– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 3 am Fri 06 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Fri 06 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 26mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sun morning. Very mild (max 12°C on Sat morning, min 1°C on Sun afternoon). Winds decreasing (severe gales from the SW on Sat night, calm by Sun night). | Days 4–6 Weather SummaryLight rain (total 4mm), mostly falling on Tue afternoon. Very mild (max 14°C on Wed morning, min 4°C on Mon morning). Mainly fresh winds. | |||||||||||||||||
Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  |  |  | | | | | | | | | | |
light rain | mod. rain | rain shwrs | cloudy | some clouds | rain shwrs | light snow | rain shwrs | some clouds | cloudy | some clouds | some clouds | light rain | rain shwrs | some clouds | some clouds | some clouds | some clouds | |
Cloud base (m) | 700 | 850 | 1850 | 2650 | 6800 | 650 | 650 | 800 | 800 | 2650 | 2250 | 1700 | 550 | 6850 | 6300 | 7000 | 6300 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.6 | 8 | 0.5 | — | — | 13 | 3 | 1 | — | — | — | — | 1.8 | 2 | — | — | — | — |
max °C | 7 | 7 | 9 | 12 | 11 | 9 | 2 | 2 | 3 | 4 | 4 | 7 | 7 | 8 | 13 | 14 | 13 | 13 |
min °C | 6 | 6 | 6 | 11 | 11 | 2 | 2 | 1 | 1 | 4 | 4 | 4 | 7 | 7 | 9 | 14 | 13 | 12 |
chill °C | 1 | 0 | 2 | 9 | 9 | -6 | -6 | -5 | -2 | 2 | 0 | 1 | 3 | 3 | 8 | 13 | 12 | 11 |
Freezing level m | 2750 | 2800 | 2600 | 2850 | 2900 | 1600 | 1550 | 1650 | 1500 | 2100 | 1900 | 2400 | 2650 | 2750 | 3350 | 3550 | 3700 | 3600 |
 | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — |
 | — | 4:42 | — | — | 4:39 | — | — | 4:38 | — | — | 4:37 | — | — | 4:36 | — | — | 4:35 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 26mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sun morning. Very mild (max 12°C on Sat morning, min 1°C on Sun afternoon). Winds decreasing (severe gales from the SW on Sat night, calm by Sun night).
Mount Si Weather (Days 3-6):
Light rain (total 4mm), mostly falling on Tue afternoon. Very mild (max 14°C on Wed morning, min 4°C on Mon morning). Mainly fresh winds.
This table gives the weather forecast for Mount Si at the specific elevation of 1270 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Si. To see the weather forecasts for the other elevations, use the tab navigation above the table.For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
Renton Airport |  | ||||
Stampede Pass Airport |  | ||||
Seattle Tacoma International Airport | | ||||
Seattl / oeing Airport |  | ||||
BUOY-EBSW1 | |||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.
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