– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 am Sat 26 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 26 Sep Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Very mild (max 15°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light. | Days 4–6 Weather SummaryHeavy rain (total 31mm), heaviest during Thu night. Very mild (max 17°C on Thu morning, min 10°C on Thu night). Wind will be generally light. | |||||||||||||||||
Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 1 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | | |  | |  | | | | | |  | |
rain shwrs | some clouds | cloudy | some clouds | clear | some clouds | some clouds | clear | some clouds | light rain | light rain | mod. rain | light rain | light rain | some clouds | some clouds | light rain | heavy rain | |
Cloud base (m) | 6500 | 5750 | 3100 | 2600 | 500 | 450 | 400 | 400 | 500 | 800 | 400 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | — | — | — | — | — | — | — | — | 3 | 1.5 | 8 | 3 | 0.5 | — | — | 1.6 | 13 |
max °C | 11 | 14 | 9 | 13 | 15 | 10 | 12 | 15 | 12 | 12 | 13 | 13 | 14 | 16 | 15 | 17 | 16 | 13 |
min °C | 7 | 13 | 9 | 9 | 15 | 8 | 9 | 15 | 11 | 11 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 10 |
chill °C | 7 | 13 | 9 | 9 | 15 | 8 | 9 | 15 | 10 | 9 | 11 | 12 | 13 | 14 | 14 | 14 | 15 | 9 |
Freezing level m | 2100 | 2450 | 2750 | 2750 | 2850 | 3000 | 2650 | 2750 | 3300 | 3400 | 3400 | 3150 | 3250 | 3450 | 3450 | 3300 | 2950 | 2550 |
 | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — |
 | — | 6:57 | — | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:46 | — |
Loading...
Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Mostly dry. Very mild (max 15°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light.
Mount Si Weather (Days 3-6):
Heavy rain (total 31mm), heaviest during Thu night. Very mild (max 17°C on Thu morning, min 10°C on Thu 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 |
|---|---|---|---|---|---|
 | |||||
SHIP6738 | |||||
SHIP6128 | |||||
SHIP8181 | |||||
SHIP7363 | |||||
SHIP6235 | |||||
SHIP3783 |
* 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