Johnston Lake Weather Forecast

    • 32
    • 59

    Sunny

    • 42
    • 62

    Sunny

    • 45
    • 75

    Sunny

    • 47
    • 71

    Mostly Sunny

    • 52
    • 76

    Mostly Cloudy

    • 55
    • 76

    Mostly Cloudy

Today 4 Feb Gregg

Mostly sunny. Highs in the upper 50s. North Winds 5 to 10 Mph.

Tonight 4 Feb Gregg

Clear, cold with Lows in the lower 30s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnston Lake Temperature Statistics

February Temperature

Longview - East Texas Regional Airport (9.3 miles)

  • Lowest 1 February, 2026

    24.1 °F

  • Average February

    43.1 °F

  • Highest 2 February, 2026

    68 °F

Climate (2021–Present)

Longview - East Texas Regional Airport (9.3 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    67.3 °F

  • Average High 2021–2026

    78.7 °F
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