– Lat/Long: 47.51° N 121.74° W
Mount Si
Weather Forecast,
United States
Issued: 3am Sat 16 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3am Sat 16 Jan Local Time
Updates in: hr min s
Update imminent Issued: 3am Sat 16 Jan Local Time
Updates in: hr min s
Update imminent 
Mount Si Weather (Days 0-3):A dusting of new snow. Freeze-thaw conditions (max 4°C on Mon afternoon, min -2°C on Sun night). Winds decreasing (fresh winds from the WSW on Sat night, calm by Mon night). |
(Days 3-6):A dusting of new snow. Freeze-thaw conditions (max 5°C on Wed morning, min -3°C on Thu night). Wind will be generally light. |
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Saturday
16
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Sunday
17
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Monday
18
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Tuesday
19
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Wednesday
20
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Thursday
21
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AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night |
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 |
 |
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Wind
km/h
|
 10 |
15 |
35 |
25 |
20 |
15 |
20 |
15 |
5 |
5 |
5 |
5 |
10 |
10 |
10 |
5 |
5 |
10 |
| some clouds | some clouds | light snow | some clouds | some clouds | clear | clear | clear | clear | some clouds | some clouds | clear | some clouds | some clouds | some clouds | cloudy | cloudy | light snow | |
Rain
mm
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Snow
cm
|
- | - | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
|
High
°C
|
2 | 2 | 2 | 1 | 0 | 0 | 3 | 4 | 3 | 4 | 4 | 4 | 5 | 5 | 4 | 1 | 0 | -2 |
|
Low
°C
|
2 | 1 | 1 | 0 | -1 | -2 | 3 | 4 | 3 | 4 | 4 | 3 | 5 | 4 | 2 | 1 | -1 | -3 |
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Chill
°C
|
0 | -1 | -3 | -4 | -5 | -5 | -1 | 0 | 1 | 3 | 2 | 3 | 3 | 3 | 2 | 1 | 0 | -5 |
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Freezing level
m
|
2050 | 1500 | 1450 | 1450 | 1250 | 900 | 1850 | 2050 | 2100 | 2550 | 2900 | 2450 | 2500 | 2350 | 2050 | 1500 | 1250 | 850 |
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7:48 | - | - | 7:48 | - | - | 7:47 | - | - | 7:46 | - | - | 7:46 | - | - | 7:45 | - | - |
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- | 4:44 | - | - | 4:45 | - | - | 4:46 | - | - | 4:49 | - | - | 4:50 | - | - | 4:51 | - |
Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: A dusting of new snowFreeze-thaw conditions (max 4°C on Mon afternoon, min -2°C on Sun night)Winds decreasing (fresh winds from the WSW on Sat night, calm by Mon night).
Mount Si Weather (Days 3-6):
A dusting of new snowFreeze-thaw conditions (max 5°C on Wed morning, min -3°C on Thu 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 | Cloud / Visibility |
|---|---|---|---|---|
Renton Airport | | |||
Stampede Pass Airport | | |||
Seattle Tacoma International Airport | | |||
Seattl / oeing Airport | | |||
BUOY-WPOW1 |
* 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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