Grantville State Forest Weather Forecast

    • 54
    • 74

    Slight Chance Rain Showers

    • 58
    • 81

    Mostly Sunny

    • 50
    • 75

    Partly Sunny

    • 48
    • 68

    Partly Sunny

    • 47
    • 66

    Chance Rain Showers

    • 47
    • 65

    Slight Chance Rain Showers

Today 25 May Northern St. Lawrence

Patchy fog in the morning. Cloudy with rain in the Morning, then partly sunny in the afternoon. Much warmer with Highs in the lower 70s. Light and variable Winds, becoming west around 10 Mph in the afternoon. Chance of rain 90 percent.

Tonight 25 May Northern St. Lawrence

Mostly clear until Midnight, then becoming partly cloudy. Lows in the mid 50s. Southwest Winds around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantville State Forest Temperature Statistics

May Temperature

Massena, Massena International-Richards Field (6.8 miles)

  • Lowest 9 May, 2026

    30.7 °F

  • Average May

    53.2 °F

  • Highest 18 May, 2026

    86.6 °F

Climate (2021–Present)

Massena, Massena International-Richards Field (6.8 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.8 °F
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