Belfast Weather Forecast

    • 40
    • 48

    Rain Showers Likely

    • 42
    • 47

    Rain

    • 36
    • 57

    Chance Rain Showers

    • 38
    • 56

    Mostly Cloudy

    • 37
    • 53

    Slight Chance Rain Showers

    • 43
    • 58

    Slight Chance Rain Showers

    • 43
    • 58

    Chance Rain Showers

Today 29 Apr Coastal Waldo

Showers likely. Highs in the upper 40s. East Winds around 10 Mph. Chance of rain 70 percent.

Tonight 29 Apr Coastal Waldo

Showers likely. Patchy fog. Lows around 40. Light and variable Winds, becoming southeast around 10 Mph with Gusts up to 20 Mph after midnight. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Belfast Temperature Statistics

April Temperature

Rockland, Knox County Regional Airport (24.9 miles)

  • Lowest 7 April, 2026

    24.1 °F

  • Average April

    41.5 °F

  • Highest 17 April, 2026

    66 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (24.9 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.9 °F
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