– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Tue 17 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 17 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 88mm), heaviest during Fri afternoon. Very mild (max 11°C on Wed morning, min 9°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 4mm), mostly falling on Fri night. Freeze-thaw conditions (max 9°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light.
		Wednesday 18			Thursday 19			Friday 20			Saturday 21			Sunday 22			Monday 23
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	heavy rain	mod. rain	light rain	mod. rain	mod. rain	light rain	heavy rain	heavy rain	heavy rain	light rain	cloudy	rain shwrs	some clouds	light rain	rain shwrs	rain shwrs	cloudy	some clouds	light rain
km/h	SSW	SSW	S	SSW	SSW	SW	SSW	WSW	SW	WSW	NNW	WNW	S	SW	WSW	ENE	NNW	WNW	SSE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	13	9	4	8	6	4	10	15	18	3	—	0.6	—	0.1	0.2	0.1	—	—	0.1
max °C	10	11	11	10	10	10	11	11	10	8	1	3	2	3	5	2	6	9	6
min °C	9	11	10	9	9	10	10	11	9	1	0	3	-1	1	5	1	3	8	5
chill °C	8	9	8	7	6	8	9	9	6	-2	-3	1	-3	0	4	1	3	8	3

Freezing level m	2750	2750	2800	2600	2550	2700	2850	2650	2200	850	650	900	550	850	1100	1000	1850	1950	1700
Cloud base (m)	400	450	550	700	450	450	400	400	400	450	450	550	700	600	600	550	400	4500	2250

	—	7:13	—	—	7:11	—	—	7:09	—	—	7:07	—	—	7:05	—	—	7:03	—	—
	—	—	7:15	—	—	7:16	—	—	7:19	—	—	7:20	—	—	7:22	—	—	7:22	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 88mm), heaviest during Fri afternoon. Very mild (max 11°C on Wed morning, min 9°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Fri night. Freeze-thaw conditions (max 9°C on Mon 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 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	12° C	Dry	Calm (0 kph at 18).
Snoqualmie Pass 30 km ESE 824m alt. 38 minutes ago	2° C	-	Calm (0 kph at 88).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 34 minutes ago	4° C	Light rain.	Calm (0 kph at 47).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Light rain .	Light winds from the SE (6 kph at 130).	5 km Mid: broken High: overcast
Grotto wx 39 km NE 1101m alt. 46 minutes ago	3° C	Dry	Calm (0 kph at 314).
Auburn 39 km SW 119m alt. 2 hours ago	12° C	Dry	Calm (0 kph at 60).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	6° C	Light rain .	Calm (0 kph at 0).	1 km
Woodinville 43 km WNW 137.2m alt. 44 minutes ago	4° C	Dry	Calm (0 kph at 327).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Light rain .	Light winds from the SSE (7 kph at 150).	3 km 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.