Blaine Weather Forecast

    • 59
    • 77

    Slight Chance Thunderstorms

    • 61
    • 71

    Chance Thunderstorms

    • 60
    • 75

    Chance Thunderstorms

    • 62
    • 72

    Rain Showers

    • 62
    • 78

    Rain Showers Likely

    • 57
    • 70

    Chance Rain Showers

    • 54
    • 70

    Chance Rain Showers

Today 15 Sep Boone

Mostly cloudy. Highs in the lower 70s.

Tonight 15 Sep Boone

Cloudy. A chance of Showers and a slight chance of Thunderstorms. Lows in the upper 50s. North Winds 5 to 10 Mph. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Blaine Temperature Statistics

September Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 13 September, 2026

    50 °F

  • Average September

    69.2 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

Janesville-Rock County (16.8 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
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