Siphon Lakes Weather Forecast

    • 30
    • 46

    Slight Chance Rain Showers

    • 33
    • 46

    Increasing Clouds

    • 35
    • 51

    Partly Sunny

    • 39
    • 50

    Chance Rain

    • 37
    • 51

    Chance Rain

    • 34
    • 53

    Mostly Sunny

    • 37
    • 55

    Partly Sunny

Today 25 Feb Boise Mountains

Areas of fog this morning. Rain and snow Showers this Morning, then partly cloudy with a chance of rain and snow Showers this afternoon. Chance of precipitation 90 percent. New snow accumulation up to 2 Inches. Highs 36 to 49. Breezy.

Tonight 25 Feb Boise Mountains

Decreasing Clouds. Much Colder with Lows 10 to 25.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siphon Lakes Temperature Statistics

February Temperature

Boise Air Terminal (20.5 miles)

  • Lowest 19 February, 2026

    24.7 °F

  • Average February

    42.6 °F

  • Highest 22 February, 2026

    61 °F

Climate (2021–Present)

Boise Air Terminal (20.5 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    66.1 °F
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