– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 15 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 15 Jun 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 28°C on Mon afternoon, min 9°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.
	Mon 15		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	light rain	rain shwrs	clear	some clouds	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear
km/h	W	SSW	WSW	WNW	ENE	NW	NW	ENE	WNW	NW	ENE	WNW	WNW	W	W	W	SSE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	0.3	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	28	21	15	17	15	13	19	17	20	22	19	20	24	21	16	21	19
min °C	28	14	15	15	9	11	17	12	16	22	15	18	23	11	13	19	10
chill °C	28	13	14	15	9	11	17	12	16	22	15	18	23	11	13	19	10

Freezing level m	4550	4200	4000	3800	3900	3550	3900	4250	4200	4300	4350	4200	4150	4050	3700	3600	3350
Cloud base (m)	5450		800	550	1750	600					6850	5450					9400

	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	9:05	—	—	9:06	—	—	9:06	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 28°C on Mon afternoon, min 9°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Fri afternoon, min 10°C on Sat 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. 2 hours ago	29° C	Dry	Calm (0 kph at 169).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	28° C	-	Calm (0 kph at 114).
Renton 30 km WSW 160m alt. 1 hour ago	32° C	Dry	Calm (5 kph at 350).
Black Diamond 32 km SSW 192m alt. 54 minutes ago		-	Calm (3 kph at 267).
Grotto wx 35 km NE 321m alt. 50 minutes ago	29° C	Dry	Light winds from the W (14 kph at 267).
Renton Airport 36 km WSW 218m alt. 3 hours ago	31° C	Clear	Light winds from the N (11 kph at 350).	16 km
Grotto wx 39 km NE 1101m alt. 51 minutes ago	23° C	Dry	Calm (2 kph at 82).
Auburn 39 km SW 119m alt. 38 minutes ago	31° C	Dry	Calm (0 kph at 178).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	25° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
SHIP4983 43 km W 15m alt. 3 hours ago				- 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.