– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 22 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 22 Oct Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Freeze-thaw conditions (max 9°C on Thu morning, min 0°C on Fri morning). Winds decreasing (strong winds from the NNW on Thu night, calm by Sat morning). | Days 4–6 Weather SummaryMostly dry. Very mild (max 11°C on Mon morning, min 3°C on Tue night). Wind will be generally light. | |||||||||||||||||
Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | |  | | | | | | | | |  | |
some clouds | cloudy | some clouds | cloudy | rain shwrs | clear | clear | some clouds | cloudy | cloudy | cloudy | some clouds | some clouds | some clouds | cloudy | some clouds | some clouds | light rain | |
Cloud base (m) | 5450 | 700 | 8600 | 500 | 550 | 6750 | 6050 | 5450 | 6400 | 6050 | 5550 | 6000 | 6300 | 6150 | 2950 | 2550 | 2100 | 1600 |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — | 0.8 |
max °C | 9 | 6 | 3 | 1 | 3 | 5 | 7 | 8 | 8 | 9 | 9 | 9 | 11 | 11 | 10 | 9 | 7 | 6 |
min °C | 8 | 4 | 1 | 0 | 1 | 3 | 5 | 8 | 7 | 8 | 9 | 9 | 9 | 11 | 8 | 8 | 7 | 3 |
chill °C | 7 | 0 | -5 | -3 | -2 | 0 | 5 | 7 | 6 | 7 | 7 | 7 | 7 | 9 | 5 | 7 | 6 | 1 |
Freezing level m | 2950 | 2200 | 1750 | 1300 | 2200 | 2500 | 2700 | 2800 | 2850 | 2800 | 2800 | 2900 | 2850 | 2850 | 2550 | 2400 | 2300 | 1900 |
 | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:41 | — | — | 7:41 | — | — |
 | — | 6:06 | — | — | 6:05 | — | — | 6:02 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 9°C on Thu morning, min 0°C on Fri morning). Winds decreasing (strong winds from the NNW on Thu night, calm by Sat morning).
Mount Si Weather (Days 3-6):
Mostly dry. Very mild (max 11°C on Mon morning, min 3°C on Tue night). Wind will be generally light.
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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