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– Lat/Long: 48.71° N 121.99° W

South Twin Sister
Weather Forecast, United States

Issued: 4 am Fri 09 May Local Time
Updates in:
3min 40s
Update imminent

Days 1–3 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 4°C on Fri afternoon, min -3°C on Sat night). Winds decreasing (fresh winds from the SSW on Sat morning, calm by Sun night).

Days 4–6 Weather Summary

A dusting of new snow. Temperatures will be below freezing (max 0°C on Tue night, min -3°C on Mon morning). Wind will be generally light.

Friday
9
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light snow
snow showers
cloud
cloud
part cloud
cloud
cloud
cloud
light snow
part cloud
part cloud
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
light snow
snow shwrs
cloudy
cloudy
some clouds
cloudy
cloudy
cloudy
light snow
some clouds
some clouds
 mph
15
SSW
15
SSW
15
SSW
20
SSW
15
SSW
10
SSW
5
SSW
5
SSW
5
NW
5
NNW
5
NW
5
NNW
5
N
5
NW
5
W
5
WNW
5
W
5
WNW
 in 
0.4
0.4
1
 in 
max°F
36
39
39
36
30
28
27
28
27
27
28
30
30
30
32
30
30
32
min°F
36
37
37
30
30
27
27
28
27
27
27
30
30
30
30
28
30
32
chill°F 
27
28
28
18
18
18
18
21
21
19
21
25
25
25
25
25
27
27
Freezing level (ft
8200
9000
8900
6700
6400
5600
5700
5900
5200
5200
6100
6100
6100
6600
6400
6100
6400
6600
Cloud base (ft)
21300
20700
6900
7100
5900
2500
5600
5700
2500
4900
6900
2500
2500
2500
2000
2000
2000
Sea lvl3000ft6000ft9000ft12000ft15000ft
363838333028272827272830303031293032424646393735333634333736343737363636556154525247485045465046475047464946
Sunrise
5:35
5:33
5:31
5:31
5:28
5:28
Sunset
8:34
8:35
8:36
8:37
8:38
8:39

Days 7-12 Weather Summary

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South Twin Sister Weather (Days 0-3):

The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 4°C on Fri afternoon, min -3°C on Sat night). Winds decreasing (fresh winds from the SSW on Sat morning, calm by Sun night).

South Twin Sister Weather (Days 3-6):

A dusting of new snow. Temperatures will be below freezing (max 0°C on Tue night, min -3°C on Mon morning). Wind will be generally light.

This table gives the weather forecast for South Twin Sister at the specific elevation of 2134 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. 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
13.7 miles WSW
308ft alt.
2 hours ago
41°F
Dry
0
Calm
(0 mph at 135).
2
15.5 miles WNW
335ft alt.
2 hours ago
46°F
Dry
0
Calm
(0 mph at 159).
0
15.5 miles WSW
650ft alt.
2 hours ago
46°F
Dry
0
Calm
(0 mph at 270).
0
16.2 miles NW
410ft alt.
48 minutes ago
39°F
Dry
0
Calm
(0 mph at 22).
2
16.8 miles WSW
325ft alt.
44 minutes ago
43°F
Dry
2
Calm
(2 mph at 46).
2
17.4 miles NW
499ft alt.
2 hours ago
37°F
Dry
0
Calm
(0 mph at 354).
0
18.6 miles WSW
427ft alt.
1 hour ago
45°F
Dry
0
Calm
(0 mph at 234).
0
21.1 miles SW
23ft alt.
1 hour ago
45°F
Dry
0
Calm
(0 mph at 242).
0
21.7 miles WNW
62ft alt.
56 minutes ago
45°F
Dry
0
Calm
(0 mph at 0).
0
21.7 miles WSW
328ft alt.
58 minutes ago
43°F
Dry
1
Calm
(1 mph at 352).
2

* 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.