Washington Boro Weather Forecast

    • 60
    • 83

    Decreasing Clouds

    • 59
    • 81

    Mostly Sunny

    • 59
    • 80

    Mostly Sunny

    • 64
    • 84

    Partly Sunny

    • 72
    • 89

    Partly Sunny

    • 61
    • 84

    Slight Chance Rain Showers

Today 5 Sep Lancaster

Mostly sunny. Humid with Highs in the lower 80s. North Winds 5 to 10 Mph.

Tonight 5 Sep Lancaster

Mostly cloudy. Lows in the upper 60s. North Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Boro Temperature Statistics

September Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 2 September, 2026

    68 °F

  • Average September

    74.8 °F

  • Highest 1 September, 2026

    89.1 °F

Climate (2021–2026)

Lancaster, Lancaster Airport (12.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.1 °F
Get WillyWeather+ to remove ads