Waltham Weather Forecast

    • 65
    • 78

    Increasing Clouds

    • 72
    • 88

    Gradual Clearing

    • 72
    • 89

    Chance Thunderstorms

    • 68
    • 90

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 67
    • 86

    Slight Chance Thunderstorms

    • 66
    • 86

    Chance Rain Showers

Today 24 Jul Mower

Mostly sunny. Near steady temperature in the mid 70s. South Winds 10 to 15 Mph.

Tonight 24 Jul Mower

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the mid 60s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Waltham Temperature Statistics

July Temperature

Austin Municipal (10.6 miles)

  • Lowest 22 July, 2026

    55.2 °F

  • Average July

    74.3 °F

  • Highest 16 July, 2026

    88.9 °F

Climate (2021–2026)

Austin Municipal (10.6 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57.5 °F
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