Yes
you do need a jacket based on the weather in Boulder, CO, USA 1 second ago
Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer!
45°F7°C & Clear
Wind is 6 mph10 km/h from the West, gusting to 9 mph14 km/h
| October 17 | ||||
| 3pm | 50°F10°C | 3 mph5 km/h Southwest | Clear | |
| 4pm | 54°F12°C | 4 mph7 km/h North | Clear | |
| 5pm | 58°F14°C | 4 mph7 km/h Northeast | Clear | |
| 6pm | 61°F16°C | 5 mph7 km/h Southeast | Clear | |
| 7pm | 63°F17°C | 6 mph10 km/h Southwest | Clear | |
| 8pm | 64°F18°C | 7 mph11 km/h Southwest | Clear | |
| 9pm | 65°F18°C | 8 mph13 km/h West | Clear | |
| 10pm | 64°F18°C | 7 mph12 km/h West | Clear | |
| 11pm | 63°F17°C | 7 mph11 km/h West | Clear | |
| October 18 | ||||
| 12am | 59°F15°C | 6 mph9 km/h West | Mostly Clear | |
| 1am | 55°F13°C | 6 mph9 km/h West | Mostly Clear | |
| 2am | 53°F12°C | 7 mph12 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 17 | 41°F5°C | 65°F18°C | 6 mph9 km/h from West | Clear | Mostly Clear |
| October 18 | 40°F5°C | 62°F16°C | 11 mph17 km/h from Northwest | Clear | Clear |
| October 19 | 40°F5°C | 73°F23°C | 8 mph13 km/h from Southwest | Mostly Clear | Mostly Clear |
| October 20 | 44°F7°C | 65°F18°C | 10 mph16 km/h from West | Mostly Clear | Clear |
| October 21 | 38°F3°C | 64°F18°C | 3 mph5 km/h from East | Mostly Clear | Mostly Clear |
| October 22 | 47°F8°C | 67°F19°C | 5 mph8 km/h from East | Partly Cloudy | Partly Cloudy |
| October 23 | 45°F7°C | 62°F17°C | 4 mph7 km/h from Northwest | Mostly Cloudy | Mostly Clear |
Yes
Low of 40°F5°C, High of 62°F17°CWind: 11 mph17 km/h
Precipitation: None