– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 03 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 03 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 18°C on Sun afternoon, min 5°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Mon afternoon. Very mild (max 17°C on Mon afternoon, min 1°C on Tue morning). Wind will be generally light.
	Fri 3		Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	clear	some clouds	some clouds	cloudy	some clouds	clear	rain shwrs	rain shwrs	rain shwrs	clear	rain shwrs	clear	clear	clear
km/h	W	E	NNW	NNW	E	ESE	ESE	SE	SW	WSW	WSW	W	NW	NNW	NW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	0.8	0.4	0.1	—	0.2	—	—	—
max °C	10	8	11	14	10	16	18	14	16	17	10	3	7	5	6	9	6
min °C	10	5	6	13	9	11	18	11	12	16	2	1	5	2	3	9	4
chill °C	10	5	6	13	9	11	18	11	12	16	-2	-2	4	2	3	8	4

Freezing level m	1700	1900	2400	2750	3050	3100	3100	3000	2750	2600	1350	850	1300	900	1200	1550	1550
Cloud base (m)	1800	1000	7050	6900	5800	6450	6750	5650	5700	1800	650	500	550	750	700	900	950

	—	—	6:39	—	—	6:37	—	—	6:35	—	—	6:33	—	—	6:31	—	—
	7:38	—	—	7:39	—	—	7:40	—	—	7:43	—	—	7:44	—	—	7:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 18°C on Sun afternoon, min 5°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Mon afternoon. Very mild (max 17°C on Mon afternoon, min 1°C on Tue morning). 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. 48 minutes ago	12° C	Dry	Calm (0 kph at 349).
Renton 30 km WSW 160m alt. 41 minutes ago	13° C	Dry	Calm (2 kph at 306).
Black Diamond 32 km SSW 192m alt. 59 minutes ago		-	Light winds from the W (6 kph at 265).
Renton Airport 36 km WSW 218m alt. 3 hours ago	15° C	Dry and cloudy.	Light winds from the SSE (7 kph at 160).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	13° C	Dry	Wind obs. (6 kph from 57 degs) was rejected.
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	15° C	Dry and partly cloudy.	Light winds from the N (7 kph at 1).	16 km Low: few Mid: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	14° C	-	Light winds from the SW (9 kph at 230).	16 km Low: few Mid: few High: scattered
Snohomish 49 km NW 196m alt. 2 hours ago	12° C	Dry	Calm (3 kph at 207).
Seattle 49 km WSW 100m alt. 3 hours ago		-	Wind obs. (11 kph from 150 degs) was rejected.

* 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.