Bertom Lake Weather Forecast
- 64
- 84
Increasing Clouds
- 68
- 85
Chance Thunderstorms
- 67
- 86
Rain Showers
- 62
- 82
Mostly Sunny
- 65
- 84
Mostly Sunny
- 67
- 85
Slight Chance Thunderstorms
Today 9 Jul Grant
Mostly sunny. Near steady temperature in the lower 80s. Light Winds.
Tonight 9 Jul Grant
Partly cloudy. Lows in the mid 60s. Northeast Winds around 5 Mph, becoming southeast after midnight.
Bertom Lake Temperature Statistics
July Temperature
Dubuque Regional Airport (23 miles)
Lowest 2 July, 2025
62.1 °FAverage July
76.1 °FHighest 4 July, 2025
90 °F
Climate (2020–Present)
Dubuque Regional Airport (23 miles)
Average Low 2020–2025
40.2 °FAverage 2020–2025
49.6 °FAverage High 2020–2025
58.9 °F