– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 pm Sat 07 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 pm Sat 07 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 32mm), heaviest during Sat night. Very mild (max 12°C on Mon morning, min 5°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun afternoon).										Days 5–7 Weather Summary Mostly dry. Very mild (max 16°C on Wed morning, min 10°C on Tue night). Wind will be generally light.
		Sunday 8			Monday 9			Tuesday 10			Wednesday 11			Thursday 12
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	light rain	cloudy	cloudy	light rain	rain shwrs	light rain	light rain	rain shwrs	some clouds	some clouds	some clouds	some clouds	some clouds	clear
Cloud base (m)	450	600	1950	6450	2150	1850	450	800	750	5650	5800		5850	8050	6450	6000
km/h	SW	SW	SW	ESE	SE	SE	SSW	S	SSE	SSE	SSE	SE	ESE	SSE	SSW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	16	3	0.1	—	—	4	4	1.9	3	0.1	—	—	—	—	—	—
max °C	11	8	8	7	12	11	7	10	10	11	16	14	12	14	13	10
min °C	7	7	6	5	9	7	7	8	10	10	14	12	11	14	11	10
chill °C	3	4	6	4	8	4	5	6	9	9	14	11	11	14	10	9

Freezing level m	1800	1450	1550	2050	1900	2200	1850	2150	2900	3100	3200	3300	3350	3100	2700	2600

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

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 32mm), heaviest during Sat night. Very mild (max 12°C on Mon morning, min 5°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun afternoon).

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Wed morning, min 10°C on Tue 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. 44 minutes ago	13°C	Dry	Wind obs. (6 kph from 105 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	13°C	Dry and cloudy.	Wind obs. (13 kph from 140 degs) was rejected.	16 km Low: broken Mid: broken High: overcast
Auburn 39 km SW 119m alt. 47 minutes ago	2°C	-	Calm (0 kph at 227).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4°C	Light rain .	Wind obs. (17 kph from 270 degs) was rejected.	11 km Low: broken Mid: overcast
SHIP603 43 km W -m alt. 1 hour ago	13°C	-	Light winds from the SE (9 kph at 140).
SHIP3907 43 km W 3m alt. 3 hours ago	13°C		Light winds from the S (9 kph at 190).
SHIP8739 43 km W 3m alt. 3 hours ago	13°C		Light winds from the S (9 kph at 190).
SHIP11821 43 km W 3m alt. 1 hour ago	12°C		Light winds from the SSE (9 kph at 150).
SHIP9932 43 km W 3m alt. 3 hours ago	13°C		Light winds from the S (9 kph at 180).
SHIP10480 43 km W 15m alt. 3 hours ago			Light winds from the S (10 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.