Guernsey Weather Forecast

    • 65
    • 92

    Slight Chance Thunderstorms

    • 67
    • 89

    Mostly Sunny

    • 71
    • 95

    Chance Thunderstorms

    • 60
    • 86

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

    • 62
    • 83

    Chance Rain Showers

Today 18 Jul Poweshiek

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. West Winds 5 to 10 Mph, becoming northwest this afternoon. Chance of rain 20 percent. Heat index Values up to 102 this afternoon.

Tonight 18 Jul Poweshiek

Mostly clear. Humid with Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Guernsey Temperature Statistics

July Temperature

Oskaloosa, Oskaloosa Municipal Airport (29.8 miles)

  • Lowest 12 July, 2026

    64.4 °F

  • Average July

    79.8 °F

  • Highest 16 July, 2026

    94.1 °F

Climate (2021–2026)

Oskaloosa, Oskaloosa Municipal Airport (29.8 miles)

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

  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    65.3 °F
Get WillyWeather+ to remove ads