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—-
AUSTIN / IH35 CORRIDOR
7-DAY FORECAST WEATHER HAZARDS…
Mo/20Jul..
Elevated Afternoon/Evening Heat Stress
Tu/21Jul..
Elevated Afternoon/Evening Heat Stress
We/22Jul..
Dangerous Afternoon/Evening Heat Stress
Th/23Jul..
Dangerous Afternoon/Evening Heat Stress
Fr/24Jul..
Dangerous Afternoon/Evening Heat Stress
Sa/25Jul..
Elevated Afternoon/Evening Heat Stress
Su/26Jul..
Elevated Afternoon/Evening Heat Stress
—
7-DAY RAINFALL FOR THE IH-35 CORRIDOR…
Based on NWS/Weather Prediction Center guidance and model forecasts,
little if any rainfall is currently forecast for our IH35 corridor counties
over the 7 day forecast period ending on Sunday.
—
AUSTIN / IH35 CORRIDOR
MY SEVEN DAY WEATHER THOUGHTS
AND MY 7 DAY FORECAST CONFIDENCE …
After the heavier rains last week, our more stable summer atmosphere remains in
place as we start the new week. With the sunshine returning and the soil moisture
drying out a bit, we’ve seen afternoon high temperatures back to seasonal averages.
As upper level high pressure, acting like a “lid” on the atmosphere, continues to
build over the area, I expect the dry weather pattern to continue for most areas into
mid week.
For Wednesday through Friday, afternoon into evening temperatures combined with
atmospheric moisture will result with dangerous heat index and wet bulb globe
temperature values.
By late Wednesday and Thursday, we need to monitor the projected path of the
tropical cyclone – currently a tropical depression – over the northeastern Gulf. Given
that the upper level high pressure will continue to hold forth over north Texas and
another one will build westward over the southeastern states, the forecast track of
the tropical system as well as its forecast strength, is still quite uncertain with
NWS/National Hurricane Center meteorologists saying it will move westward along
the Gulf coast with the system possibly affecting the Texas coast by late week as
a tropical storm.
At this point, in a low confidence forecast, I expect rainfall to be limited locally with
little or no precipitation expected on the IH35 corridor and in areas to the north,
northwest and west. In the coastal plains between here and the coast, forecast
rainfall amounts of 1 to 2 inches are possible along with the potential for gusty
winds as well especially in the coastal counties.
Once the system passes to the southwest, the upper level high pressure area will
once again build overhead with a dry summer weather pattern by the weekend.
LOCAL FORECAST CONFIDENCE FOR THIS SEVEN DAY FORECAST PERIOD …
– A high to very high forecast confidence through Wednesday.
– A low to medium forecast confidence for Wednesday night into early Friday.
– A high forecast confidence for Friday afternoon through the weekend.
—
Troy’s Weather Forecast for Austin, South Central Texas and the IH35 Corridor
MONDAY (20Jul)….
Brief morning low clouds then mostly sunny.
Afternoon high in the mid to upper 90s.
Maximum afternoon maximum heat stress (HI) index 102 F.
Maximum afternoon wet bulb globe temperature (WBGT) 86 F.
South southwesterly wind 4 to 8 mph.
MONDAY NIGHT….
Mostly clear.
Overnight low in the mid 70s.
Southerly wind 4 to 8 mph becoming calm late.
TUESDAY (21Jul)….
Brief morning low clouds then mostly sunny.
Afternoon high in the upper 90s.
Maximum afternoon maximum heat stress (HI) index 103 F.
Maximum afternoon wet bulb globe temperature (WBGT) 88 F.
Southerly wind 4 to 8 mph.
TUESDAY NIGHT….
Mostly clear.
Overnight low in the mid 70s.
Southerly wind 4 to 8 mph becoming calm.
WEDNESDAY (22Jul)….
Mostly sunny.
Afternoon high around 101.
Maximum afternoon maximum heat stress (HI) index 107 F.
Maximum afternoon wet bulb globe temperature (WBGT) 88 F.
East southeasterly wind 4 to 8 mph.
WEDNESDAY NIGHT….
Mostly clear.
Overnight low in the upper 70s.
Southeasterly wind 4 to 8 mph becoming late.
THURSDAY (23Jul)….
Mostly sunny.
Afternoon high around 100.
Maximum afternoon maximum heat stress (HI) index 106 F.
Maximum afternoon wet bulb globe temperature (WBGT) 88 F.
Southeasterly wind 4 to 8 mph.
THURSDAY NIGHT….
Mostly clear.
Overnight low in the upper 70s.
South southeasterly wind 4 to 8 mph.
FRIDAY (24Jul)….
Mostly sunny.
Afternoon high in the upper 90s.
Maximum afternoon maximum heat stress (HI) index 106 F.
Maximum afternoon wet bulb globe temperature (WBGT) 87 F.
Southeasterly wind 5 to 12 mph.
FRIDAY NIGHT….
Mostly clear.
Overnight low in the upper 70s.
South southeasterly wind 4 to 8 mph.
SATURDAY (25Jul)….
Mostly sunny.
Afternoon high in the upper 90s.
Maximum afternoon maximum heat stress (HI) index 105 F.
Maximum afternoon wet bulb globe temperature (WBGT) 87 F.
South southeasterly wind 5 to 12 mph.
SATURDAY NIGHT….
Mostly clear.
Overnight low in the upper 70s.
Southerly wind 4 to 8 mph.
SUNDAY (26Jul)….
Mostly sunny.
Afternoon high in the mid to upper 90s.
Maximum afternoon maximum heat stress (HI) index 105 F.
Maximum afternoon wet bulb globe temperature (WBGT) 87 F.
Southerly wind 5 to 12 mph.
NATIONAL WEATHER SERVICE / CLIMATE PREDICTION CENTER (CPC)
8 TO 14 DAY OUTLOOK
Valid Monday / 27 July 2026 through Sunday / 02 August 2026
Temperature… Better Chances of Above Normal
Precipitation… Better Chances of Near Normal
NATIONAL WEATHER SERVICE / CLIMATE PREDICTION CENTER (CPC)
3 TO 4 WEEK OUTLOOK (Updated on Friday/17Jul2026)
Valid Saturday / 01 August 2026 through Friday / 14 August 2026
Temperatures… Better Chances of Slightly Above Normal
Precipitation… Better Chances of Below Normal