– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 17 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 17 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Fri afternoon. Warm (max 27°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.
	Mon 17		Tuesday 18			Wednesday 19			Thursday 20			Friday 21			Saturday 22
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	light rain	light rain	rain shwrs	light rain	rain shwrs	clear
Cloud base (m)			8550	5100			9500	9250				900	4450		650	750
km/h	WNW	SSW	W	WSW	SSE	W	W	E	W	WNW	E	W	W	SSW	SW	W	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	0.2	0.4	0.6	0.1	0.1	—
max °C	23	20	20	24	20	19	23	20	23	27	22	24	24	19	14	17	15
min °C	22	16	16	23	13	15	22	16	18	26	20	20	23	13	13	15	13
chill °C	22	16	16	23	13	15	22	16	18	26	20	20	23	13	13	15	13

Freezing level m	4150	4150	4300	4250	4400	4300	4300	4450	4400	4550	4650	4350	4250	3650	3600	3900	4050

	—	—	6:05	—	—	6:07	—	—	6:09	—	—	6:09	—	—	6:11	—	—
	—	8:15	—	—	8:14	—	—	8:12	—	—	8:09	—	—	8:07	—	—	8:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Fri afternoon. Warm (max 27°C on Thu afternoon, min 13°C on Fri 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. 37 minutes ago	23° C	Dry	Calm (0 kph at 305).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	26° C	Clear	Light winds from the N (15 kph at 350).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	27° C	Dry	Calm (0 kph at 167).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	25° C	Clear	Light winds from the N (9 kph at 1).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	25° C	-	Light winds from the NNW (9 kph at 330).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 59 minutes ago
Snohomish 49 km NW 196m alt. 1 hour ago	20° C	Dry	Calm (5 kph at 184).
Seattle 49 km WSW 100m alt. 1 hour ago	29° C	-
SHIP4497 54 km W 15m alt. 2 hours ago			Light winds from the NW (8 kph at 320).	- 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.