Littleton Weather Forecast

    • 42
    • 66

    Becoming Sunny

    • 42
    • 67

    Partly Sunny

    • 45
    • 65

    Rain Showers Likely

    • 47
    • 56

    Chance Rain Showers

    • 51
    • 70

    Chance Rain Showers

    • 55
    • 78

    Partly Sunny

    • 53
    • 80

    Mostly Sunny

Today 21 May Central Middlesex County

Mostly cloudy and much cooler. Near steady temperature in the mid 60s. Northwest Winds around 5 Mph.

Tonight 21 May Central Middlesex County

Mostly cloudy this Evening, then becoming partly cloudy. Cooler with Lows in the lower 40s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Littleton Temperature Statistics

May Temperature

Laurence G Hanscom Field Airport (11.8 miles)

  • Lowest 9 May, 2026

    34 °F

  • Average May

    57.5 °F

  • Highest 19 May, 2026

    95 °F

Climate (2021–Present)

Laurence G Hanscom Field Airport (11.8 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.6 °F
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