Johnson Lake Weather Forecast

    • 45
    • 61

    Rain Showers Likely

    • 46
    • 70

    Partly Sunny

    • 54
    • 81

    Mostly Sunny

    • 59
    • 89

    Mostly Sunny

    • 58
    • 86

    Mostly Sunny

    • 59
    • 85

    Chance Rain Showers

Today 22 May Brookings

Showers with a chance of Thunderstorms. Breezy with Highs around 60. Southeast Winds 20 to 25 Mph with Gusts up to 35 Mph. Chance of rain 90 percent.

Tonight 22 May Brookings

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the evening. Lows in the mid 40s. South Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming southwest around 10 Mph with Gusts up to 20 Mph after midnight. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Lake Temperature Statistics

May Temperature

Brookings, Brookings Municipal Airport (13.7 miles)

  • Lowest 1 May, 2026

    28 °F

  • Average May

    53.8 °F

  • Highest 15 May, 2026

    82 °F

Climate (2021–Present)

Brookings, Brookings Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    55.7 °F
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