Johnston Lake Weather Forecast

    • 57
    • 66

    Rain Showers Likely

    • 59
    • 79

    Partly Sunny

    • 70
    • 89

    Sunny

    • 71
    • 94

    Partly Sunny

    • 72
    • 93

    Mostly Cloudy

    • 71
    • 91

    Chance Thunderstorms

Today 11 May Gregg

Cloudy. Showers likely Early, then a chance of Showers. Cooler with Highs in the mid 60s. North Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 11 May Gregg

Mostly cloudy. A slight chance of Showers in the evening. Patchy fog after midnight. Lows in the upper 50s. North Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnston Lake Temperature Statistics

May Temperature

Longview - East Texas Regional Airport (9.3 miles)

  • Lowest 4 May, 2025

    50.6 °F

  • Average May

    67.8 °F

  • Highest 1 May, 2025

    85.6 °F

Climate (2020–Present)

Longview - East Texas Regional Airport (9.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    67 °F

  • Average High 2020–2025

    78.2 °F
Get WillyWeather+ to remove ads