South Twin Sister
Weather Forecast, United States

 

Days 0-3 South Twin Sister Weather Summary:

Heavy rain (total 51mm), heaviest during Thu night. Mild temperatures (max 8°C on Fri morning, min 4°C on Wed night). Winds increasing (calm on Tue night, strong winds from the SSE by Fri morning).

Days 3-6 South Twin Sister Weather Summary:

Heavy rain (total 60mm), heaviest during Sat morning. Mild temperatures (max 9°C on Mon night, min 3°C on Sat night). Winds decreasing (gales from the S on Fri night, calm by Mon afternoon).

night AM PM night AM PM night AM PM night AM PM night AM PM night AM PM
partially cloudy
partially cloudy
partially cloudy
rain showers
light rain
light rain
heavy rain
moderate rain
light rain
heavy rain
heavy rain
moderate rain
rain showers
partially cloudy
partially cloudy
clear
clear
clear
Wind km/h
0 ENE0
5 SW5
10 WSW10
10 WSW10
10 SW10
10 SW10
20 SSE20
40 S40
30 SSE30
50 S50
25 SW25
20 WSW20
10 SW10
5 NW5
5 WNW5
10 N10
5 NNE5
0 NNW0
some clouds some clouds some clouds rain shwrs light rain light rain heavy rain mod. rain light rain heavy rain heavy rain mod. rain rain shwrs some clouds some clouds clear clear clear
Rain
Rain mm
- - - 1 2 4 32 7 5 22 28 7 3 - - - - -
Snow
Snow cm
- - - - - - - - - - - - - - - - - -
High °C
7 5 7 5 4 5 7 8 8 8 5 5 5 3 5 6 7 8
Low °C
6 5 6 4 4 4 4 7 8 6 5 5 3 3 4 5 6 8
Chill °C
7 5 5 3 1 3 2 3 4 3 0 1 2 3 4 6 6 7
Freezing level m
2750 2450 2450 2150 2100 2300 3000 2850 3050 2550 2400 2300 2150 2250 2650 3100 3350 3450
Sea lvl3000ft6000ft9000ft12000ft15000ft
mountain backdrop
422101445421112446757545788855535678121315111112111416141212111113101416
Sunrise
- 6:50 - - 6:50 - - 6:52 - - 6:54 - - 6:54 - - 6:56 -
Sunset
- - 7:12 - - 7:09 - - 7:07 - - 7:06 - - 7:02 - - 7:00

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.
1 hour ago
10° C
Dry
0
Calm
(0 kph at 190).
Bellingham
25 km WSW
198m alt.
44 minutes ago
10° C
Dry
0
Calm
(0 kph at 225).
Deming
25 km WNW
102m alt.
1 hour ago
11° C
Dry
0
Calm
(0 kph at 130).
Bellingham
29 km W
71m alt.
47 minutes ago
7° C
Dry
0
Calm
(0 kph at 270).
Bellingham
32 km W
130m alt.
33 minutes ago
5° C
Dry
0
Calm
(0 kph at 179).

* 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.