Johnson Lake Weather Forecast

    • 61
    • 74

    Chance Thunderstorms

    • 59
    • 76

    Rain Showers Likely

    • 56
    • 75

    Chance Thunderstorms

    • 54
    • 77

    Chance Rain Showers

    • 49
    • 71

    Chance Rain Showers

    • 48
    • 66

    Chance Rain Showers

Today 13 Sep Sheridan

Showers likely. A slight chance of Thunderstorms late in the Morning, then a chance of Thunderstorms in the afternoon. Highs in the lower 70s. East Winds 10 to 15 Mph. Chance of rain 60 percent.

Tonight 13 Sep Sheridan

Mostly cloudy with a chance of Showers. A chance of Thunderstorms in the Evening, then a slight chance of Thunderstorms after midnight. Patchy fog. Lows in the lower 60s. East Winds around 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

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Johnson Lake Temperature Statistics

September Temperature

Harvey Municipal Airport (8.1 miles)

  • Lowest 7 September, 2025

    33.8 °F

  • Average September

    57.1 °F

  • Highest 1 September, 2025

    80.6 °F

Climate (2020–Present)

Harvey Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    30.1 °F

  • Average 2020–2025

    41.1 °F

  • Average High 2020–2025

    51.8 °F
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