Johnstown Weather Forecast

    • 48
    • 81

    Sunny

    • 52
    • 80

    Sunny

    • 46
    • 81

    Chance Rain Showers

    • 39
    • 67

    Partly Sunny

    • 45
    • 68

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

Today 3 May Grand Forks

Sunny. Highs 75 to 80. Southwest Winds 5 to 15 Mph.

Tonight 3 May Grand Forks

Clear. Lows in the mid 40s. Southwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnstown Temperature Statistics

May Temperature

Grand Forks Air Force Base (12.4 miles)

  • Lowest 1 May, 2025

    43.3 °F

  • Average May

    49.4 °F

  • Highest 1 May, 2025

    61.5 °F

Climate (2020–Present)

Grand Forks Air Force Base (12.4 miles)

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  • Average Low 2020–2025

    31.5 °F

  • Average 2020–2025

    42.3 °F

  • Average High 2020–2025

    52.4 °F
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