastClear
5pm69°F21°C5 mph9 km/h NortheastClear
6pm71°F22°C6 mph9 km/h NortheastClear
7pm72°F22°C6 mph10 km/h NortheastClear
8pm71°F22°C7 mph11 km/h NortheastClear
9pm69°F21°C7 mph11 km/h NorthClear
DateLowHighWindDayNight
September 1539°F4°C72°F22°C5 mph8 km/h from NortheastClearClear
September 1645°F7°C80°F27°C4 mph7 km/h from EastClearClear
September 1752°F11°C80°F27°C4 mph7 km/h from NorthClearClear
September 1854°F12°C79°F26°C5 mph8 km/h from NorthPartly CloudyMostly Cloudy
September 1957°F14°C79°F26°C3 mph5 km/h from NorthMostly CloudyPartly Cloudy
September 2055°F13°C76°F25°C5 mph9 km/h from WestPartly CloudyPartly Cloudy
September 2150°F10°C73°F23°C4 mph7 km/h from NorthwestMostly ClearMostly Clear

Yes

Low of 46°F8°C, High of 80°F27°C
Wind: 4 mph7 km/h
Precipitation: None

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