Yes
you do need a jacket based on the weather in Boulder, CO, USA 1 second ago
Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
49°F10°C & Mostly Clear
Wind is 4 mph7 km/h from the West, gusting to 7 mph11 km/h
| May 10 | ||||
| 9am | 51°F11°C | 4 mph6 km/h West | Clear | |
| 10am | 57°F14°C | 1 mph2 km/h Southwest | Clear | |
| 11am | 61°F16°C | 3 mph5 km/h East | Clear | |
| 12pm | 65°F18°C | 5 mph8 km/h Southeast | Clear | |
| 1pm | 67°F20°C | 6 mph9 km/h East | Clear | |
| 2pm | 70°F21°C | 6 mph10 km/h East | Clear | |
| 3pm | 73°F23°C | 6 mph10 km/h East | Clear | |
| 4pm | 74°F23°C | 7 mph11 km/h East | Clear | |
| 5pm | 75°F24°C | 7 mph12 km/h East | Clear | |
| 6pm | 75°F24°C | 7 mph11 km/h East | Clear | |
| 7pm | 75°F24°C | 6 mph10 km/h East | Clear | |
| 8pm | 74°F23°C | 6 mph10 km/h East | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 10 | 48°F9°C | 75°F24°C | 6 mph9 km/h from East | Clear | Clear |
| May 11 | 53°F12°C | 78°F26°C | 5 mph8 km/h from South | Partly Cloudy | Partly Cloudy |
| May 12 | 57°F14°C | 81°F27°C | 5 mph8 km/h from South | Mostly Clear | Mostly Clear |
| May 13 | 58°F15°C | 81°F27°C | 5 mph9 km/h from Southwest | Partly Cloudy | Clear |
| May 14 | 49°F10°C | 67°F19°C | 10 mph17 km/h from West | Partly Cloudy | Partly Cloudy |
| May 15 | 46°F8°C | 62°F17°C | 10 mph16 km/h from West | Mostly Cloudy | Mostly Cloudy |
| May 16 | 44°F6°C | 64°F18°C | 6 mph9 km/h from Northwest | Mostly Cloudy | Partly Cloudy |
Yes
Low of 54°F12°C, High of 78°F26°CWind: 5 mph8 km/h
Precipitation: None