– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 4 pm Thu 10 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 10 Sep Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 6mm), mostly falling on Sat afternoon. Very mild (max 11°C on Fri night, min 5°C on Fri morning). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 3mm), mostly falling on Sun night. Very mild (max 15°C on Wed morning, min 5°C on Sun night). Winds decreasing (fresh winds from the SW on Sun afternoon, calm by Mon afternoon). | ||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | | | | | | | | |  |  | |
rain shwrs | rain shwrs | some clouds | some clouds | cloudy | cloudy | light rain | rain shwrs | light rain | light rain | rain shwrs | rain shwrs | rain shwrs | cloudy | some clouds | clear | clear | |
Cloud base (m) | 900 | 850 | 600 | 5450 | 4800 | 900 | 600 | 450 | 450 | 1850 | 600 | 5950 | 5450 | ||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 0.5 | — | — | — | — | 1.6 | 3 | 0.5 | 0.6 | 1.6 | 0.2 | 0.1 | — | — | — | — |
max °C | 10 | 10 | 6 | 10 | 11 | 10 | 10 | 7 | 6 | 7 | 7 | 6 | 9 | 10 | 11 | 12 | 13 |
min °C | 10 | 6 | 5 | 9 | 10 | 9 | 8 | 5 | 6 | 6 | 5 | 5 | 7 | 9 | 9 | 12 | 13 |
chill °C | 8 | 5 | 3 | 9 | 10 | 9 | 6 | 2 | 3 | 2 | 2 | 5 | 7 | 9 | 9 | 12 | 13 |
Freezing level m | 3300 | 2950 | 2850 | 2900 | 2800 | 2700 | 2550 | 2500 | 2550 | 2550 | 3100 | 3350 | 3250 | 3150 | 3000 | 3150 | 3400 |
 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — |
 | 7:29 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Light rain (total 6mm), mostly falling on Sat afternoon. Very mild (max 11°C on Fri night, min 5°C on Fri morning). Wind will be generally light.
Mount Si Weather (Days 3-6):
Light rain (total 3mm), mostly falling on Sun night. Very mild (max 15°C on Wed morning, min 5°C on Sun night). Winds decreasing (fresh winds from the SW on Sun afternoon, calm by Mon afternoon).
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 |
|---|---|---|---|---|---|
 | |||||
| |||||
Seattl / oeing Airport | | ||||
| |||||
BUOY-EBSW1 | |||||
* 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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