Yes
you do need a jacket based on the weather in Boulder, CO, USA 1 second ago
Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
34°F1°C & Clear
Wind is 6 mph10 km/h from the West, gusting to 9 mph15 km/h
| December 24 | ||||
| 8am | 34°F1°C | 7 mph11 km/h West | Clear | |
| 9am | 34°F1°C | 7 mph12 km/h West | Clear | |
| 10am | 35°F2°C | 7 mph11 km/h West | Clear | |
| 11am | 40°F4°C | 5 mph8 km/h West | Clear | |
| 12pm | 44°F7°C | 2 mph4 km/h West | Clear | |
| 1pm | 47°F8°C | 3 mph4 km/h East | Clear | |
| 2pm | 49°F9°C | 4 mph6 km/h East | Clear | |
| 3pm | 50°F10°C | 5 mph7 km/h East | Mostly Clear | |
| 4pm | 49°F10°C | 5 mph8 km/h East | Mostly Clear | |
| 5pm | 48°F9°C | 4 mph7 km/h East | Partly Cloudy | |
| 6pm | 46°F8°C | 3 mph5 km/h East | Partly Cloudy | |
| 7pm | 42°F6°C | 3 mph4 km/h West | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 24 | 32°F-0°C | 50°F10°C | 4 mph7 km/h from Southwest | Mostly Clear | Mostly Cloudy |
| December 25 | 33°F1°C | 47°F8°C | 3 mph5 km/h from Northeast | Mostly Cloudy | Partly Cloudy |
| December 26 | 29°F-2°C | 46°F8°C | 3 mph5 km/h from South | Partly Cloudy | Mostly Cloudy |
| December 27 | 32°F0°C | 45°F7°C | 6 mph10 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| December 28 | 31°F-1°C | 43°F6°C | 8 mph13 km/h from West | Partly Cloudy | Partly Cloudy |
| December 29 | 37°F3°C | 56°F13°C | 7 mph11 km/h from West | Partly Cloudy | Partly Cloudy |
| December 30 | 30°F-1°C | 47°F8°C | 14 mph23 km/h from West | Partly Cloudy | Partly Cloudy |
Yes
Low of 33°F1°C, High of 47°F9°CWind: 3 mph5 km/h
Precipitation: 13% rain