– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 3 am Tue 10 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Tue 10 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 28mm), heaviest during Tue afternoon. Very mild (max 13°C on Wed morning, min 6°C on Tue morning). Winds increasing (calm on Wed night, strong winds from the SE by Thu night). | Days 4–6 Weather SummaryHeavy rain (total 46mm), heaviest during Sun night. Mild temperatures (max 9°C on Fri morning, min 2°C on Sun night). Winds decreasing (near gales from the SE on Fri morning, calm by Sat morning). | |||||||||||||||||
Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | |  | |  |  |  | | | | |  | |
mod. rain | heavy rain | rain shwrs | some clouds | some clouds | cloudy | cloudy | cloudy | some clouds | cloudy | light rain | mod. rain | rain shwrs | rain shwrs | rain shwrs | heavy rain | light rain | heavy rain | |
Cloud base (m) | 450 | 400 | 2950 | 7100 | 6450 | 6400 | 5500 | 5350 | 6100 | 2950 | 2100 | 350 | 600 | 1550 | 1700 | 500 | 450 | 400 |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 9 | 18 | 1 | — | — | — | — | — | — | — | 0.2 | 9 | 3 | 1.7 | 7 | 10 | 4 | 11 |
max °C | 6 | 8 | 11 | 13 | 12 | 10 | 12 | 12 | 10 | 9 | 6 | 5 | 4 | 3 | 4 | 5 | 6 | 3 |
min °C | 6 | 7 | 9 | 12 | 12 | 9 | 10 | 11 | 9 | 7 | 5 | 3 | 3 | 3 | 3 | 4 | 3 | 2 |
chill °C | 2 | 3 | 5 | 10 | 11 | 8 | 8 | 9 | 7 | 2 | 1 | 1 | 3 | -1 | 0 | -1 | 0 | -2 |
Freezing level m | 2600 | 2750 | 2900 | 3100 | 3050 | 2950 | 2900 | 2950 | 2850 | 2550 | 2400 | 2000 | 1800 | 1700 | 1850 | 2200 | 2200 | 1700 |
 | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — |
 | — | 4:36 | — | — | 4:35 | — | — | 4:34 | — | — | 4:31 | — | — | 4:30 | — | — | 4:30 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Tue afternoon. Very mild (max 13°C on Wed morning, min 6°C on Tue morning). Winds increasing (calm on Wed night, strong winds from the SE by Thu night).
Mount Si Weather (Days 3-6):
Heavy rain (total 46mm), heaviest during Sun night. Mild temperatures (max 9°C on Fri morning, min 2°C on Sun night). Winds decreasing (near gales from the SE on Fri morning, calm by Sat morning).
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 |
|---|---|---|---|---|---|
 | |||||
| |||||
SHIP9698 | |||||
SHIP8577 | |||||
SHIP3013 | |||||
SHIP5951 | |||||
SHIP6378 | |||||
SHIP2503 |
* 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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