– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Thu 22 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Thu 22 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 14°C on Sun afternoon, min 5°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 13°C on Mon afternoon, min 4°C on Tue night). Wind will be generally light.
		Friday 23			Saturday 24			Sunday 25			Monday 26			Tuesday 27
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	rain shwrs	rain shwrs	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	cloudy	clear
Cloud base (m)		550	750	7050	5750	4600		3300	5600	5250	5750			8250	5950	1950
km/h	NNW	W	NW	E	SW	E	ESE	ESE	E	E	NNE	NW	ENE	NW	NW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.2	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	6	6	8	6	10	13	9	13	14	10	12	13	9	9	10	6
min °C	5	5	8	5	6	11	8	8	13	9	8	12	6	6	9	4
chill °C	3	4	7	5	5	11	7	7	13	8	7	12	6	6	9	4

Freezing level m	1500	1250	2150	2500	2650	2700	2600	2550	2600	2600	2550	2550	2350	2100	1950	1500

	—	7:35	—	—	7:37	—	—	7:39	—	—	7:41	—	—	7:41	—	—
	—	—	6:05	—	—	6:02	—	—	6:00	—	—	5:59	—	—	5:58	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 14°C on Sun afternoon, min 5°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 13°C on Mon afternoon, min 4°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
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 32 minutes ago	13°C	Dry	Calm (0 kph at 107).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0°C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Monroe 44 km NW 80m alt. 51 minutes ago	15°C	Dry	Calm (0 kph at 175).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8°C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8°C	Dry and partly cloudy.	Light winds from the N (9 kph at 10).	16 km Low: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 44 minutes ago	4°C	Dry	Calm (0 kph at 296).
Seattle 49 km WSW 100m alt. 42 minutes ago	15°C	-	Calm (0 kph at 101).

* 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.