– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 am Fri 06 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 am Fri 06 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 28mm), heaviest during Sat night. Very mild (max 15°C on Sat morning, min 4°C on Sun night). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night).									Days 4–6 Weather Summary Light rain (total 8mm), mostly falling on Mon night. Very mild (max 16°C on Wed morning, min 7°C on Mon afternoon). Wind will be generally light.
	Friday 6			Saturday 7			Sunday 8			Monday 9			Tuesday 10			Wednesday 11
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	mod. rain	rain shwrs	cloudy	some clouds	rain shwrs	light rain	rain shwrs	some clouds	some clouds	clear	light rain	light rain	cloudy	some clouds	some clouds	some clouds	some clouds
Cloud base (m)	750	750	700	2700	6900	600	650	600	800	5950	2200	1800	650	600	6100	5700	7000	7900
km/h	S	SSW	SSW	SE	SSE	SSW	SW	SW	ESE	SSE	SSW	SSE	S	S	SE	SE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.7	6	0.7	—	—	16	4	1.7	—	—	—	3	4	—	—	—	—	—
max °C	10	11	10	15	13	12	8	7	6	10	9	9	9	11	11	16	14	12
min °C	9	10	9	13	12	7	8	6	4	8	7	7	9	11	11	13	12	10
chill °C	7	8	9	12	10	3	4	4	3	8	6	6	8	10	10	12	11	9

Freezing level m	2700	2950	2500	2950	2850	1400	1500	1550	1450	2050	1900	2250	2600	2850	3350	3450	3550	3450

	6:58	—	—	7:00	—	—	7:01	—	—	7:03	—	—	7:03	—	—	7:05	—	—
	—	4:42	—	—	4:39	—	—	4:38	—	—	4:37	—	—	4:36	—	—	4:35	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Sat night. Very mild (max 15°C on Sat morning, min 4°C on Sun night). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night).

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Mon night. Very mild (max 16°C on Wed morning, min 7°C on Mon afternoon). 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 30 km WSW 160m alt. 1 hour ago	11°C	Dry	Calm (3 kph at 86).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 65).
Renton Airport 36 km WSW 218m alt. 3 hours ago	10°C	Light rain .	Wind obs. (11 kph from 170 degs) was rejected.	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	14°C	Dry	Calm (2 kph at 69).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2°C	Light rain .	Calm (0 kph at 0).	0 km Mid: few High: broken
Monroe 44 km NW 80m alt. 1 hour ago	7°C	Dry	Calm (0 kph at 311).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	10°C	Light rain .	Light winds from the SE (11 kph at 140).	10 km Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	9°C	Light rain .	Light winds from the S (11 kph at 190).	10 km Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 55 minutes ago	10°C	Dry	Light winds from the ESE (6 kph at 119).

* 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.