Johnson Lake Weather Forecast

    • 56
    • 74

    Chance Thunderstorms

    • 55
    • 71

    Chance Rain Showers

    • 56
    • 76

    Slight Chance Thunderstorms

    • 56
    • 79

    Slight Chance Rain Showers

    • 52
    • 75

    Slight Chance Thunderstorms

    • 52
    • 73

    Mostly Sunny

Today 18 Sep Brookings

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 18 Sep Brookings

Cloudy with a chance of Showers and Thunderstorms. Near steady temperature in the lower 60s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Lake Temperature Statistics

September Temperature

Brookings, Brookings Municipal Airport (13.7 miles)

  • Lowest 7 September, 2025

    36 °F

  • Average September

    58.2 °F

  • Highest 2 September, 2025

    79 °F

Climate (2020–Present)

Brookings, Brookings Municipal Airport (13.7 miles)

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

  • Average Low 2020–2025

    35.1 °F

  • Average 2020–2025

    45.2 °F

  • Average High 2020–2025

    55.4 °F
Get WillyWeather+ to remove ads