– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 28 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 28 Jun 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 Sun night. Very mild (max 15°C on Mon afternoon, min 9°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 22°C on Sat afternoon, min 9°C on Wed night). Wind will be generally light.
		Monday 29			Tuesday 30			Wednesday 1			Thursday 2			Friday 3			Saturday 4
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	light rain	rain shwrs	rain shwrs	light rain	some clouds	cloudy	rain shwrs	some clouds	rain shwrs	cloudy	some clouds	light rain	rain shwrs	some clouds	clear	some clouds	some clouds
km/h	W	W	NW	WNW	W	W	W	SW	WSW	WNW	WNW	W	WSW	SW	W	SE	W	WNW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	0.2	0.1	0.2	0.1	0.2	—	—	0.2	—	0.1	—	—	0.2	0.2	—	—	—	—
max °C	11	10	15	13	12	14	14	10	13	12	13	17	14	13	18	17	18	22	18
min °C	10	10	11	10	10	14	9	10	12	9	10	16	11	12	14	11	15	22	12
chill °C	10	10	11	10	10	14	9	10	12	9	10	16	11	12	14	11	15	22	12

Freezing level m	3500	3750	3650	3450	3350	3250	3200	2850	3050	3350	3150	2850	2850	3500	3700	3700	3600	3700	3500
Cloud base (m)	450	450	500	750	650	900	1700	550	700	750	700	1600	1850	500	700	7200	6600

	—	5:11	—	—	5:11	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:15	—	—
	—	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:06

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun night. Very mild (max 15°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 22°C on Sat afternoon, min 9°C on Wed 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. 46 minutes ago	12° C	Dry	Calm (0 kph at 298).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	11° C	-	Calm (2 kph at 190).
Renton 30 km WSW 160m alt. 51 minutes ago	13° C	Dry	Calm (2 kph at 226).
Grotto wx 35 km NE 321m alt. 2 hours ago	14° C	Dry	Calm (0 kph at 295).
Renton Airport 36 km WSW 218m alt. 3 hours ago	17° C	Dry and cloudy.	Light winds from the S (13 kph at 180).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 157).
Auburn 39 km SW 119m alt. 42 minutes ago	25° C	Dry	Calm (0 kph at 275).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Fog -.	Wind obs. (7 kph from 1 degs) was rejected.	1 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	13° C	Dry	Wind obs. (19 kph from 297 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	16° C	Dry and partly cloudy.	Light winds from the SSW (11 kph at 200).	16 km Low: broken Mid: broken

* 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.