– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 am Sun 25 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sun 25 Oct Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 41mm), heaviest during Tue night. Mild temperatures (max 9°C on Sun afternoon, min 5°C on Tue night). Wind will be generally light. | Days 4–6 Weather SummaryModerate rain (total 10mm), heaviest on Wed morning. Very mild (max 10°C on Fri afternoon, min 4°C on Thu morning). Wind will be generally light. | |||||||||||||||||
Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | |  | | | |  |  |  | | |  | |
mod. rain | mod. rain | light rain | light rain | light rain | mod. rain | rain shwrs | rain shwrs | heavy rain | light rain | light rain | light rain | clear | some clouds | rain shwrs | some clouds | rain shwrs | clear | |
Cloud base (m) | 900 | 500 | 850 | 600 | 450 | 400 | 450 | 650 | 400 | 400 | 500 | 750 | 600 | 1650 | 1850 | 900 | 1850 | 6650 |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 5 | 5 | 0.2 | 0.7 | 1.5 | 8 | 1.1 | 0.9 | 18 | 5 | 4 | 2 | — | — | 0.2 | — | 0.1 | — |
max °C | 7 | 9 | 8 | 7 | 7 | 6 | 6 | 7 | 6 | 6 | 7 | 5 | 7 | 9 | 6 | 8 | 10 | 6 |
min °C | 7 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 6 | 5 | 4 | 8 | 4 | 5 | 9 | 5 |
chill °C | 5 | 6 | 7 | 6 | 5 | 6 | 4 | 3 | 2 | 3 | 5 | 4 | 1 | 6 | 3 | 5 | 9 | 3 |
Freezing level m | 1950 | 2100 | 2100 | 1700 | 1550 | 1500 | 1300 | 1350 | 1350 | 1300 | 1350 | 1350 | 1500 | 1650 | 1500 | 1600 | 1700 | 1850 |
 | 7:39 | — | — | 7:41 | — | — | 7:41 | — | — | 7:43 | — | — | 7:45 | — | — | 7:47 | — | — |
 | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:55 | — | — | 5:53 | — | — | 5:52 | — |
Loading...
Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 41mm), heaviest during Tue night. Mild temperatures (max 9°C on Sun afternoon, min 5°C on Tue night). Wind will be generally light.
Mount Si Weather (Days 3-6):
Moderate rain (total 10mm), heaviest on Wed morning. Very mild (max 10°C on Fri afternoon, min 4°C on Thu morning). Wind will be generally light.
This table gives the weather forecast for Mount Si at the specific elevation of 500 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 |
|---|---|---|---|---|---|
 | |||||
 | |||||
SHIP6576 | |||||
SHIP2718 | |||||
SHIP1405 | |||||
SHIP7504 | |||||
SHIP7190 | |||||
SHIP2364 |
* 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.
Mount Si Photos
View all
Cascade Range photos (454) |
Pacific Coast Ranges photos (1063) |
photos from mountains in United States (3071) |
all photos
Upload new photo
Upload new photoSunset on the Summit
Mt Si
Mount Si