– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 am Fri 02 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 am Fri 02 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 23°C on Sun afternoon, min 13°C on Fri morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 19°C on Mon afternoon, min 11°C on Tue night). Wind will be generally light.
	Friday 2			Saturday 3			Sunday 4			Monday 5			Tuesday 6			Wednesday 7
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)	8950	1700		7500	9350		9600			8700	7200	9150			9200	8500	8600	9000
km/h	WSW	WNW	E	E	N	ESE	S	W	SSE	W	WNW	ENE	NW	NW	NNE	NNW	NW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	17	18	14	19	21	16	21	23	17	18	19	14	16	18	13	15	18	14
min °C	13	18	13	14	21	15	15	22	15	14	19	12	12	17	11	11	17	13
chill °C	13	18	13	14	21	15	15	22	15	14	19	12	12	17	11	11	17	13

Freezing level m	3400	3750	4100	4200	4250	4250	4150	4150	4150	3950	3800	3950	4000	4000	3950	3950	4100	4200

	7:05	—	—	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—	7:13	—	—
	—	6:45	—	—	6:43	—	—	6:40	—	—	6:38	—	—	6:37	—	—	6:35	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Sun afternoon, min 13°C on Fri morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Mon afternoon, min 11°C on Tue 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
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Wind obs. (19 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	19°C	Dry and cloudy.	Light winds from the S (6 kph at 170).	16 km Low: few Mid: scattered High: overcast
Auburn 39 km SW 119m alt. 46 minutes ago	24°C	Dry	Calm (0 kph at 181).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	15°C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Monroe 44 km NW 80m alt. 2 hours ago	14°C	Dry	Calm (0 kph at 70).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	19°C	Dry and partly cloudy.	Light winds from the SSW (15 kph at 210).	16 km Low: scattered Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	18°C	Dry and partly cloudy.	Light winds from the SSW (17 kph at 200).	16 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	16°C	Dry	Calm (0 kph at 254).
Seattle 49 km WSW 100m alt. 49 minutes ago		-	Wind obs. (8 kph from 133 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.