Boulder Lake Weather Forecast
- 44
- 56
Decreasing Clouds
- 48
- 59
Partly Sunny
- 51
- 65
Mostly Sunny
- 54
- 70
Mostly Sunny
- 54
- 71
Partly Sunny
- 51
- 65
Slight Chance Rain Showers
Today 26 Jul Cascades of Whatcom and Skagit Counties
Mostly cloudy in the morning then becoming mostly sunny. Freezing level near 11000 feet.
Tonight 26 Jul Cascades of Whatcom and Skagit Counties
Partly cloudy. Freezing level near 11500 feet.
Boulder Lake Temperature Statistics
July Temperature
Arlington Municipal Airport (39.8 miles)
Lowest 4 July, 2025
46 °FAverage July
64.7 °FHighest 16 July, 2025
91 °F
Climate (2020–Present)
Arlington Municipal Airport (39.8 miles)
Average Low 2020–2025
42.3 °FAverage 2020–2025
50.5 °FAverage High 2020–2025
59.7 °F