Littleton Weather Forecast

    • 42
    • 56

    Rain

    • 37
    • 59

    Mostly Cloudy

    • 37
    • 62

    Partly Sunny

    • 37
    • 65

    Partly Sunny

    • 39
    • 65

    Mostly Cloudy

    • 42
    • 63

    Chance Rain Showers

Today 20 Sep Northern Grafton

A chance of rain Showers in the Morning, then rain in the afternoon. Highs in the mid 50s. Light and variable Winds. Chance of rain near 100 percent.

Tonight 20 Sep Northern Grafton

Cloudy. Rain likely in the evening. Patchy fog after midnight. Visibility one quarter mile or less at Times after midnight. Lows in the lower 40s. Light and variable Winds. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Littleton Temperature Statistics

September Temperature

Whitefield - Mount Washington Regional Airport (11.2 miles)

  • Lowest 12 September, 2026

    33.1 °F

  • Average September

    58.6 °F

  • Highest 3 September, 2026

    75.9 °F

Climate (2021–2026)

Whitefield - Mount Washington Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    43.9 °F

  • Average High 2021–2026

    55.1 °F
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