Fire Mountain Weather Forecast

    • 48
    • 70

    Partly Cloudy

    • 49
    • 70

    Partly Sunny

    • 50
    • 67

    Mostly Cloudy

    • 50
    • 64

    Patchy Fog

    • 49
    • 64

    Mostly Cloudy

    • 47
    • 67

    Mostly Cloudy

    • 48
    • 71

    Partly Sunny

Today 19 Jan San Diego County Coastal Areas

Mostly sunny. Highs 68 to 72 near the coast to 73 to 76 inland. Light Winds becoming west 10 Mph this afternoon.

Tonight 19 Jan San Diego County Coastal Areas

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Local visibility one quarter mile or less at Times overnight. Lows 47 to 52. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fire Mountain Temperature Statistics

January Temperature

Oceanside, Oceanside Municipal Airport (1.9 miles)

  • Lowest 9 January, 2026

    43 °F

  • Average January

    62 °F

  • Highest 11 January, 2026

    77 °F

Climate (2021–Present)

Oceanside, Oceanside Municipal Airport (1.9 miles)

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  • Average Low 2021–2026

    52.9 °F

  • Average 2021–2026

    62.4 °F

  • Average High 2021–2026

    71.6 °F
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