– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sat 14 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sat 14 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A light covering of new snow mostly falling on Sun night. Becoming milder with moderate rain (total 12mm) heaviest on Mon morning. Freeze-thaw conditions (max 6°C on Mon afternoon, min -7°C on Sat morning). Winds increasing (calm on Sun morning, strong winds from the SW by Mon night).									Days 4–6 Weather Summary Heavy rain (total 55mm), heaviest during Wed night. Mild temperatures (max 7°C on Wed night, min 4°C on Tue morning). Mainly gales.
	Saturday 14			Sunday 15			Monday 16			Tuesday 17			Wednesday 18			Thursday 19
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	snow shwrs	some clouds	some clouds	light snow	light snow	mod. rain	light rain	cloudy	light rain	mod. rain	heavy rain	light rain	light rain	heavy rain	mod. rain	light rain	light rain
km/h	N	WSW	NNE	SSW	SW	SW	SW	WSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
See all weather maps
cm	1	2	—	—	1	2	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	1.7	7	3	—	3	7	16	2	0.9	15	6	1.7	4
max °C	-6	-5	-4	-1	-1	3	3	6	6	4	5	6	4	5	7	7	5	7
min °C	-7	-6	-6	-3	-2	1	3	4	5	4	5	5	4	4	6	7	5	6
chill °C	-13	-10	-6	-3	-7	-5	-4	-2	-1	-2	0	0	-2	-2	1	2	0	0

Freezing level m	400	600	0	1050	1000	2300	3100	3000	2400	2550	2600	2600	2350	2650	2700	2800	3100	2750
Cloud base (m)	600	450	600	2400	700	800	450	450		700	450	600	600	600	400	500	850	800

	7:22	—	—	7:20	—	—	7:18	—	—	7:16	—	—	7:13	—	—	7:11	—	—
	—	7:09	—	—	7:12	—	—	7:13	—	—	7:14	—	—	7:15	—	—	7:16	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A light covering of new snow mostly falling on Sun night. Becoming milder with moderate rain (total 12mm) heaviest on Mon morning. Freeze-thaw conditions (max 6°C on Mon afternoon, min -7°C on Sat morning). Winds increasing (calm on Sun morning, strong winds from the SW by Mon night).

Mount Si Weather (Days 3-6):

Heavy rain (total 55mm), heaviest during Wed night. Mild temperatures (max 7°C on Wed night, min 4°C on Tue morning). Mainly gales.

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
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 340).
Snoqualmie Pass 30 km ESE 824m alt. 25 minutes ago	1° C	-	Calm (0 kph at 358).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (5 kph at 67).
Grotto wx 35 km NE 321m alt. 2 hours ago	1° C	-	Calm (3 kph at 255).
Renton Airport 36 km WSW 218m alt. 56 minutes ago	2° C	Dry and cloudy.	Light winds from the ESE (6 kph at 120).	11 km Low: scattered Mid: overcast
Grotto wx 39 km NE 1101m alt. 2 hours ago	-2° C	-	Calm (0 kph at 149).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (2 kph at 246).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-4° C	Light snow.	Light winds from the N (9 kph at 1).	5 km
Woodinville 43 km WNW 137.2m alt. 51 minutes ago	1° C	-	Wind obs. (10 kph from 298 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	3° C	Dry and cloudy.	Light winds from the ENE (6 kph at 70).	16 km Low: scattered Mid: overcast

* 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.