Bellevue Weather Forecast

    • 53
    • 68

    Mostly Cloudy

    • 52
    • 68

    Rain Showers

    • 55
    • 65

    Rain Showers

    • 61
    • 81

    Rain Showers Likely

    • 61
    • 82

    Chance Rain Showers

    • 62
    • 84

    Chance Rain Showers

Today 21 May Allegheny

Considerable cloudiness. A slight chance of rain early. Highs in the mid 60s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 21 May Allegheny

Mostly cloudy. Lows in the lower 50s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bellevue Temperature Statistics

May Temperature

Pittsburgh, Pittsburgh International Airport (11.2 miles)

  • Lowest 2 May, 2026

    32.6 °F

  • Average May

    56.9 °F

  • Highest 18 May, 2026

    89.1 °F

Climate (2021–Present)

Pittsburgh, Pittsburgh International Airport (11.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    63.4 °F
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