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Austin County, TX Weather Forecast | 5 Day

Updated: Tue Sep 15th 2026 7:30 PM CDT

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Austin County, TX Weather Forecast - 9-15-26 - Sunny

Sunny

Tue 9-15-26

Sunny with a high of 99°F and a low of 78°F. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 17mph on average and gusts of 24.6mph at 8 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 75% at 11 PM and 63% being its lowest at 8 PM. Barometric pressure is its highest of 30.05inHg at 10 PM, a lowest point of 30inHg at 8 PM with an avg 30.03inHg.

    • HI: 99°F
    • LO: 78°F
    • Rainfall: 5%
    • Snowfall: 0%
    • Wind
      16.3 mph
    • Humidity
      65% avg.
    • UV Index
      8.9
    • Air Quality
      Good
    • Sunrise
      07:10 AM
    • Sunset
      07:31 PM
    • Moonrise
      11:50 AM
    • Moonset
      10:14 PM
    • Moon Phase
      Waxing Crescent
Austin County, TX Weather Forecast - 9-16-26 - Overcast

Overcast

Weather Tomorrow, Wed 9-16-26

Overcast with a high of 97°F and a low of 78°F. There's a very small chance of rainfall, only about 10%. Wind will be moderate, blowing around 14mph on average and gusts of 25.1mph at 3 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 89% at 7 AM and 36% being its lowest at 2 PM. Barometric pressure is its highest of 30.16inHg at 10 AM, a lowest point of 30.05inHg at 12 AM with an avg 30.1inHg.

    • HI: 97°F
    • LO: 78°F
    • Rainfall: 10%
    • Snowfall: 0%
    • Wind
      13.9 mph
    • Humidity
      63% avg.
    • UV Index
      8.6
    • Air Quality
      Good
    • Sunrise
      07:10 AM
    • Sunset
      07:29 PM
    • Moonrise
      12:53 PM
    • Moonset
      11:00 PM
    • Moon Phase
      First Quarter
Austin County, TX Weather Forecast - 9-17-26 - Overcast

Overcast

Thu 9-17-26

Overcast with a high of 92°F and a low of 78°F. Rainfall expected to have a 54% chance with an estimated 0.04in. Wind will be moderate, blowing around 13mph on average and gusts of 19.1mph at 12 AM. The humidity will be on the higher side, averaging about 69%, the maximum being 86% at 7 AM and 49% being its lowest at 1 PM. Barometric pressure is its highest of 30.17inHg at 9 AM, a lowest point of 30.07inHg at 5 PM with an avg 30.12inHg.

    • HI: 92°F
    • LO: 78°F
    • Rainfall: 54% | est. 0.04in
    • Snowfall: 0%
    • Wind
      13 mph
    • Humidity
      69% avg.
    • UV Index
      6.7
    • Air Quality
      Good
    • Sunrise
      07:11 AM
    • Sunset
      07:28 PM
    • Moonrise
      01:52 PM
    • Moonset
      11:50 PM
    • Moon Phase
      First Quarter
Austin County, TX Weather Forecast - 9-18-26 - Sunny

Sunny

Fri 9-18-26

Sunny with a high of 96°F and a low of 76°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 14mph on average and gusts of 25.1mph at 6 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 89% at 7 AM and 27% being its lowest at 5 PM. Barometric pressure is its highest of 30.13inHg at 12 AM, a lowest point of 29.99inHg at 5 PM with an avg 30.07inHg.

    • HI: 96°F
    • LO: 76°F
    • Rainfall: 3%
    • Snowfall: 0%
    • Wind
      13.9 mph
    • Humidity
      60% avg.
    • UV Index
      8.9
    • Air Quality
      Good
    • Sunrise
      07:11 AM
    • Sunset
      07:27 PM
    • Moonrise
      02:46 PM
    • Moonset
      Does not set today
    • Moon Phase
      First Quarter
Austin County, TX Weather Forecast - 9-19-26 - Sunny

Sunny

Sat 9-19-26

Sunny with a high of 97°F and a low of 73°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 16mph on average and gusts of 25.1mph at 9 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 87% at 7 AM and 29% being its lowest at 3 PM. Barometric pressure is its highest of 30.02inHg at 12 AM, a lowest point of 29.85inHg at 5 PM with an avg 29.95inHg.

    • HI: 97°F
    • LO: 73°F
    • Rainfall: 3%
    • Snowfall: 0%
    • Wind
      15.2 mph
    • Humidity
      60% avg.
    • UV Index
      9.5
    • Air Quality
      Good
    • Sunrise
      07:12 AM
    • Sunset
      07:26 PM
    • Moonrise
      03:33 PM
    • Moonset
      12:45 AM
    • Moon Phase
      First Quarter
Austin County, TX Weather Forecast - 9-20-26 - Sunny

Sunny

Sun 9-20-26

Sunny with a high of 98°F and a low of 74°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 14mph on average and gusts of 23.5mph at 10 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 88% at 7 AM and 27% being its lowest at 4 PM. Barometric pressure is its highest of 29.93inHg at 7 AM, a lowest point of 29.8inHg at 5 PM with an avg 29.88inHg.

    • HI: 98°F
    • LO: 74°F
    • Rainfall: 3%
    • Snowfall: 0%
    • Wind
      13.4 mph
    • Humidity
      60% avg.
    • UV Index
      9
    • Air Quality
      TBA
    • Sunrise
      07:12 AM
    • Sunset
      07:24 PM
    • Moonrise
      04:15 PM
    • Moonset
      01:41 AM
    • Moon Phase
      Waxing Gibbous

Currently

Overcast 90°F
29.97 inHg.
Barometer
53%
Humidity
SE 26.3 mph
Wind
Overcast

National Outlook

Storms and Heat Hit Central U.S. 09-15 to 09-17

Tue Sep 15th 2026, 8:34am PDT
Read

Rain and Thunderstorms Shake Up the Plains 09-18 to 09-22

Extended Forecast
Tue Sep 15th 2026, 8:35am PDT
Read

5 Day Forecast Nearby

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