Stimson Hill Weather Forecast
- 48
- 58
Rain Likely
- 51
- 63
Mostly Sunny
- 55
- 78
Sunny
- 48
- 66
Mostly Sunny
- 48
- 65
Mostly Sunny
- 51
- 69
Mostly Sunny
- 51
- 68
Chance Rain
Today 14 Sep Foothills and Valleys of the North Cascades
A chance of Showers in the Morning, then Showers in the late morning and early afternoon. A chance of Showers late in the afternoon. Patchy fog in the late morning and early afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the 60s. Light wind becoming south to 10 Mph in the afternoon.
Tonight 14 Sep Foothills and Valleys of the North Cascades
Patchy fog in the evening. Mostly cloudy with Showers likely and a slight chance of Thunderstorms in the Evening, then mostly cloudy with a chance of rain in the late evening and early morning. Mostly cloudy late in the night. Rainfall Amounts less than a tenth of an inch Likely, except higher Amounts possible in Thunderstorms. Lows in the upper 40s to mid 50s. South wind to 10 Mph becoming northeast after midnight. Gusts to 20 Mph.
Stimson Hill Temperature Statistics
September Temperature
Arlington Municipal Airport (9.9 miles)
Lowest 9 September, 2025
51.8 °FAverage September
63.3 °FHighest 3 September, 2025
81 °F
Climate (2020–Present)
Arlington Municipal Airport (9.9 miles)
Average Low 2020–2025
42.4 °FAverage 2020–2025
50.6 °FAverage High 2020–2025
59.7 °F