– Lat/Long: 47.51° N 121.74° W
Mount Si
Weather Forecast, United StatesIssued: 3 am Thu 12 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Thu 12 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Thu 12 Feb Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 14mm), heaviest on Fri night. Freeze-thaw conditions (max 8°C on Thu morning, min 0°C on Sat night). Wind will be generally light. | Days 4–6 Weather SummaryA light fall of snow, heaviest on Mon night. Turning milder with light rain (total 3mm) on Tue morning. Freeze-thaw conditions (max 7°C on Mon morning, min 0°C on Sun afternoon). Wind will be generally light. | |||||||||||||||||
Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | Tuesday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | | | | |  | | |  |  |  | | | |
some clouds | some clouds | some clouds | light rain | light rain | mod. rain | light rain | light rain | some clouds | some clouds | clear | some clouds | some clouds | cloudy | mod. snow | light snow | light rain | mod. snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 2 | — | 8 | |
— | — | — | 0.1 | 4 | 9 | 0.8 | 0.2 | — | — | — | — | — | — | 0.1 | 3 | 0.4 | — | |
max °C | 8 | 8 | 5 | 6 | 5 | 3 | 3 | 3 | 1 | 4 | 3 | 1 | 7 | 7 | 4 | 3 | 2 | 2 |
min °C | 7 | 4 | 4 | 5 | 4 | 2 | 2 | 1 | 0 | 2 | 0 | 0 | 4 | 5 | 2 | 2 | 2 | 0 |
6 | 3 | 3 | 3 | 2 | 0 | 2 | 1 | 0 | 2 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | -2 | |
1700 | 1450 | 1300 | 1250 | 1200 | 950 | 800 | 900 | 600 | 850 | 950 | 450 | 1300 | 1550 | 1150 | 950 | 1050 | 600 | |
Cloud base (m) | 5600 | 2800 | 2100 | 550 | 500 | 400 | 400 | 500 | 2350 | 1800 | 800 | 400 | 4650 | 2550 | 550 | 400 | 400 | 400 |
 | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — |
 | — | 5:24 | — | — | 5:27 | — | — | 5:29 | — | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Moderate rain (total 14mm), heaviest on Fri night. Freeze-thaw conditions (max 8°C on Thu morning, min 0°C on Sat night). Wind will be generally light.
Mount Si Weather (Days 3-6):
A light fall of snow, heaviest on Mon night. Turning milder with light rain (total 3mm) on Tue morning. Freeze-thaw conditions (max 7°C on Mon morning, min 0°C on Sun afternoon). 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 |
|---|---|---|---|---|---|
 | |||||
 | |||||
SHIP3418 | |||||
SHIP2144 | |||||
SHIP2847 | |||||
SHIP9288 | |||||
SHIP4980 |
* 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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