– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 am Fri 23 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 am Fri 23 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Fri morning. Very mild (max 14°C on Sun afternoon, min 5°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 26mm), heaviest during Wed afternoon. Very mild (max 13°C on Mon morning, min 4°C on Wed night). Wind will be generally light.
	Friday 23			Saturday 24			Sunday 25			Monday 26			Tuesday 27			Wednesday 28
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	light rain	rain shwrs	rain shwrs	light rain	rain shwrs	light rain
Cloud base (m)	500	700	5850	5300			6300	5550	5800	5350			500	450	500	650	400	400
km/h	WNW	NW	E	SSW	W	ESE	ESE	ENE	E	NE	WNW	E	SW	SSW	SSW	S	S	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1	0.4	—	—	—	—	—	—	—	—	—	—	0.1	1.1	1.7	4	16	4
max °C	6	8	6	10	13	10	12	14	10	13	13	8	7	7	6	6	6	5
min °C	6	8	5	6	11	8	7	12	9	8	12	6	6	7	5	6	5	4
chill °C	5	8	5	6	11	7	6	12	8	8	12	6	4	5	2	4	3	1

Freezing level m	1350	1600	2500	2600	2700	2650	2550	2550	2700	2750	2600	2200	1550	1450	1450	1300	1550	1250

	7:35	—	—	7:37	—	—	7:39	—	—	7:41	—	—	7:41	—	—	7:43	—	—
	—	6:05	—	—	6:02	—	—	6:00	—	—	5:59	—	—	5:58	—	—	5:55	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Fri morning. Very mild (max 14°C on Sun afternoon, min 5°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 26mm), heaviest during Wed afternoon. Very mild (max 13°C on Mon morning, min 4°C on Wed 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
Renton Airport 36 km WSW 218m alt. 2 hours ago	14°C	Dry and partly cloudy.	Light winds from the NNW (6 kph at 330).	16 km Low: scattered
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (3 kph at 209).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4°C	Dry and partly cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: broken Mid: broken
Monroe 44 km NW 80m alt. 2 hours ago	7°C	Dry	Calm (0 kph at 305).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	14°C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: scattered Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13°C	Dry and partly cloudy.	Light winds from the S (6 kph at 180).	16 km Low: scattered Mid: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 59 minutes ago	16°C	Dry	Wind obs. (8 kph from 296 degs) was rejected.
Seattle 49 km WSW 100m alt. 29 minutes ago		-	Calm (2 kph at 55).
SHIP2818 54 km W 15m alt. 3 hours ago				- km

* 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.