– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 pm Wed 23 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 23 Sep Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 36mm), heaviest during Fri afternoon. Very mild (max 19°C on Thu afternoon, min 8°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 5mm), mostly falling on Tue afternoon. Very mild (max 13°C on Sun afternoon, min 7°C on Sun night). Wind will be generally light. | |||||||||||||||
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  | | |  | |  |  |  | | | |
rain shwrs | some clouds | some clouds | light rain | rain shwrs | heavy rain | heavy rain | rain shwrs | some clouds | cloudy | some clouds | clear | some clouds | light rain | rain shwrs | rain shwrs | |
Cloud base (m) | 6250 | 3200 | 600 | 650 | 550 | 500 | 500 | 6900 | 6050 | 4950 | 2350 | 1550 | 500 | 2250 | ||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | — | — | 3 | 3 | 15 | 15 | 0.1 | — | — | — | — | — | 0.3 | 1 | 0.6 |
max °C | 11 | 17 | 19 | 13 | 13 | 11 | 9 | 10 | 13 | 9 | 12 | 13 | 9 | 11 | 10 | 9 |
min °C | 10 | 12 | 17 | 11 | 11 | 9 | 8 | 8 | 12 | 8 | 9 | 13 | 7 | 8 | 10 | 9 |
chill °C | 10 | 12 | 17 | 10 | 10 | 6 | 6 | 8 | 12 | 8 | 9 | 13 | 6 | 8 | 9 | 9 |
Freezing level m | 3450 | 3400 | 3450 | 2700 | 2350 | 2000 | 1700 | 1900 | 2250 | 2500 | 2450 | 2350 | 2200 | 2100 | 2200 | 2450 |
 | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — |
 | — | — | 7:00 | — | — | 6:59 | — | — | 6:57 | — | — | 6:54 | — | — | 6:52 | — |
Loading...
Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 36mm), heaviest during Fri afternoon. Very mild (max 19°C on Thu afternoon, min 8°C on Fri night). Wind will be generally light.
Mount Si Weather (Days 3-6):
Light rain (total 5mm), mostly falling on Tue afternoon. Very mild (max 13°C on Sun afternoon, min 7°C on Sun night). 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 |
|---|---|---|---|---|---|
 | |||||
Seattl / oeing Airport | | ||||
 | |||||
BUOY-EBSW1 | |||||
SHIP4010 |
* 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 (3070) |
all photos
Upload new photo
Upload new photoSunset on the Summit
Mt Si
Mount Si