– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Mon 09 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Mon 09 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 3°C on Wed morning, min -1°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary A moderate fall of snow, heaviest on Fri night. Temperatures will be below freezing (max 0°C on Fri morning, min -5°C on Sun afternoon). Mainly fresh winds.
		Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	some clouds	light snow	light snow	mod. snow	some clouds	cloudy	light snow	light snow	some clouds	clear
km/h	S	ESE	E	ENE	E	SE	SW	SW	SW	SW	WSW	SSW	WSW	SSW	NE	ESE	WSW	WSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	1	3	7	—	—	3	1	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	0	2	2	1	3	3	2	1	1	-1	0	0	-3	-3	-2	-3	-4	-4	-5
min °C	-1	2	1	1	2	2	1	1	0	-1	0	-1	-4	-3	-3	-3	-4	-5	-5
chill °C	-5	-1	-2	-2	0	2	-2	-2	-4	-6	-6	-6	-10	-3	-6	-6	-4	-9	-9

Freezing level m	1050	1550	1550	1550	1600	1800	1950	1450	1350	1150	1200	1200	750	800	1000	750	650	700	0
Cloud base (m)	800		1700	400	9200	8550	6800	3200	2700	1850	650	400	400	400	600	400	400	400	450

	—	7:20	—	—	7:18	—	—	7:16	—	—	7:15	—	—	7:13	—	—	7:11	—	—
	—	—	5:22	—	—	5:23	—	—	5:24	—	—	5:27	—	—	5:29	—	—	5:30	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 3°C on Wed morning, min -1°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Fri night. Temperatures will be below freezing (max 0°C on Fri morning, min -5°C on Sun afternoon). Mainly fresh winds.

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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the S (7 kph at 180).	16 km Low: overcast
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Moderate rain .	Calm (0 kph at 0).	16 km Low: few
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and partly cloudy.	Light winds from the SE (11 kph at 140).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the SE (11 kph at 140).	16 km Low: overcast
SHIP3336 54 km W 15m alt. 3 hours ago			Light winds from the SE (8 kph at 130).	- km
SHIP4785 54 km W 15m alt. 2 hours ago			Light winds from the SE (8 kph at 140).	- km
SHIP2695 54 km W 15m alt. 2 hours ago			Light winds from the SSE (10 kph at 150).	- km
SHIP7408 54 km W 15m alt. 3 hours ago			Light winds from the SSE (10 kph at 150).	- km
SHIP3913 54 km W 3m alt. 2 hours ago	9° C		Light winds from the SE (8 kph at 140).
SHIP2235 54 km W 3m alt. 3 hours ago	9° C		Light winds from the SE (8 kph at 130).

* 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.