– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 pm Tue 10 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 38mm) on Wed night. Becoming colder with heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 8°C on Wed night, min 0°C on Thu night). Winds decreasing (strong winds from the SW on Wed night, calm by Fri morning).										Days 5–7 Weather Summary A dusting of snow giving way to moderate rain (total 13mm) heaviest on Mon morning. Freeze-thaw conditions (max 11°C on Mon afternoon, min -3°C on Fri night). Wind will be generally light.
		Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15			Monday 16
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	light snow	heavy rain	light snow	light snow	light snow	mod. snow	mod. snow	light snow	light snow	some clouds	some clouds	some clouds	light rain	light rain	light rain	mod. rain	light rain	mod. rain
km/h	WSW	S	SW	WSW	WSW	SW	SW	WSW	W	NW	NNW	NW	E	SSW	SW	SSW	SSW	SW	S
See all weather maps
cm	2	1	—	1	1	3	8	6	2	1	—	—	—	—	—	—	—	—	—
mm	3	5	12	18	—	—	—	—	—	—	—	—	—	0.7	5	1.7	5	0.5	5
max °C	2	3	7	8	2	2	1	1	1	0	-1	1	-1	3	3	6	6	11	8
min °C	1	2	5	1	1	1	0	0	1	-3	-3	0	-3	0	2	4	6	8	7
chill °C	-3	0	0	-5	-5	-4	-3	0	-1	-5	-5	-2	-3	0	-1	1	3	6	5

Freezing level m	750	1050	1800	850	750	700	550	650	750	300	350	600	0	1250	1550	2700	3100	3050	3150
Cloud base (m)	450	400	400	450	450	450	400	400	400	450	500	450	650	2150	500	700	450	500	2300

	—	7:28	—	—	7:26	—	—	7:24	—	—	7:22	—	—	7:20	—	—	7:18	—	—
	—	—	7:06	—	—	7:07	—	—	7:08	—	—	7:09	—	—	7:12	—	—	7:13	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 38mm) on Wed night. Becoming colder with heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 8°C on Wed night, min 0°C on Thu night). Winds decreasing (strong winds from the SW on Wed night, calm by Fri morning).

Mount Si Weather (Days 3-6):

A dusting of snow giving way to moderate rain (total 13mm) heaviest on Mon morning. Freeze-thaw conditions (max 11°C on Mon afternoon, min -3°C on Fri night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 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. 1 hour ago	4° C	Dry	Calm (0 kph at 66).
Snoqualmie Pass 30 km ESE 824m alt. 46 minutes ago	0° C	-	Calm (0 kph at 359).
Grotto wx 35 km NE 321m alt. 1 hour ago	0° C	-	Calm (2 kph at 278).
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Dry and partly cloudy.	Light winds from the S (17 kph at 180).	16 km Low: scattered Mid: broken High: broken
Grotto wx 39 km NE 1101m alt. 1 hour ago	-3° C	-	Calm (0 kph at 159).
Auburn 39 km SW 119m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 338).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-3° C	Light snow.	Light winds from the N (6 kph at 1).	1 km
SHIP10707 43 km W 15m alt. 3 hours ago				- km
SHIP8498 43 km W 3m alt. 3 hours ago
Woodinville 43 km WNW 137.2m alt. 2 hours ago	-4° C	-	Calm (0 kph at 287).

* 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.