Fontana Weather Forecast

    • 39
    • 48

    Rain

    • 40
    • 46

    Cloudy

    • 53
    • 61

    Rain Showers Likely

    • 44
    • 63

    Partly Sunny

    • 50
    • 69

    Mostly Sunny

    • 55
    • 73

    Slight Chance Rain Showers

    • 45
    • 75

    Rain Showers Likely

Today 5 Mar Lebanon

Cloudy with a 50 percent chance of Showers. Near steady temperature in the mid 40s. East Winds 5 to 10 Mph.

Tonight 5 Mar Lebanon

Showers, mainly this evening. Areas of dense fog. Visibility one quarter mile or less at Times. Lows in the upper 30s. East Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Temperature Statistics

March Temperature

Muir Army Air Field / Indiantown (11.2 miles)

  • Lowest 2 March, 2026

    20.7 °F

  • Average March

    32.5 °F

  • Highest 1 March, 2026

    43.5 °F

Climate (2021–Present)

Muir Army Air Field / Indiantown (11.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.9 °F
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