St Johnsburg Weather Forecast

    • 33
    • 53

    Becoming Sunny

    • 46
    • 58

    Rain Showers

    • 44
    • 64

    Rain Showers

    • 44
    • 57

    Mostly Cloudy

    • 49
    • 66

    Slight Chance Rain Showers

    • 50
    • 70

    Chance Rain Showers

Today 11 May Niagara

Mostly cloudy with a chance of Showers Early, then partly sunny from late morning on. Cool with Highs in the lower 50s. Light Winds, becoming northwest around 10 Mph. Chance of rain 30 percent.

Tonight 11 May Niagara

Mainly clear with widespread frost developing overnight. Cold with Lows Ranging from the lower 30s inland to the upper 30s along the lake Ontario shore. Light northwest Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Johnsburg Temperature Statistics

May Temperature

Niagara Falls, Niagara Falls International Airport (2.5 miles)

  • Lowest 2 May, 2026

    30 °F

  • Average May

    48.5 °F

  • Highest 4 May, 2026

    70 °F

Climate (2021–Present)

Niagara Falls, Niagara Falls International Airport (2.5 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    59.8 °F
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