– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 am Sun 08 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 am Sun 08 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 Mon afternoon. Very mild (max 11°C on Mon morning, min 6°C on Sun afternoon). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 6mm), mostly falling on Fri night. Very mild (max 17°C on Wed morning, min 9°C on Fri night). Wind will be generally light.
	Sunday 8			Monday 9			Tuesday 10			Wednesday 11			Thursday 12			Friday 13
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	cloudy	cloudy	light rain	heavy rain	rain shwrs	light rain	mod. rain	rain shwrs	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	light rain	light rain
Cloud base (m)	650	750	6100	2050	1500	450	750	450	2800		7050	6500		6000	5550	1800	900	450
km/h	SW	SW	ESE	SE	SE	SSW	SSE	SSE	SSE	SE	SE	ESE	SSE	SSW	S	SSW	SW	SSE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	—	—	0.1	11	2	4	5	4	—	—	—	—	—	—	0.1	0.9	5
max °C	8	8	7	11	8	8	9	9	11	17	14	12	15	12	11	12	11	10
min °C	7	6	6	8	7	7	8	9	10	13	12	11	14	11	10	11	11	9
chill °C	3	6	6	6	4	4	6	8	9	13	11	11	14	10	9	9	9	7

Freezing level m	1450	1550	2000	1700	2200	1950	2300	2850	3050	3200	3250	3400	3100	2600	2650	2400	2300	2300

	7:01	—	—	7:03	—	—	7:03	—	—	7:05	—	—	7:07	—	—	7:09	—	—
	—	4:38	—	—	4:37	—	—	4:36	—	—	4:35	—	—	4:34	—	—	4:31	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 29mm), heaviest during Mon afternoon. Very mild (max 11°C on Mon morning, min 6°C on Sun afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 6mm), mostly falling on Fri night. Very mild (max 17°C on Wed morning, min 9°C on Fri 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
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	11°C	Dry	Calm (0 kph at 20).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12°C	Dry and partly cloudy.	Light winds from the SSE (15 kph at 150).	16 km Low: scattered Mid: broken High: broken
Auburn 39 km SW 119m alt. 45 minutes ago	7°C	Dry	Calm (2 kph at 156).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Light rain .	Light winds from the W.(Wind varies from 130 to 350 degs) (13 kph at 280).	16 km Low: broken Mid: overcast
SHIP1058 43 km W -m alt. 3 hours ago	12°C	-	Light winds from the S (7 kph at 170).
SHIP3127 43 km W 15m alt. 1 hour ago			Light winds from the S (8 kph at 190).	- km
SHIP4386 43 km W 15m alt. 3 hours ago			Calm (6 kph at 180).	- km
SHIP3476 43 km W 15m alt. 2 hours ago			Light winds from the S (8 kph at 180).	- km
SHIP4642 43 km W 3m alt. 3 hours ago	12°C		Calm (5 kph at 180).
SHIP2139 43 km W 3m alt. 3 hours ago	12°C		Calm (5 kph at 180).

* 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.