Mount Si weather
– Lat/Long: 47.51° N 121.74° W

UsMount Si
Weather Forecast, United States

Issued: 9am Mon 29 Nov Local Time
Updates in: hr min s
Update imminent 
Mountain icon 2 Mount Si Elevations: 2 Forecast Elevations:
 

Mount Si Weather (Days 0-3):

Moderate rain (total 18mm) heaviest on Tue morning, then becoming colder with a dusting of snow on Wed night. Mild temperatures (max 8°C on Tue night, min 2°C on Wed night). Winds increasing (moderate winds from the WSW on Mon morning, strong winds from the WSW by Tue afternoon).

(Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 3°C on Fri night, min -4°C on Fri night). Winds increasing (light winds from the NW on Thu afternoon, fresh winds from the WSW by Fri night).

Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
AM PM night AM PM night AM PM night AM PM night AM PM night AM PM night
rain showers
rain showers
light rain
moderate rain
light rain
partially cloudy
partially cloudy
cloudy
light snow
light snow
partially cloudy
clear
partially cloudy
partially cloudy
cloudy
light snow
partially cloudy
partially cloudy
rain shwrs rain shwrs light rain mod. rain light rain some clouds some clouds cloudy light snow light snow some clouds clear some clouds some clouds cloudy light snow some clouds some clouds
Wind km/h
20
WSW
20
SW
35
SW
40
SW
30
WSW
35
SW
35
WSW
35
SW
40
WSW
20
SW
5
NW
15
N
10
E
15
ESE
10
SSW
25
WSW
5
NW
10
N
See all weather maps
Snow
 cm
- - - - - - - - 1 1 - - - - - 3 - -
Rain
 mm
5 1 4 6 1 - - - 1 - - - - - - - - -
Max °C
5 5 5 3 7 8 8 8 7 1 -2 0 2 2 3 -4 -4 -2
Min °C
5 5 3 3 6 8 8 8 2 -1 -3 -3 1 1 -4 -4 -4 -3
 Chill °C
1 1 0 -3 2 3 4 3 2 -4 -4 -3 -1 -1 1 -11 -7 -5
 Freezing Level m
2000 2100 2100 3150 3200 3200 2950 2900 2300 1400 900 700 1650 1650 1700 650 650 0
Sea lvl3000ft6000ft9000ft12000ft15000ft
5553788871-20223-4-4-21010109911141211632544110
Sunrise
7:31 - - 7:31 - - 7:33 - - 7:35 - - 7:35 - - 7:37 - -
Sunset
- 4:17 - - 4:17 - - 4:16 - - 4:16 - - 4:16 - - 4:15 -

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 18mm) heaviest on Tue morning, then becoming colder with a dusting of snow on Wed night. Mild temperatures (max 8°C on Tue night, min 2°C on Wed night). Winds increasing (moderate winds from the WSW on Mon morning, strong winds from the WSW by Tue afternoon).

Mount Si Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 3°C on Fri night, min -4°C on Fri night). Winds increasing (light winds from the NW on Thu afternoon, fresh winds from the WSW by Fri night).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Si. 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
30 km ESE
824m alt.
1 hour ago
8° C
-
0
Calm
(0 kph at 0).
0
Renton Airport
36 km WSW
218m alt.
2 hours ago
15.0° C
clear
-
11
Light winds from the S
(11 kph at 180).
16 km
Low: few
39 km SW
119m alt.
1 hour ago
-
5
Calm
(5 kph at 0).
5
Stampede Pass Airport
40 km SE
628m alt.
2 hours ago
7.2° C
cloudy
Dry and cloudy.
7
Light winds from the N
(7 kph at 1).
16 km
Low: broken
Mid: overcast
43 km WNW
137.2m alt.
51 minutes ago
11° C
Dry
3
Calm
(3 kph at 311).
10

* 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.

Mount Si Photos