Yes

you do need a jacket based on the weather in San Antonio (North Central), Texas, United States 1 second ago

Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer!
48°F9°C & Partly Cloudy

Wind is 8 mph13 km/h from the Northeast, gusting to 16 mph25 km/h
January 7
7pm46°F8°C7 mph12 km/h NortheastClear
8pm43°F6°C8 mph12 km/h NortheastClear
9pm41°F5°C8 mph14 km/h NortheastClear
10pm38°F4°C9 mph14 km/h NortheastClear
11pm37°F3°C10 mph16 km/h NortheastClear
January 8
12am35°F2°C10 mph16 km/h NortheastClear
1am34°F1°C10 mph15 km/h NortheastClear
2am33°F1°C10 mph16 km/h NortheastMostly Clear
3am32°F-0°C10 mph16 km/h NortheastPartly Cloudy
4am31°F-0°C11 mph17 km/h NortheastMostly Cloudy
5am31°F-1°C11 mph18 km/h NortheastMostly Cloudy
6am31°F-1°C11 mph18 km/h NortheastMostly Cloudy
DateLowHighWindDayNight
January 730°F-1°C50°F10°C6 mph10 km/h from NortheastClearMostly Clear
January 830°F-1°C43°F6°C8 mph12 km/h from NortheastCloudyCloudy
January 937°F3°C42°F6°C7 mph12 km/h from NortheastRainRain
January 1036°F2°C47°F8°C13 mph20 km/h from NorthDrizzleClear
January 1133°F0°C57°F14°C6 mph10 km/h from SouthwestClearClear
January 1237°F3°C62°F17°C5 mph9 km/h from NorthClearPartly Cloudy
January 1339°F4°C56°F13°C8 mph13 km/h from NortheastMostly CloudyCloudy

Yes

Low of 30°F-1°C, High of 44°F7°C
Wind: 8 mph12 km/h
Precipitation: None

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