South Texas Weather Forecast
Weather forecast for June 21, 2016
June 21 – 23, 2017
Daily Weather Forecast
South Texas Weather Modification Association

Weather Discussion
Mostly clear across south Texas this morning, with temperatures ranging from the lower to upper
70’s.  A tropical storm is moving through eastern TX, however it will not affect the south TX
region other than some breezy conditions.  A strong ridge of high pressure will persist for yet
another day across the region, with partly cloudy skies.  High temperatures in the upper 90’s,
lower 100’s.  Mostly clear overnight with low temps in the mid to upper 70’s and cooler temps
over hill country.

Partly cloudy skies continue on Thursday, however increased moisture could make for isolated
afternoon showers and thunderstorms along the coast and coastal plains.  Thursday high temps
in the upper 90’s, lower 100’s.  Mostly clear overnight Thursday, with low temps in the mid to
upper 70’s.  As moisture from the Gulf continues to slowly increase across the region, isolated
showers and thunderstorms are possible again Friday afternoon, especially east of San
Antonio.  Friday highs in the upper 90’s, lower 100’s.  A cold front looks to stall across central
TX over the weekend, with isolated to scattered rain across the region both Saturday and
Sunday.

Daily normal (F): high 93, low 73

Pilots (STWMA): no cloud seeding today.

Today: Partly cloudy.  High temperatures in the upper 90’s, lower 100’s.  Northerly winds 5 – 15
mph with stronger gusts possible.  

Tonight: Mostly clear.  Low temps in the mid to upper 70’s with cooler temps over hill country.  
Northerly winds 0 – 10 mph.

Thursday: Partly cloudy with isolated showers and thunderstorms along the coast and coastal
plains in the afternoon.  High temps in the upper 90’s, lower 100’s.  Mostly clear overnight.  Low
temps in the mid to upper 70’s.  Northwesterly winds 0 – 10 mph.

Friday: Partly cloudy with isolated showers and thunderstorms east of San Antonio.  Highs in the
upper 90’s, lower 100’s.  Partly to mostly cloudy overnight.  Lows in the upper 70’s, lower 80’s.  
Southerly winds 0 – 10 mph.

Extended: Rain possible both Saturday and Sunday (June 2
5).  


Forecast Notes:
Temperatures are in Fahrenheit (F)
Wind speeds are in miles per hour (mph)
Rainfall amounts in inches (in.)
Visibility in miles

Rain chance terminology from lowest to highest chance: isolated, scattered, widespread.
South Texas Weather Modification Association