In 132 years of weather records, San Antonio has never had a September with no measurable rain. Yet, here we are with a total of 0.00" at the SA Airport so far this month.
Surface high pressure centered over the Gulf of Mexico maintains our low level flow from the southeast, keeping Gulf moisture over the region. Summer-like weather continues through the end of the week with warm morning lows with hot and humid afternoons. Temperatures continue in the middle 90s and middle 70s.
A passing upper-level disturbance will cross the area on Thursday. This feature may enhance showers chances across South Central Texas, but overall the chance of precipitation in still low.
Warm weather expected to last through the weekend , with afternoon showers along and east of I-35. A few showers may produce some lightning and brief downpours, but overall the chance of precipitation is only 20%. Spotty rains linger into the weekend and temperatures are likely to stay hot.
A developing winter storm in the northern Rockies might allow some cool Canadian air to head our way by the middle of next week. The latest forecasts also show a significant rain event along with that front, about a week from now.
More details in the 7 Day Forecast.
In the Atlantic, HURRICANE JOSE is weakening off the East Coast. The center of the storm will miss U.S. landfall. However, tropical storm force winds, high surf and dangerous rip currents are expected in the coastal areas of New England, mainly RI and MA.