Boise Weather Forecast

    • 63
    • 75

    Rain Showers

    • 55
    • 79

    Chance Rain Showers

    • 51
    • 73

    Breezy

    • 48
    • 67

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 29 Sep Oldham

Showers and a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs in the upper 70s. Temperature falling into the lower 70s late. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

Tonight 29 Sep Oldham

Showers and a chance of Thunderstorms in the Evening, then Showers and a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible in the evening. Lows in the lower 60s. Southeast Winds 5 to 10 Mph, becoming 15 to 20 Mph with Gusts up to 30 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boise Temperature Statistics

September Temperature

Hereford Municipal Airport (38.5 miles)

  • Lowest 22 September, 2026

    58.8 °F

  • Average September

    79.1 °F

  • Highest 12 September, 2026

    102.2 °F

Climate (2021–2026)

Hereford Municipal Airport (38.5 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    61.2 °F

  • Average High 2021–2026

    76.8 °F
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