Mount Si weather
– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States

Issued: 9 pm Tue 02 Dec Local Time
Updates in:
hr min s
Update imminent

Days 1–4 Weather Summary

A light covering of new snow mostly falling on Thu afternoon will be washed away by heavy rain (total 42mm) on Thu night. Freeze-thaw conditions (max 4°C on Thu night, min -1°C on Wed afternoon). Winds increasing (calm on Tue night, gales from the WSW by Fri morning).

Days 5–7 Weather Summary

A light covering of new snow mostly falling on Fri night will be washed away by heavy rain (total 53mm) on Mon afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min 0°C on Fri night). Winds increasing (moderate winds from the SW on Sat night, severe gales from the SW by Mon afternoon).

Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
part cloud
cloud
cloud
cloud
light snow
light snow
heavy rain
heavy rain
light snow
light snow
light snow
light snow
cloud
mod rain
mod rain
light rain
mod rain
heavy rain
light snow
some clouds
cloudy
cloudy
cloudy
light snow
light snow
heavy rain
heavy rain
light snow
light snow
light snow
light snow
cloudy
mod. rain
mod. rain
light rain
mod. rain
heavy rain
light snow
 km/h
5
NW
10
NNW
15
NNW
5
W
20
WSW
25
WSW
30
WSW
50
SW
55
WSW
35
WSW
30
SW
30
WSW
25
SW
45
SSW
60
WSW
35
WSW
35
SW
45
SSW
45
WSW
 cm 
3
3
1
3
2
1
1
 mm 
3
22
12
5
13
9
8
4
6
13
8
max°C
1
0
0
1
1
3
4
4
3
2
0
1
2
4
5
5
5
6
5
min°C
0
0
-1
0
1
2
3
4
1
0
0
1
1
3
5
4
4
3
0
chill°C 
-3
-3
-5
-3
-4
-3
-3
-3
-7
-8
-7
-5
-5
-4
-2
-2
-3
-4
-7
Freezing level (m
1450
1250
1150
1450
1400
1750
2200
2050
1700
1600
1250
1400
1500
1900
2150
2000
2100
2050
1650
Cloud base (m)
650
2350
700
450
450
400
400
400
400
400
450
400
400
600
400
450
450
400
450
Sea lvl1000m2000m3000m4000m5000m
10-11134421012455553444456798766679910108
Sunrise
7:35
7:37
7:37
7:39
7:39
7:41
Sunset
4:16
4:15
4:15
4:15
4:15
4:15

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Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A light covering of new snow mostly falling on Thu afternoon will be washed away by heavy rain (total 42mm) on Thu night. Freeze-thaw conditions (max 4°C on Thu night, min -1°C on Wed afternoon). Winds increasing (calm on Tue night, gales from the WSW by Fri morning).

Mount Si Weather (Days 3-6):

A light covering of new snow mostly falling on Fri night will be washed away by heavy rain (total 53mm) on Mon afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min 0°C on Fri night). Winds increasing (moderate winds from the SW on Sat night, severe gales from the SW by Mon afternoon).

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.

Live conditions reported by 5 closest weather stations

Weather StationTemp.WeatherWindGusts
Cloud
Visibility
Cloud / Visibility
6 km SSW
251m alt.
48 minutes ago
6° C
Dry
0
Calm
(0 kph at 205).
0
32 km SSW
192m alt.
54 minutes ago
-
2
Calm
(2 kph at 0).
5
36 km WSW
218m alt.
2 hours ago
7° C
cloudy
Dry and cloudy.
Wind obs. (7 kph from 350 degs) was rejected.
16 km
Low: overcast
39 km SW
119m alt.
56 minutes ago
-2° C
-
0
Calm
(0 kph at 151).
0
40 km SE
628m alt.
2 hours ago
-2° C
cloudy
Dry and cloudy.
0
Calm
(0 kph at 0).
16 km
Low: overcast
Seattl / oeing Airport
44 km WSW
218m alt.
2 hours ago
7° C
cloudy
Dry and cloudy.
0
Calm
(0 kph at 0).
16 km
Low: overcast
44 km WSW
218m alt.
2 hours ago
6° C
cloudy
Dry and cloudy.
6
Light winds from the N
(6 kph at 350).
16 km
Low: overcast
49 km NW
196m alt.
2 hours ago
4° C
Dry
2
Calm
(2 kph at 198).
3
49 km WSW
100m alt.
32 minutes ago
6° C
-
SHIP1485
54 km W
-m alt.
1 hour ago
7° C
-
2
Calm
(2 kph at 10).

* 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.

Mount Si Photos