37ºF

Series of fronts to send temperatures on roller-coaster ride

Front arrives Tuesday night followed by stronger push of cold air Friday


SAN ANTONIO – Temperatures on Tuesday afternoon have been 15-20 degrees above the seasonal average for much of South-Central Texas, with highs in the upper 70s to lower 80s. The weather has certainly cooperated for outdoor activities with plentiful sunshine, minus the very high counts of the cedar pollen.

A taste of the season will arrive late Tuesday night, a few hours before midnight, in the form of a cold front that will send temperatures tumbling into the lower 40s. The front does not have much moisture to work with and no rainfall is anticipated with its arrival. Winds will gradually shift more north-northeasterly and average about 5-15 mph. The front will not have the strong gusty winds that came with previous cold fronts.

Wednesday will be noticeably cooler with afternoon highs in the mid-50s under partly cloudy skies. A sweater or light jacket will be needed.

On Thursday, the cold front boundary will move back north into our area as a warm front and increase temperatures from the 50s into the upper 60s on Thursday with mainly clear skies.

Just when it seems as if a good push of cold air will not stick around, another cold front will surge into San Antonio on early Friday morning. Though it will arrive in the early-morning hours when most people are sleeping, it will be noticeable as winds will increase out of the north about 15-25 mph and temperatures will drop into the 30s for the Friday morning commute. 

Friday afternoon will feature overcast skies and even some light drizzle or sprinkles as highs struggle to reach the lower 40s. Wind chill readings will only get to the lower 30s. A hefty jacket and perhaps an umbrella will be needed if you plan to be out.

Saturday and Sunday mornings will drop into the upper 20s, so a hard freeze will occur. Take precautions to protect outdoor pets and sensitive vegetation.  Otherwise, the afternoon will be mostly sunny with highs in the 40s and 50s.

Temperatures will again moderate back to near seasonal average by early next week, with highs back near 70.