South Twin Sister
Weather Forecast, United States

 

Days 0-3 South Twin Sister Weather Summary:

A heavy fall of snow, heaviest during Tue afternoon. Temperatures will be below freezing (max -5°C on Sun afternoon, min -8°C on Sun night). Wind will be generally light.

Days 3-6 South Twin Sister Weather Summary:

A heavy fall of snow, heaviest during Fri afternoon. Temperatures will be below freezing (max -5°C on Wed afternoon, min -8°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the SSW by Fri night).

PM night AM PM night AM PM night AM PM night AM PM night AM PM night AM
clear
clear
clear
partially cloudy
snow showers
light snow
moderate snow
moderate snow
cloudy
cloudy
partially cloudy
clear
partially cloudy
partially cloudy
light snow
moderate snow
moderate snow
light snow
Wind km/h
10 NNE10
5 ENE5
5 WNW5
5 W5
10 W10
15 SW15
15 SW15
5 NW5
10 NE10
10 N10
10 NE10
5 ENE5
0 SSW0
10 SSW10
25 SSE25
30 SSE30
30 SW30
10 SSE10
clear clear clear some clouds snow shwrs light snow mod. snow mod. snow cloudy cloudy some clouds clear some clouds some clouds light snow mod. snow mod. snow light snow
Rain
Rain mm
- - - - - - - - - - - - - - - - - -
Snow
Snow cm
- - - - 1 5 7 10 - - - - - - 4 8 9 2
High °C
-5 -6 -8 -7 -7 -6 -5 -6 -6 -5 -5 -6 -6 -6 -7 -6 -7 -7
Low °C
-6 -8 -8 -7 -7 -6 -6 -7 -7 -5 -6 -6 -6 -7 -7 -6 -8 -8
Chill °C
-9 -9 -11 -10 -11 -12 -11 -11 -10 -9 -10 -9 -6 -10 -15 -14 -16 -7
Freezing level m
750 0 0 500 0 400 600 450 450 750 0 400 700 0 400 500 350 350
Sea lvl3000ft6000ft9000ft12000ft15000ft
mountain backdrop
-9-10-9-8-8-10-10-10-10-9-10-10-10-10-9-9-11-12-5-6-8-7-7-6-5-6-6-5-5-6-6-6-7-6-7-72-400-201012-212-20001
Sunrise
- - 7:09 - - 7:07 - - 7:05 - - 7:05 - - 7:03 - - 7:01
Sunset
5:31 - - 5:32 - - 5:35 - - 5:37 - - 5:37 - - 5:39 - -

Issued local time.

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.WeatherWind
Cloud
Visibility
Cloud / Visibility
Lyman
19 km S
155m alt.
2 hours ago
1° C
-
0
Calm
(0 kph at 276).
Bellingham
25 km WSW
198m alt.
36 minutes ago
1° C
-
2
Calm
(2 kph at 225).
Deming
25 km WNW
102m alt.
34 minutes ago
1° C
-
0
Calm
(0 kph at 44).
Bellingham
29 km W
71m alt.
40 minutes ago
-1° C
-
0
Calm
(0 kph at 270).
Bellingham
32 km W
130m alt.
2 hours ago
-
3
Calm
(3 kph at 299).

* 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. We also include passing Ship data if it is recorded close to South Twin Sister and within an acceptable time window.