Yes
you do need a jacket based on the weather in San Marcos, TX 78666, USA 1 second ago
Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
42°F5°C & Partly Cloudy
Wind is 2 mph4 km/h from the Southeast, gusting to 6 mph9 km/h
| December 22 | ||||
| 5am | 41°F5°C | 2 mph4 km/h Southeast | Clear | |
| 6am | 40°F5°C | 2 mph4 km/h Southeast | Mostly Clear | |
| 7am | 40°F4°C | 2 mph4 km/h Southeast | Mostly Clear | |
| 8am | 40°F5°C | 2 mph4 km/h Southeast | Mostly Clear | |
| 9am | 42°F5°C | 2 mph4 km/h Southeast | Mostly Clear | |
| 10am | 47°F8°C | 4 mph6 km/h Southeast | Partly Cloudy | |
| 11am | 51°F11°C | 6 mph9 km/h Southeast | Partly Cloudy | |
| 12pm | 56°F14°C | 7 mph11 km/h Southeast | Partly Cloudy | |
| 1pm | 61°F16°C | 8 mph13 km/h South | Partly Cloudy | |
| 2pm | 64°F18°C | 10 mph15 km/h South | Partly Cloudy | |
| 3pm | 67°F19°C | 11 mph17 km/h South | Partly Cloudy | |
| 4pm | 68°F20°C | 11 mph17 km/h South | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 22 | 40°F4°C | 68°F20°C | 7 mph12 km/h from South | Partly Cloudy | Mostly Cloudy |
| December 23 | 54°F12°C | 76°F24°C | 10 mph16 km/h from South | Mostly Cloudy | Mostly Cloudy |
| December 24 | 60°F16°C | 76°F25°C | 9 mph14 km/h from South | Mostly Cloudy | Drizzle |
| December 25 | 58°F14°C | 74°F23°C | 7 mph11 km/h from Southeast | Partly Cloudy | Mostly Cloudy |
| December 26 | 56°F13°C | 77°F25°C | 10 mph16 km/h from Southwest | Partly Cloudy | Mostly Clear |
| December 27 | 51°F11°C | 75°F24°C | 5 mph8 km/h from South | Mostly Clear | Mostly Clear |
| December 28 | 53°F12°C | 76°F25°C | 5 mph7 km/h from Southwest | Partly Cloudy | Clear |
Yes
Low of 55°F13°C, High of 75°F24°CWind: 10 mph16 km/h
Precipitation: None