– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 am Tue 10 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 am Tue 10 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 29mm), heaviest during Tue afternoon. Very mild (max 17°C on Wed morning, min 9°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 42mm), heaviest during Sun morning. Very mild (max 15°C on Fri morning, min 6°C on Sun night). Winds decreasing (fresh winds from the SE on Fri morning, calm by Sat morning).
	Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	heavy rain	heavy rain	rain shwrs	some clouds	some clouds	some clouds	cloudy	some clouds	cloudy	cloudy	cloudy	light rain	light rain	rain shwrs	rain shwrs	heavy rain	mod. rain	mod. rain
Cloud base (m)	650	400	2700	3150	6850	6400	4850	3400	6100	5150		1700	400	500	1750	750	400	450
km/h	S	SSE	SSE	SSE	SSE	SSE	SE	ESE	SE	SE	SE	ENE	SSE	S	ESE	SE	SE	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	11	16	1.4	—	—	—	—	—	—	—	—	5	1.6	0.6	2	16	7	10
max °C	10	11	12	17	15	12	16	14	13	15	14	9	10	9	8	8	9	8
min °C	9	10	11	14	13	11	13	13	12	13	12	8	9	8	7	8	8	6
chill °C	8	8	10	14	12	10	13	12	10	11	10	8	9	8	4	5	5	5

Freezing level m	2700	2650	2950	3050	3100	3050	2700	2800	3000	2800	2600	2100	1950	1800	1900	2200	2100	1700

	7:03	—	—	7:05	—	—	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—
	—	4:36	—	—	4:35	—	—	4:34	—	—	4:31	—	—	4:30	—	—	4:30	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 29mm), heaviest during Tue afternoon. Very mild (max 17°C on Wed morning, min 9°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 42mm), heaviest during Sun morning. Very mild (max 15°C on Fri morning, min 6°C on Sun night). Winds decreasing (fresh winds from the SE on Fri morning, calm by Sat morning).

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 (0 kph at 134).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11°C	Light rain .	Wind obs. (11 kph from 170 degs) was rejected.	11 km Low: few Mid: scattered High: overcast
Auburn 39 km SW 119m alt. 37 minutes ago	13°C	Dry	Calm (2 kph at 74).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Moderate rain .	Calm (0 kph at 0).	2 km Mid: overcast
Monroe 44 km NW 80m alt. 38 minutes ago	17°C	Dry	Calm (0 kph at 103).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	11°C	Light rain .	Light winds from the SSE (11 kph at 150).	11 km Low: few Mid: scattered High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11°C	Light rain .	Moderate winds from the SE (22 kph at 140).	8 km Mid: few High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 45 minutes ago	9°C	Dry	Wind obs. (6 kph from 25 degs) was rejected.
Seattle 49 km WSW 100m alt. 1 hour ago	21°C	-	Light winds from the S (8 kph at 171).

* 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.