– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Tue 25 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Tue 25 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A heavy fall of snow, heaviest during Tue afternoon. Becoming milder with light rain (total 8mm) on Thu morning. Freeze-thaw conditions (max 6°C on Wed night, min 0°C on Tue afternoon). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Temperatures will be slightly above freezing (max 4°C on Fri afternoon, min 1°C on Sat night). Wind will be generally light.
	Tue 25		Wednesday 26			Thursday 27			Friday 28			Saturday 29			Sunday 30
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. snow	light snow	some clouds	some clouds	light rain	light rain	light snow	mod. snow	some clouds	rain shwrs	cloudy	some clouds	some clouds	some clouds	some clouds	cloudy	cloudy
km/h	S	SW	SSW	SSE	SSE	S	S	W	ESE	SW	WSW	NNW	NNW	NW	NW	NW	NNW
See all weather maps
cm	6	5	—	—	—	—	5	6	—	—	—	—	—	—	—	—	—
mm	—	0.6	—	—	3	5	—	—	—	0.1	—	—	—	—	—	—	—
max°C	0	2	3	5	6	4	2	2	3	4	3	4	2	2	2	2	3
min°C	0	0	3	4	3	3	2	1	2	3	3	3	2	1	1	1	1
chill°C	-5	-5	0	2	-1	-2	-3	-1	2	3	3	1	0	-1	-1	-2	-2

Freezing level (m)	1250	1650	1900	2300	2350	1950	1650	1550	1600	1850	2150	2050	1750	1750	1550	1750	3550
Cloud base (m)	700	450	700	950	950	650	600	450	450	650	5250	4400	3550		2400	2150	950

	—	—	7:26	—	—	7:28	—	—	7:30	—	—	7:31	—	—	7:31	—	—
	4:21	—	—	4:20	—	—	4:20	—	—	4:19	—	—	4:17	—	—	4:17	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A heavy fall of snow, heaviest during Tue afternoon. Becoming milder with light rain (total 8mm) on Thu morning. Freeze-thaw conditions (max 6°C on Wed night, min 0°C on Tue afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Temperatures will be slightly above freezing (max 4°C on Fri afternoon, min 1°C on Sat night). Wind will be generally light.

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 Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 56 minutes ago	4° C	Dry	Calm (0 kph at 234).
Black Diamond 32 km SSW 192m alt. 46 minutes ago	16° C	Dry	Calm (5 kph at 258).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the S (6 kph at 170).	16 km Low: overcast
Auburn 39 km SW 119m alt. 2 hours ago	8° C	Dry	Calm (0 kph at 36).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Moderate snow.	Wind obs. (6 kph from 1 degs) was rejected.	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	6° C	Light rain .	Light winds from the E (11 kph at 100).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 36 minutes ago	4° C	Dry	Calm (3 kph at 79).
Seattle 49 km WSW 100m alt. 1 hour ago		-
SHIP457 54 km W -m alt. 3 hours ago	7° C	-	Light winds from the ESE (9 kph at 120).

* 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.