Larch Lake Weather Forecast
- 49
- 63
Mostly Cloudy
- 51
- 63
Mostly Cloudy
- 55
- 67
Chance Rain Showers
- 56
- 71
Chance Rain Showers
- 56
- 74
Mostly Sunny
- 53
- 71
Mostly Sunny
- 51
- 66
Partly Sunny
Today 19 Jul Foothills and Valleys of the North Cascades
Partly sunny. Highs in the mid 60s to lower 70s. South wind to 10 Mph in the morning becoming light.
Tonight 19 Jul Foothills and Valleys of the North Cascades
Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. Light wind.
Larch Lake Temperature Statistics
July Temperature
Arlington Municipal Airport (16.2 miles)
Lowest 4 July, 2025
46 °FAverage July
65.4 °FHighest 16 July, 2025
91 °F
Climate (2020–Present)
Arlington Municipal Airport (16.2 miles)
Average Low 2020–2025
42.3 °FAverage 2020–2025
50.5 °FAverage High 2020–2025
59.7 °F