– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 3 pm Wed 04 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Wed 04 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 23mm), heaviest during Fri night. Very mild (max 16°C on Sat morning, min 6°C on Thu night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 14mm), heaviest on Sat night. Very mild (max 15°C on Sat afternoon, min 4°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun afternoon). | ||||||||||||||||
Wed 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  | | | | |  | |  |  | |
light rain | rain shwrs | rain shwrs | rain shwrs | rain shwrs | light rain | light rain | heavy rain | some clouds | some clouds | heavy rain | rain shwrs | rain shwrs | some clouds | some clouds | clear | clear | |
Cloud base (m) | 2450 | 450 | 700 | 850 | 2600 | 1950 | 1700 | 400 | 550 | 800 | 550 | 800 | 6200 | 2200 | 2750 | ||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 7 | 1.5 | 0.1 | 0.1 | 0.3 | 1.8 | 12 | — | — | 13 | 1.1 | 0.2 | — | — | — | — |
max °C | 11 | 8 | 9 | 9 | 8 | 10 | 11 | 11 | 16 | 15 | 12 | 8 | 7 | 5 | 11 | 8 | 7 |
min °C | 9 | 7 | 7 | 7 | 6 | 9 | 10 | 9 | 14 | 13 | 7 | 7 | 6 | 4 | 8 | 6 | 6 |
chill °C | 8 | 5 | 5 | 7 | 6 | 8 | 9 | 8 | 14 | 12 | 3 | 4 | 6 | 3 | 8 | 5 | 4 |
Freezing level m | 2300 | 1700 | 1500 | 1600 | 2550 | 2350 | 2900 | 2900 | 3100 | 2950 | 1750 | 1450 | 1350 | 1800 | 2200 | 2050 | 2550 |
 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — |
 | 4:44 | — | — | 4:43 | — | — | 4:42 | — | — | 4:39 | — | — | 4:38 | — | — | 4:37 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 23mm), heaviest during Fri night. Very mild (max 16°C on Sat morning, min 6°C on Thu night). Wind will be generally light.
Mount Si Weather (Days 3-6):
Moderate rain (total 14mm), heaviest on Sat night. Very mild (max 15°C on Sat afternoon, min 4°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun afternoon).
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 | |||||
* 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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