– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 27 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 27 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Tue morning. Very mild (max 15°C on Mon afternoon, min 8°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Sat afternoon. Very mild (max 17°C on Fri afternoon, min 5°C on Sun morning). Wind will be generally light.
	Mon 27		Tuesday 28			Wednesday 29			Thursday 30			Friday 31			Saturday 1
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	rain shwrs	rain shwrs	rain shwrs	clear	some clouds	clear	clear	some clouds	clear	clear	clear	clear	some clouds	rain shwrs	rain shwrs
Cloud base (m)	2300		900	1550			7250		9400	6450					800	600	900
km/h	W	SW	SW	W	WSW	W	WNW	WNW	WSW	W	W	SW	W	W	SW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.4	0.5	0.7	—	—	—	—	—	—	—	—	—	—	1.3	0.2
max °C	15	14	10	12	11	10	14	14	13	15	14	15	17	16	11	13	9
min °C	14	10	9	11	8	9	13	12	13	14	12	13	16	12	10	9	6
chill °C	14	8	6	10	8	9	13	12	13	14	12	13	16	12	8	6	4

Freezing level m	3650	3700	3400	3550	3850	3950	4050	4300	4200	3950	4200	4350	4500	4300	3450	3000	3200

	—	—	5:39	—	—	5:39	—	—	5:41	—	—	5:43	—	—	5:43	—	—
	—	8:47	—	—	8:45	—	—	8:45	—	—	8:44	—	—	8:42	—	—	8:40

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Tue morning. Very mild (max 15°C on Mon afternoon, min 8°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Sat afternoon. Very mild (max 17°C on Fri afternoon, min 5°C on Sun morning). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 1 hour ago	26° C	Dry	Calm (5 kph at 198).
Renton Airport 36 km WSW 218m alt. 2 hours ago	27° C	Clear	Light winds from the SSW (9 kph at 210).	16 km
Auburn 39 km SW 119m alt. 46 minutes ago		-	Calm (0 kph at 274).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	19° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	27° C	-	Light winds from the W (13 kph at 270).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	26° C	-	Light winds from the W (11 kph at 270).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	23° C	Dry	Calm (5 kph at 244).
Seattle 49 km WSW 100m alt. 49 minutes ago	29° C	-
BUOY-WPOW1 55 km W 3m alt. 49 minutes ago	23° C		Light winds from the SSE (8 kph at 150).

* 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.