– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 pm Fri 06 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 pm Fri 06 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 33mm), heaviest during Sat night. Very mild (max 15°C on Sat morning, min 4°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun night).											Days 5–7 Weather Summary Light rain (total 7mm), mostly falling on Tue morning. Very mild (max 17°C on Wed morning, min 7°C on Mon afternoon). Wind will be generally light.
	Fri 6		Saturday 7			Sunday 8			Monday 9			Tuesday 10			Wednesday 11
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	rain shwrs	some clouds	cloudy	heavy rain	light rain	rain shwrs	rain shwrs	cloudy	cloudy	light rain	light rain	light rain	light rain	some clouds	some clouds	some clouds
Cloud base (m)	650	500	2900	6850	600	700	600	850	5700	2000	800	600	500	3250	5900	6750	7700
km/h	SSW	S	SE	SSE	SW	SW	SW	E	SE	WSW	SSE	S	SSE	SSE	SE	SE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	8	0.9	—	—	20	2	1.6	0.1	—	—	1.8	4	0.9	0.1	—	—	—
max °C	11	10	15	14	12	8	7	6	10	9	9	10	11	12	17	15	13
min °C	11	9	13	13	7	7	6	4	8	7	7	9	11	11	15	13	12
chill °C	9	8	12	12	3	3	5	3	7	6	6	7	10	10	15	12	11

Freezing level m	2950	2600	2900	2850	1650	1450	1550	1500	2000	1800	2250	2750	2850	3250	3300	3500	3550

	—	—	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 33mm), heaviest during Sat night. Very mild (max 15°C on Sat morning, min 4°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun night).

Mount Si Weather (Days 3-6):

Light rain (total 7mm), mostly falling on Tue morning. Very mild (max 17°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. 2 hours ago	12°C	Dry	Calm (0 kph at 186).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 1 hour ago	12°C	Light rain .	Wind obs. (11 kph from 160 degs) was rejected.	16 km Low: overcast
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6°C	Moderate rain .	Calm (0 kph at 0).	0 km
Monroe 44 km NW 80m alt. 2 hours ago	7°C	Dry	Calm (0 kph at 215).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13°C	Light rain .	Light winds from the S (19 kph at 190).	16 km Low: few Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11°C	Light rain .	Light winds from the SSW (19 kph at 210).	10 km Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	13°C	Dry	Light winds from the SSE (10 kph at 165).
Seattle 49 km WSW 100m alt. 1 hour ago		-	Calm (3 kph at 330).

* 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.