– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 4 pm Thu 08 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 08 Oct Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryModerate rain (total 11mm), heaviest on Fri morning. Warm (max 21°C on Thu afternoon, min 6°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 14mm), heaviest on Wed morning. Very mild (max 14°C on Tue afternoon, min 6°C on Sun night). Wind will be generally light. | ||||||||||||||||
Thu 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | | | | |  |  | | | |
clear | rain shwrs | light rain | light rain | light rain | rain shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | some clouds | some clouds | clear | light rain | |
Cloud base (m) | 8900 | 8850 | 400 | 500 | 400 | 500 | 850 | 1700 | 3100 | 6650 | 5950 | 2100 | |||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 0.1 | 4 | 2 | 4 | 0.8 | 0.1 | — | — | — | — | — | — | — | — | — | 2 |
max °C | 21 | 15 | 12 | 10 | 7 | 7 | 9 | 6 | 10 | 11 | 8 | 11 | 13 | 9 | 12 | 14 | 11 |
min °C | 19 | 12 | 11 | 8 | 6 | 6 | 9 | 6 | 6 | 11 | 6 | 6 | 13 | 9 | 10 | 14 | 10 |
chill °C | 19 | 11 | 9 | 8 | 4 | 6 | 9 | 6 | 5 | 11 | 6 | 6 | 13 | 9 | 10 | 14 | 10 |
Freezing level m | 4050 | 3750 | 2350 | 1700 | 1400 | 1350 | 1700 | 1850 | 1950 | 2150 | 2650 | 3550 | 3550 | 3300 | 3200 | 3000 | 2650 |
 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:22 | — | — |
 | 6:32 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — | — | 6:24 | — | — | 6:22 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Moderate rain (total 11mm), heaviest on Fri morning. Warm (max 21°C on Thu afternoon, min 6°C on Fri night). Wind will be generally light.
Mount Si Weather (Days 3-6):
Moderate rain (total 14mm), heaviest on Wed morning. Very mild (max 14°C on Tue afternoon, min 6°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 |
|---|---|---|---|---|---|
 | |||||
| |||||
SHIP3241 | |||||
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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