Bertom Lake Weather Forecast

    • 70
    • 81

    Mostly Cloudy

    • 76
    • 88

    Slight Chance Thunderstorms

    • 74
    • 93

    Mostly Sunny

    • 70
    • 88

    Chance Thunderstorms

    • 70
    • 87

    Slight Chance Thunderstorms

    • 70
    • 87

    Slight Chance Thunderstorms

    • 70
    • 90

    Slight Chance Thunderstorms

Today 21 Jul Grant

Mostly sunny. Areas of smoke. Near steady temperature around 80. Southeast Winds 5 to 10 Mph.

Tonight 21 Jul Grant

Mostly cloudy. Areas of smoke after midnight. Lows in the upper 60s. Southeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Bertom Lake Temperature Statistics

July Temperature

Dubuque Regional Airport (23 miles)

  • Lowest 13 July, 2025

    59.6 °F

  • Average July

    74.2 °F

  • Highest 4 July, 2025

    91.7 °F

Climate (2020–Present)

Dubuque Regional Airport (23 miles)

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  • Average Low 2020–2025

    40.2 °F

  • Average 2020–2025

    49.6 °F

  • Average High 2020–2025

    58.9 °F
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