– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 am Sun 08 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 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 36mm), heaviest during Tue afternoon. Very mild (max 12°C on Mon morning, min 6°C on Sun night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 34mm), heaviest during Fri night. Very mild (max 17°C on Wed morning, min 7°C on Fri night). Winds increasing (calm on Thu afternoon, strong winds from the SW by Fri afternoon).
	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	light rain	cloudy	cloudy	mod. rain	rain shwrs	light rain	mod. rain	rain shwrs	some clouds	some clouds	some clouds	some clouds	some clouds	rain shwrs	light rain	mod. rain	heavy rain
Cloud base (m)	750	3750	6250	1750	1650	450	1000	400	1800	7150	6900		6400	6050	5700	2050	450	400
km/h	SW	SW	ESE	SE	SE	SSW	S	SSE	SSE	SE	SE	SSE	S	SW	S	SSW	SW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	0.1	—	—	7	5	5	9	8	—	—	—	—	—	0.2	3	5	25
max °C	9	8	7	12	9	8	9	10	12	17	14	12	15	13	11	11	10	9
min °C	8	7	6	9	8	8	8	10	10	14	13	11	13	11	10	10	9	7
chill °C	5	7	6	8	6	6	6	9	9	14	12	11	13	10	7	7	6	5

Freezing level m	1550	1650	2100	1900	2150	1950	2200	2750	3100	3100	3300	3250	2900	2650	2500	2300	2250	1800

	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 36mm), heaviest during Tue afternoon. Very mild (max 12°C on Mon morning, min 6°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 34mm), heaviest during Fri night. Very mild (max 17°C on Wed morning, min 7°C on Fri night). Winds increasing (calm on Thu afternoon, strong winds from the SW by Fri afternoon).

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	13°C	Dry	Calm (0 kph at 335).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14°C	Clear	Light winds from the SSE (11 kph at 150).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	17°C	Dry	Calm (0 kph at 257).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Fog -.	Light winds from the N (6 kph at 1).	1 km Low: scattered Mid: broken High: overcast
SHIP4337 43 km W 15m alt. 3 hours ago			Calm (4 kph at 240).	- km
SHIP8197 43 km W 15m alt. 2 hours ago			Calm (6 kph at 200).	- km
SHIP4564 43 km W 3m alt. 2 hours ago	15°C		Calm (4 kph at 240).
SHIP7814 43 km W 3m alt. 3 hours ago	15°C		Calm (4 kph at 240).
SHIP3521 43 km W 15m alt. 2 hours ago			Calm (4 kph at 240).	- km
SHIP8569 43 km W 15m alt. 3 hours ago			Calm (4 kph at 240).	- 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.