– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 3 am Sat 07 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sat 07 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 25mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sat night. Very mild (max 12°C on Sat morning, min 1°C on Sat night). Winds decreasing (gales from the SW on Sat night, calm by Sun night). | Days 4–6 Weather SummaryModerate rain (total 19mm), heaviest on Tue night. Very mild (max 15°C on Wed night, min 6°C on Tue morning). Mainly strong winds. | |||||||||||||||||
Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  | |  |  |  | |  | | | |  | | | |
some clouds | some clouds | snow shwrs | light snow | cloudy | some clouds | cloudy | light rain | mod. rain | mod. rain | mod. rain | rain shwrs | some clouds | some clouds | some clouds | clear | clear | some clouds | |
Cloud base (m) | 3000 | 6750 | 400 | 700 | 800 | 6900 | 2150 | 2350 | 550 | 500 | 450 | 1950 | 6850 | 7000 | 7150 | 7950 | 8800 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 14 | — | — | — | — | 4 | 7 | 8 | 7 | 5 | — | — | — | — | — | — |
max °C | 12 | 11 | 6 | 2 | 2 | 4 | 5 | 4 | 5 | 6 | 8 | 10 | 13 | 13 | 15 | 15 | 13 | 11 |
min °C | 11 | 11 | 1 | 1 | 1 | 1 | 4 | 2 | 4 | 6 | 8 | 9 | 12 | 12 | 13 | 14 | 12 | 7 |
chill °C | 9 | 8 | -7 | -6 | -3 | 1 | 1 | -2 | -1 | 2 | 4 | 5 | 10 | 11 | 12 | 13 | 11 | 2 |
Freezing level m | 2950 | 2900 | 1650 | 1450 | 1500 | 1800 | 2000 | 1700 | 2100 | 2500 | 2850 | 3000 | 3400 | 3500 | 3600 | 3650 | 3400 | 3050 |
 | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — |
 | — | 4:39 | — | — | 4:38 | — | — | 4:37 | — | — | 4:36 | — | — | 4:35 | — | — | 4:34 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 25mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sat night. Very mild (max 12°C on Sat morning, min 1°C on Sat night). Winds decreasing (gales from the SW on Sat night, calm by Sun night).
Mount Si Weather (Days 3-6):
Moderate rain (total 19mm), heaviest on Tue night. Very mild (max 15°C on Wed night, min 6°C on Tue morning). Mainly strong 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 |
|---|---|---|---|---|---|
 | |||||
SeattleS.-Tacoma-Wa. | |||||
Seattl / oeing Airport | | ||||
 | |||||
BUOY-EBSW1 | |||||
SHIP4779 | |||||
SHIP12354 | |||||
SHIP10995 |
* 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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