Mountain Home State Forest Weather Forecast

    • 52
    • 63

    Rain Showers Likely

    • 50
    • 58

    Rain Showers Likely

    • 52
    • 62

    Mostly Sunny

    • 54
    • 65

    Mostly Sunny

    • 57
    • 69

    Partly Sunny

    • 52
    • 67

    Chance Rain Showers

Today 18 Sep South End of the Upper Sierra

Slight chance of Thunderstorms in the morning. Rain Showers likely through the day. Chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the late morning and early afternoon. Some Thunderstorms may produce heavy rainfall late in the afternoon. Near steady temperature in the upper 50s. East Winds up to 10 Mph. Chance of precipitation 70 percent.

Tonight 18 Sep South End of the Upper Sierra

Colder. Mostly cloudy. Rain Showers likely and chance of Thunderstorms in the Evening, then chance of rain Showers and slight chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall. Lows 43 to 57. East Winds up to 10 Mph with Gusts to around 25 Mph. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Home State Forest Temperature Statistics

September Temperature

Porterville, Porterville Municipal Airport (25.5 miles)

  • Lowest 9 September, 2025

    57.9 °F

  • Average September

    77.4 °F

  • Highest 1 September, 2025

    102.9 °F

Climate (2020–Present)

Porterville, Porterville Municipal Airport (25.5 miles)

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  • Average Low 2020–2025

    51.4 °F

  • Average 2020–2025

    64.9 °F

  • Average High 2020–2025

    79.3 °F
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