Petersburg Weather Forecast

    • 53
    • 79

    Mostly Sunny

    • 52
    • 76

    Mostly Sunny

    • 59
    • 80

    Mostly Cloudy

    • 60
    • 83

    Chance Rain Showers

    • 55
    • 79

    Breezy

    • 53
    • 76

    Partly Sunny

Today 21 Aug Nelson

Mostly sunny. Highs 80 to 85. Northwest Winds 10 to 20 Mph.

Tonight 21 Aug Nelson

Mostly clear. Patchy fog. Lows in the mid 50s. Northwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Petersburg Temperature Statistics

August Temperature

Grand Forks Air Force Base (28 miles)

  • Lowest 18 August, 2026

    48.9 °F

  • Average August

    68.7 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Grand Forks Air Force Base (28 miles)

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  • Average Low 2021–2026

    31.7 °F

  • Average 2021–2026

    42.2 °F

  • Average High 2021–2026

    52.1 °F
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