– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Wed 15 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Wed 15 Apr 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 Wed night. Freeze-thaw conditions (max 6°C on Sat morning, min -5°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 15°C on Mon night, min 7°C on Sat afternoon). Wind will be generally light.
	Wed 15		Thursday 16			Friday 17			Saturday 18			Sunday 19			Monday 20
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	heavy snow	light snow	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	clear	some clouds	clear	clear
km/h	WSW	NNW	NW	W	SW	ESE	SE	SE	SE	SE	ESE	ESE	ENE	N	ESE	NW	ESE
See all weather maps
cm	5	14	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	-4	-4	-4	0	-1	-2	1	4	6	8	9	10	11	11	13	14	15
min °C	-4	-5	-4	-3	-3	-3	-1	1	5	7	8	10	10	10	12	14	14
chill °C	-8	-12	-10	-7	-9	-3	-1	-1	3	5	6	8	9	10	12	14	14

Freezing level m	750	600	700	1200	600	1000	1400	2150	2400	2550	2750	2750	2750	3100	3200	3150	3350
Cloud base (m)	400	450	450	600	650	450	700	6150		6000	4800	3450	5850	4950			4900

	—	—	6:16	—	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—
	7:55	—	—	7:57	—	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 6°C on Sat morning, min -5°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 15°C on Mon night, min 7°C on Sat afternoon). 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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 56 minutes ago	8° C	Dry	Calm (0 kph at 335).
Snoqualmie Pass 30 km ESE 824m alt. 53 minutes ago	1° C	-	Calm (0 kph at 359).
Renton 30 km WSW 160m alt. 54 minutes ago	3° C	Light rain.	Calm (0 kph at 49).
Grotto wx 35 km NE 321m alt. 2 hours ago	4° C	Dry	Calm (0 kph at 279).
Renton Airport 36 km WSW 218m alt. 2 hours ago	4° C	Light rain .	Light winds from the N (11 kph at 1).	10 km Mid: broken High: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	-2° C	-	Calm (0 kph at 140).
Auburn 39 km SW 119m alt. 43 minutes ago	19° C	Dry	Calm (0 kph at 287).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Light snow.	Calm (0 kph at 0).	1 km
Woodinville 43 km WNW 137.2m alt. 55 minutes ago	2° C	-	Wind obs. (11 kph from 290 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	6° C	Light rain .	Light winds from the ENE (9 kph at 60).	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.