Sisters Weather Forecast

    • 32
    • 66

    Becoming Sunny

    • 37
    • 71

    Partly Sunny

    • 40
    • 74

    Mostly Sunny

    • 41
    • 77

    Mostly Sunny

    • 41
    • 78

    Mostly Sunny

    • 39
    • 77

    Mostly Sunny

Today 18 May East Slopes of the Oregon Cascades

Mostly cloudy in the Morning, becoming partly cloudy. Highs in the lower 50s to lower 60s, except in the lower to mid 60s Valleys. Gusts up to 20 Mph in the afternoon.

Tonight 18 May East Slopes of the Oregon Cascades

Mostly clear. Lows in the upper 20s to mid 30s. Gusts up to 25 Mph in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sisters Temperature Statistics

May Temperature

Redmond Roberts Field (19.9 miles)

  • Lowest 14 May, 2026

    26.1 °F

  • Average May

    57.3 °F

  • Highest 12 May, 2026

    87.7 °F

Climate (2021–Present)

Redmond Roberts Field (19.9 miles)

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

  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    65.8 °F
Get WillyWeather+ to remove ads