San Mateo Reservoir Weather Forecast

    • 39
    • 63

    Mostly Sunny

    • 37
    • 64

    Becoming Sunny

    • 40
    • 61

    Mostly Sunny

    • 43
    • 68

    Mostly Sunny

    • 41
    • 68

    Partly Sunny

    • 39
    • 66

    Mostly Sunny

    • 40
    • 65

    Mostly Sunny

Today 30 Oct West Central Mountains

Sunny. Highs in the mid 60s.

Tonight 30 Oct West Central Mountains

Mostly clear. Lows in the mid 30s.

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San Mateo Reservoir Temperature Statistics

October Temperature

Grants, Grants-Milan Municipal Airport (18.6 miles)

  • Lowest 19 October, 2025

    29.1 °F

  • Average October

    56.5 °F

  • Highest 3 October, 2025

    81.9 °F

Climate (2020–Present)

Grants, Grants-Milan Municipal Airport (18.6 miles)

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  • Average Low 2020–2025

    34.1 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    67.3 °F
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