Johnson Lake Weather Forecast

    • 74
    • 90

    Chance Thunderstorms

    • 74
    • 89

    Chance Thunderstorms

    • 73
    • 90

    Chance Thunderstorms

    • 75
    • 91

    Slight Chance Thunderstorms

    • 74
    • 93

    Mostly Sunny

    • 74
    • 94

    Mostly Sunny

    • 74
    • 95

    Mostly Sunny

Today 6 Jul Washington

Mostly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. South Winds around 5 Mph. Chance of rain 30 percent.

Tonight 6 Jul Washington

Partly cloudy. Lows in the mid 70s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Lake Temperature Statistics

July Temperature

Brenham, Brenham Municipal Airport (6.2 miles)

  • Lowest 3 July, 2025

    72 °F

  • Average July

    80.2 °F

  • Highest 2 July, 2025

    95.2 °F

Climate (2020–Present)

Brenham, Brenham Municipal Airport (6.2 miles)

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  • Average Low 2020–2025

    60.6 °F

  • Average 2020–2025

    70.3 °F

  • Average High 2020–2025

    81.1 °F
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