Waltham Weather Forecast

    • 4
    • 31

    Becoming Sunny

    • 5
    • 15

    Partly Sunny

    • 16
    • 24

    Snow

    • 8
    • 24

    Snow Likely

    • 7
    • 20

    Partly Sunny

    • 6
    • 24

    Mostly Cloudy

Today 23 Jan Southeast Middlesex

Mostly sunny. Cooler with Highs in the lower 30s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 23 Jan Southeast Middlesex

Partly cloudy in the Evening, then clearing. Much Colder with Lows around 4 above. West Winds around 10 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Waltham Temperature Statistics

January Temperature

Laurence G Hanscom Field Airport (6.8 miles)

  • Lowest 5 January, 2026

    10 °F

  • Average January

    29.8 °F

  • Highest 15 January, 2026

    51.1 °F

Climate (2021–Present)

Laurence G Hanscom Field Airport (6.8 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    61.8 °F
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