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

UsSouth Twin Sister
Weather Forecast, United States

Issued: 9pm Thu 27 Jan Local Time
Updates in: hr min s
Update imminent
Mountain icon 3 South Twin Sister Elevations: 3 Forecast Elevations:
 

South Twin Sister Weather (Days 0-3):

A heavy fall of snow, heaviest during Sun morning. Freeze-thaw conditions (max 5°C on Thu night, min -8°C on Sun afternoon). Winds increasing (light winds from the SSW on Thu night, strong winds from the WSW by Sun afternoon).

(Days 3-6):

A moderate fall of snow, heaviest on Sun night. Temperatures will be well below freezing (max -9°C on Tue night, min -12°C on Mon night). Winds decreasing (fresh winds from the W on Sun night, light winds from the NW by Tue afternoon).

Thu
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wed
2
night AM PM night AM PM night AM PM night AM PM night AM PM night AM PM
partially cloudy
clear
clear
partially cloudy
partially cloudy
cloudy
moderate snow
heavy snow
snow showers
heavy snow
moderate snow
snow showers
light snow
partially cloudy
partially cloudy
cloudy
cloudy
partially cloudy
some clouds clear clear some clouds some clouds cloudy mod. snow heavy snow snow shwrs heavy snow mod. snow snow shwrs light snow some clouds some clouds cloudy cloudy some clouds
Wind km/h
20
SW
25
SW
25
SW
20
SW
25
SSW
30
SSW
25
SW
40
WSW
35
WSW
30
W
30
W
20
WNW
25
WNW
10
NNW
10
NNW
10
WNW
15
WNW
15
NW
Snow
 cm
- - - - - - 7 11 3 11 6 1 1 - - - - -
Rain
 mm
- - - - - - - - - - - - - - - - - -
Max °C
5 3 1 0 -2 -3 -4 -4 -6 -10 -11 -10 -11 -10 -10 -9 -10 -9
Min °C
4 2 1 -1 -2 -3 -4 -5 -8 -10 -11 -11 -12 -10 -10 -10 -10 -10
 Chill °C
1 -2 -4 -6 -9 -10 -11 -13 -15 -20 -21 -17 -19 -16 -15 -14 -17 -15
2850 2700 2400 1950 1850 1650 1250 1450 1250 600 600 550 0 350 500 0 300 450
Sea lvl3000ft6000ft9000ft12000ft15000ft
5310-2-3-4-4-6-10-11-10-11-10-10-9-10-9874321-10-2-6-6-6-7-8-7-8-8-78108497554110-200-300
Sunrise
- 7:41 - - 7:41 - - 7:39 - - 7:37 - - 7:37 - - 7:35 -
Sunset
- - 4:59 - - 5:00 - - 5:02 - - 5:04 - - 5:06 - - 5:07

South Twin Sister Weather (Days 0-3):

The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sun morning. Freeze-thaw conditions (max 5°C on Thu night, min -8°C on Sun afternoon). Winds increasing (light winds from the SSW on Thu night, strong winds from the WSW by Sun afternoon).

South Twin Sister Weather (Days 3-6):

A moderate fall of snow, heaviest on Sun night. Temperatures will be well below freezing (max -9°C on Tue night, min -12°C on Mon night). Winds decreasing (fresh winds from the W on Sun night, light winds from the NW by Tue 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.
1 hour ago
3° C
Dry
2
Calm
(2 kph at 210).
3
25 km WSW
198m alt.
35 minutes ago
0° C
-
0
Calm
(0 kph at 270).
0
25 km WNW
102m alt.
26 minutes ago
1° C
-
2
Calm
(2 kph at 113).
5
26 km NW
125m alt.
52 minutes ago
-3° C
-
3
Calm
(3 kph at 119).
5
27 km WSW
99m alt.
57 minutes ago
-1° C
-
0
Calm
(0 kph at 58).
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.