Mountain resort image
– Lat/Long: 48.71° N 121.99° W

UsSouth Twin Sister
Weather Forecast, United States

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Issued: 10 pm Thu 28 Mar Local Time
Updates in:
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Update imminent

Days 1–4 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 1°C on Sun afternoon, min -7°C on Thu night). Mainly fresh winds.

Days 5–7 Weather Summary

A heavy fall of snow, heaviest during Wed morning. Freeze-thaw conditions (max 3°C on Mon afternoon, min -10°C on Wed morning). Winds decreasing (near gales from the SSW on Tue night, light winds from the NW by Wed afternoon).

Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light snow
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
mod snow
heavy snow
snow showers
part cloud
light snow
some clouds
some clouds
clear
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
mod. snow
heavy snow
snow shwrs
some clouds
 km/h
25
S
5
E
10
N
5
NE
5
NW
15
W
15
NE
20
NNE
20
NNW
25
WNW
20
NW
25
NW
20
WNW
25
WSW
25
SW
50
SSW
15
WSW
10
NW
20
NNE
Wave Height Map
T washington.wind.3.cc23
T washington.wind.21.cc23
T washington.wind.45.cc23
T washington.wind.69.cc23
T washington.wind.93.cc23
T washington.wind.117.cc23
T washington.wind.141.cc23
 cm 
2.0
6
13
1.0
 mm 
max°C
-6
-7
-5
-4
-4
-3
-4
-2
1
2
1
3
3
2
2
1
-7
-9
-8
min°C
-7
-7
-5
-4
-4
-4
-5
-4
0
1
1
2
2
2
1
-5
-10
-10
-9
chill°C 
-16
-10
-7
-9
-7
-9
-11
-10
-5
-5
-4
-3
-3
-3
-5
-13
-17
-17
-14
Freezing level (m
1000
1150
1500
1600
1500
1600
1550
1750
2250
3000
3200
3300
2850
2550
2400
1900
700
950
450
Cloud base (m)
550
650
850
1850
2300
1850
1850
2750
1850
1800
700
600
1450
600
Sea lvl1000m2000m3000m4000m5000m
-7-7-5-4-4-4-5-31213322-2-9-10-9-2-3-11011133145552-5-5-644857957117912911128240
Sunrise
6:50
6:48
6:46
6:43
6:41
6:39
Sunset
7:35
7:36
7:37
7:38
7:40
7:42

South Twin Sister Weather (Days 0-3):

The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 1°C on Sun afternoon, min -7°C on Thu night). Mainly fresh winds.

South Twin Sister Weather (Days 3-6):

A heavy fall of snow, heaviest during Wed morning. Freeze-thaw conditions (max 3°C on Mon afternoon, min -10°C on Wed morning). Winds decreasing (near gales from the SSW on Tue night, light winds from the NW by Wed afternoon).

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
19 km S
155m alt.
28 minutes ago
6° C
Dry
2
Calm
(2 kph at 12).
5
22 km WSW
94m alt.
51 minutes ago
7° C
Dry
2
Calm
(2 kph at 142).
24
25 km WSW
198m alt.
55 minutes ago
6° C
Dry
0
Calm
(0 kph at 90).
0
25 km WNW
102m alt.
2 hours ago
7° C
Dry
2
Calm
(2 kph at 116).
10
26 km NW
125m alt.
53 minutes ago
6° C
Dry
3
Calm
(3 kph at 134).
6

* 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.