Sun Valley Weather Forecast

    • 65
    • 76

    Rain Showers Likely

    • 56
    • 78

    Rain Showers

    • 54
    • 69

    Rain Showers Likely

    • 52
    • 64

    Rain Showers Likely

    • 51
    • 64

    Rain Showers Likely

    • 50
    • 66

    Slight Chance Rain Showers

Today 19 Sep Hancock

Partly sunny. Highs in the upper 70s. Southeast Winds around 5 Mph.

Tonight 19 Sep Hancock

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers in the Evening, then Showers after midnight. Warm with Lows in the mid 60s. Southeast Winds around 5 Mph, becoming south around 5 Mph after midnight. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sun Valley Temperature Statistics

September Temperature

Pittsburgh, Pittsburgh International Airport (16.2 miles)

  • Lowest 15 September, 2026

    52.6 °F

  • Average September

    74 °F

  • Highest 2 September, 2026

    92.6 °F

Climate (2021–2026)

Pittsburgh, Pittsburgh International Airport (16.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    63.5 °F
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