SAN ANTONIO — Keep that jacket handy! A cold front keeping temperatures in the 40s will be sticking around overnight into Tuesday.

Expect rain by Tuesday morning. Increasing clouds overnight will give way to scattered showers by 6 or 7 a.m. We're not expecting much rainfall Tuesday, but chances are pretty good we will have periods of light rain, isolated downpours, totaling up half an inch at most. Thunderstorms are not in the forecast.

Temperatures are the other big story. We will see highs in the upper 40s to near 50 at best, which is 15 to 20 degrees below the seasonal average.

Temperatures will range from 40s to 60s through Friday before a warmer weekend.