– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sat 04 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sat 04 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 18°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 12°C on Thu afternoon, min 2°C on Tue morning). Wind will be generally light.
	Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8			Thursday 9
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	cloudy	cloudy	some clouds	clear	some clouds	rain shwrs	rain shwrs	clear	some clouds	rain shwrs	some clouds	clear	clear	clear	clear
km/h	NW	NW	E	ESE	ESE	SE	SW	WSW	WSW	W	WNW	W	NNW	NW	E	WNW	WNW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.2	0.1	—	—	0.1	—	—	—	—	—
max °C	12	15	10	16	18	15	16	17	11	4	8	6	4	8	6	9	12	9
min °C	7	14	10	11	18	12	13	17	2	2	7	3	3	6	4	6	12	5
chill °C	7	14	10	11	18	12	13	17	-1	0	6	3	3	5	4	6	12	5

Freezing level m	2550	2800	3050	3100	3100	3050	2850	2700	1250	900	1450	1100	1050	1400	1700	1900	2150	2000
Cloud base (m)		6850	5650	6550	6600	5400	5850	1900	500	500	800	600	600	750			8000	1700

	6:39	—	—	6:37	—	—	6:35	—	—	6:33	—	—	6:31	—	—	6:30	—	—
	—	7:39	—	—	7:40	—	—	7:43	—	—	7:44	—	—	7:45	—	—	7:46	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 18°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 12°C on Thu afternoon, min 2°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. 24 minutes ago	17° C	Dry	Calm (0 kph at 74).
Renton 30 km WSW 160m alt. 50 minutes ago	14° C	Dry	Wind obs. (6 kph from 290 degs) was rejected.
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Clear	Light winds from the NNW (15 kph at 330).	16 km
Auburn 39 km SW 119m alt. 58 minutes ago	20° C	Dry	Calm (2 kph at 269).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	Clear	Light winds from the NW (11 kph at 320).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13° C	Dry and partly cloudy.	Light winds from the N (15 kph at 0).	16 km Low: scattered
Snohomish 49 km NW 196m alt. 2 hours ago	14° C	Dry	Calm (3 kph at 313).
Seattle 49 km WSW 100m alt. 51 minutes ago		-	Wind obs. (18 kph from 147 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.