South Texas Weather Forecast
Weather forecast for July 20, 2016
July 20 – 22, 2017
Daily Weather Forecast
South Texas Weather Modification Association

Weather Discussion:
Mostly clear across south Texas this morning with temperatures ranging from the lower 70’s to
lower 80’s.  A few spots of patchy fog are present across the region, and look to last through the
early morning hours.  Strong high pressure is again centered over the central Gulf, with
southeasterly winds moving through south TX.  Partly cloudy this afternoon with isolated
showers and thunderstorms across the coast and coastal plains.  High temperatures in the
upper 90’s, lower 100’s with slightly cooler temps over hill country.  High Heat Index values are
possible this afternoon and early evening.  Partly cloudy this evening then mostly clear
overnight.  Low temps in the mid to upper 70’s.  


Similar conditions continue Friday and through the weekend, with partly cloudy skies and
isolated afternoon showers and storms along the coast and coastal plains Friday.  Friday high
temps in the upper 90’s, lower 100’s.  Partly cloudy then mostly clear overnight Friday, with low
temps in the upper 70’s, lower 80’s.  Saturday also looks to be partly cloudy with isolated
afternoon showers and storms along the coast and coastal plains.  Saturday highs in the upper
90’s, lower 100’s.  Moisture looks to increase slightly on Sunday with isolated to scattered
showers and storms, then partly cloudy on Monday.

Daily normal (F): high 95, low 75

Pilots (STWMA): small chance of cloud seeding today.

Today: Partly cloudy with isolated afternoon showers and thunderstorms across the coast and
coastal plains.  Patchy fog possible in the early morning hours.  High Heat Index values are
possible this afternoon and early evening.  High temperatures in the upper 90’s, lower 100’s with
slightly cooler temps over hill country.  Southeasterly winds 0 – 10 mph then 5 – 15 mph with
stronger gusts in the evening.  

Tonight: Partly cloudy this evening then mostly clear.  Overnight low temps in the mid to upper
70’s.  Southeasterly winds 5 – 15 mph in the evening then decreasing overnight.

Friday: Partly cloudy with isolated afternoon showers and storms along the coast and coastal
plains.  Highs in the upper 90’s, lower 100’s.  Partly cloudy then mostly clear overnight.  
Overnight lows in the upper 70’s, lower 80’s.  Southeasterly winds 5 – 15 mph with stronger
gusts possible in the evening.

Saturday: Partly cloudy with isolated afternoon showers and thunderstorms along the coast and
coastal plains.  Highs in the upper 90’s, lower 100’s.  Mostly clear overnight.  Overnight lows in
the mid to upper 70’s.  Southeasterly winds 5 – 15 mph.

Extended: Afternoon rain possible on Sunday, then Monday looks to be mostly sunny (July 24).  


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