National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Bay City, Bay City Municipal Airport (KBYY)

Lat: 28.97°NLon: 95.86°WElev: 46ft.

Mostly Cloudy

82°F

28°C

Humidity 100%
Wind Speed S 15 mph
Barometer 29.57 in
Dewpoint 82°F (28°C)
Visibility 9.00 mi
Heat Index95°F (35°C)
Last update 17 Jun 1:55 pm CDT
Extended Forecast for

Markham TX

Heat Advisory June 18, 11:00am until June 19, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 88. Heat index values as high as 106. West wind around 10 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 80. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 80 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 91. Heat index values as high as 112. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 82. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 82 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 81.

    Low: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 80.

    Low: 80 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90. Breezy.

    High: 90 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. Heat index values as high as 106. West wind around 10 mph.
Tonight
Increasing clouds, with a low around 80. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 91. Heat index values as high as 112. South wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 82. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Juneteenth
Partly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 81.
Saturday
Partly sunny, with a high near 90.
Saturday Night
Partly cloudy, with a low around 80.
Sunday
Mostly sunny, with a high near 90. Breezy.
Sunday Night
Mostly clear, with a low around 81.
Monday
Mostly sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 80.
Tuesday
Mostly sunny, with a high near 92.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Markham TX
 28.97°N 96.07°W (Elev. 52 ft)
Last Update:
1:21 pm CDT Jun 17, 2026
Forecast Valid:
2pm CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation