Round Lake Weather Forecast

    • 47
    • 69

    Slight Chance Rain Showers

    • 47
    • 68

    Mostly Sunny

    • 50
    • 71

    Partly Sunny

    • 52
    • 69

    Mostly Cloudy

    • 57
    • 73

    Rain Showers

    • 45
    • 68

    Rain Showers Likely

Today 5 Sep Southeastern St. Lawrence

Mostly cloudy this Morning, then partly sunny with a slight chance of Showers this afternoon. Highs in the upper 60s. Light and variable Winds, becoming north around 10 Mph this afternoon. Chance of rain 20 percent.

Tonight 5 Sep Southeastern St. Lawrence

Partly cloudy until Midnight, then clearing. Lows in the upper 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Round Lake Temperature Statistics

September Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (28 miles)

  • Lowest 1 September, 2026

    64.6 °F

  • Average September

    71.4 °F

  • Highest 2 September, 2026

    82.2 °F

Climate (2021–2026)

Fort Drum / Wheeler-Sack U. S. Army Airfield (28 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    55.9 °F
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