Lake Janus Weather Forecast
- 52
- 67
Rain Showers Likely
- 52
- 71
Chance Rain Showers
- 53
- 77
Mostly Sunny
- 51
- 74
Mostly Sunny
- 49
- 70
Mostly Sunny
- 50
- 70
Mostly Sunny
- 49
- 73
Mostly Sunny
Today 21 Jul Cascades of Snohomish and Northern King Counties
Mostly sunny until late afternoon then becoming mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers and a slight chance of Thunderstorms early in the afternoon. Showers likely and a chance of Thunderstorms late in the afternoon. Snow level near 10000 feet. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Afternoon pass Temperatures in the lower 60s. Light wind.
Tonight 21 Jul Cascades of Snohomish and Northern King Counties
Mostly cloudy. A chance of Thunderstorms in the Evening, then a chance of Showers and a slight chance of Thunderstorms late in the evening. A slight chance of Showers after midnight. Snow level near 10500 feet. Lows in the lower 50s. Light wind.
Lake Janus Temperature Statistics
July Temperature
Stampede Pass (39.8 miles)
Lowest 3 July, 2025
44.1 °FAverage July
58.5 °FHighest 1 July, 2025
78.1 °F
Climate (2020–Present)
Stampede Pass (39.8 miles)
Average Low 2020–2025
36.2 °FAverage 2020–2025
41.5 °FAverage High 2020–2025
48.4 °F