– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 am Thu 05 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 am Thu 05 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 25mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 7°C on Thu afternoon). Winds increasing (calm on Thu afternoon, fresh winds from the SW by Sat night).									Days 4–6 Weather Summary Some drizzle, heaviest during Sun morning. Very mild (max 15°C on Tue morning, min 5°C on Sun night). Wind will be generally light.
	Thursday 5			Friday 6			Saturday 7			Sunday 8			Monday 9			Tuesday 10
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	light rain	light rain	mod. rain	some clouds	some clouds	heavy rain	rain shwrs	rain shwrs	cloudy	clear	some clouds	clear	clear	clear	some clouds
Cloud base (m)	900	800	2800	1800	1750	400	950		650	500	800			4800	9400	2700	5700	6900
km/h	SW	SSW	S	SSE	SSW	S	SE	SSE	SSW	SW	WSW	ESE	SSE	NW	SE	SE	SE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.6	0.1	0.3	0.3	3	6	—	—	14	0.9	0.3	—	—	—	—	—	—	—
max °C	9	9	8	11	11	12	16	15	12	8	7	6	11	9	7	15	12	11
min °C	8	7	7	8	10	11	14	13	7	7	6	5	9	8	7	12	10	10
chill °C	6	6	6	7	9	10	14	12	3	4	6	4	9	7	6	11	9	9

Freezing level m	1550	1700	2500	2500	2800	3100	3100	2850	1750	1450	1350	2000	2050	2100	2600	2850	3150	3200

	6:56	—	—	6:58	—	—	7:00	—	—	7:01	—	—	7:03	—	—	7:03	—	—
	—	4:43	—	—	4:42	—	—	4:39	—	—	4:38	—	—	4:37	—	—	4:36	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 25mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 7°C on Thu afternoon). Winds increasing (calm on Thu afternoon, fresh winds from the SW by Sat night).

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Sun morning. Very mild (max 15°C on Tue morning, min 5°C on Sun 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 30 km WSW 160m alt. 2 hours ago	9°C	Dry	Calm (0 kph at 217).
Black Diamond 32 km SSW 192m alt. 2 hours ago	10°C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 2 hours ago	0°C	-	Calm (0 kph at 93).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	3°C	Light rain .	Light winds from the W.(Wind varies from 220 to 310 degs) (13 kph at 280).	3 km Mid: broken High: overcast
Monroe 44 km NW 80m alt. 2 hours ago	11°C	Dry	Calm (0 kph at 36).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	11°C	Dry and partly cloudy.	Light winds from the SSE (11 kph at 160).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	9°C	Dry and cloudy.	Light winds from the WNW (6 kph at 300).	16 km Low: broken Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 2 hours ago	9°C	Dry	Calm (3 kph at 176).

* 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.