– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 am Wed 11 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 am Wed 11 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 12mm), heaviest on Fri night. Very mild (max 17°C on Wed morning, min 8°C on Fri night). Winds decreasing (fresh winds from the SE on Thu night, calm by Fri night).									Days 4–6 Weather Summary Heavy rain (total 36mm), heaviest during Sat night. Very mild (max 10°C on Sat morning, min 4°C on Mon night). Wind will be generally light.
	Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15			Monday 16
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	cloudy	cloudy	cloudy	cloudy	light rain	rain shwrs	rain shwrs	light rain	heavy rain	mod. rain	light rain	rain shwrs	rain shwrs	rain shwrs	some clouds
Cloud base (m)	6600	6750	6200	6400	5800	6300	5150	2000	350	650	600	850	450	400	400	850	2350	750
km/h	SSE	SSE	SE	SE	ESE	SE	SE	ESE	ESE	S	SSE	ESE	SSE	SSE	SSW	SW	WSW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	1.1	11	1.5	0.6	17	7	4	3	1.1	0.5	—
max °C	17	15	12	16	15	13	15	11	8	10	9	8	8	8	7	8	7	5
min °C	14	12	11	13	13	13	14	9	8	8	9	7	8	7	6	7	5	4
chill °C	14	12	11	13	12	11	12	9	8	7	8	4	6	6	5	6	5	4

Freezing level m	3100	2950	3100	2850	3000	3100	2800	2350	1750	1700	1700	2100	2100	1800	1500	1400	1450	1350

	7:05	—	—	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—	7:13	—	—
	—	4:35	—	—	4:34	—	—	4:31	—	—	4:30	—	—	4:30	—	—	4:29	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 12mm), heaviest on Fri night. Very mild (max 17°C on Wed morning, min 8°C on Fri night). Winds decreasing (fresh winds from the SE on Thu night, calm by Fri night).

Mount Si Weather (Days 3-6):

Heavy rain (total 36mm), heaviest during Sat night. Very mild (max 10°C on Sat morning, min 4°C on Mon 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 716m alt. 3 hours ago	11°C	Clear	Light winds from the N (9 kph at 1).	16 km
Auburn 39 km SW 119m alt. 2 hours ago	-1°C	-	Calm (0 kph at 309).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	5°C	Fog -.	Light winds from the N (6 kph at 1).	0 km
SHIP10624 43 km W 15m alt. 4 hours ago			Light winds from the S (8 kph at 180).	- km
Monroe 44 km NW 80m alt. 2 hours ago	16°C	Dry	Calm (0 kph at 84).
SHIP9250 43 km W 3m alt. 4 hours ago	12°C		Light winds from the S (8 kph at 180).
SHIP3421 43 km W 15m alt. 4 hours ago			Calm (6 kph at 200).	- km
SHIP2121 43 km W 3m alt. 4 hours ago	12°C		Light winds from the S (8 kph at 180).
SHIP8308 43 km W 3m alt. 4 hours ago	12°C		Light winds from the SSW (8 kph at 200).
SHIP4250 43 km W 15m alt. 4 hours ago			Light winds from the S (8 kph at 180).	- 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.