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:
hr min s
Update imminent

Days 1–4 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 3°C on Sun afternoon, min -3°C on Thu night). Wind will be generally light.

Days 5–7 Weather Summary

A moderate fall of snow, heaviest on Wed morning. Freeze-thaw conditions (max 5°C on Mon night, min -6°C on Wed morning). Winds increasing (calm on Mon morning, fresh winds from the S by Tue night).

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
light rain
light snow
mod snow
part cloud
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
light rain
light snow
mod. snow
some clouds
some clouds
 km/h
20
SSE
0
NNE
10
NNW
5
NE
0
W
10
W
5
NE
5
NNE
10
WNW
10
WSW
0
WSW
5
WSW
5
WSW
10
SW
10
SSW
35
S
15
W
10
NW
10
N
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 
1.0
4
10
 mm 
0.2
0.3
max°C
-1
-3
0
1
0
1
1
1
3
3
1
4
5
5
5
4
-4
-4
-5
min°C
-3
-3
-1
0
0
1
0
1
3
2
1
3
5
5
4
-1
-6
-5
-6
chill°C 
-10
-3
-3
-3
0
-1
-3
-2
1
0
0
2
3
3
1
-6
-11
-9
-10
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 3°C on Sun afternoon, min -3°C on Thu night). Wind will be generally light.

South Twin Sister Weather (Days 3-6):

A moderate fall of snow, heaviest on Wed morning. Freeze-thaw conditions (max 5°C on Mon night, min -6°C on Wed morning). Winds increasing (calm on Mon morning, fresh winds from the S by Tue night).

This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.
1 hour ago
6° C
Dry
2
Calm
(2 kph at 48).
5
22 km WSW
94m alt.
58 minutes ago
8° C
Dry
5
Calm
(5 kph at 82).
34
25 km WSW
198m alt.
46 minutes ago
6° C
Dry
3
Calm
(3 kph at 270).
3
25 km WNW
102m alt.
50 minutes ago
7° C
Dry
0
Calm
(0 kph at 130).
5
26 km NW
125m alt.
31 minutes ago
6° C
Dry
2
Calm
(2 kph at 191).
3

* 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.