– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Fri 01 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Fri 01 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 3mm), mostly falling on Sat night. Warm (max 22°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 23°C on Mon afternoon, min 8°C on Wed night). Wind will be generally light.
	Friday 1			Saturday 2			Sunday 3			Monday 4			Tuesday 5			Wednesday 6
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	rain shwrs	rain shwrs	rain shwrs	risk tstorm	some clouds	cloudy	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds
km/h	NNW	WNW	SSW	N	WNW	E	NW	NW	E	WNW	WNW	W	WNW	WNW	S	WSW	WSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	1.8	0.1	0.1	1	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	19	15	18	20	17	21	22	19	20	23	17	15	19	17	15	17	14
min °C	15	19	12	13	20	15	18	22	16	18	22	10	12	18	11	13	17	8
chill °C	15	19	12	13	20	15	18	22	16	18	22	10	12	18	11	13	17	7

Freezing level m	2900	3050	3100	3050	3250	3200	3250	3400	3400	3400	3500	3650	3700	3700	3700	3550	3300	3350
Cloud base (m)		3150	3400	2750				6450		9100							2000

	5:50	—	—	5:48	—	—	5:47	—	—	5:45	—	—	5:43	—	—	5:41	—	—
	—	—	8:17	—	—	8:19	—	—	8:21	—	—	8:22	—	—	8:22	—	—	8:24

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 3mm), mostly falling on Sat night. Warm (max 22°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Mon afternoon, min 8°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. 43 minutes ago	23° C	Dry	Calm (0 kph at 329).
Snoqualmie Pass 30 km ESE 824m alt. 53 minutes ago	22° C	-	Calm (0 kph at 4).
Renton 30 km WSW 160m alt. 1 hour ago	20° C	Dry	Wind obs. (6 kph from 301 degs) was rejected.
Black Diamond 32 km SSW 192m alt. 41 minutes ago		-	Calm (5 kph at 39).
Grotto wx 35 km NE 321m alt. 1 hour ago	26° C	Dry	Light winds from the W (8 kph at 267).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	-	Light winds from the NNW (19 kph at 330).	16 km Low: few
Grotto wx 39 km NE 1101m alt. 1 hour ago	19° C	Dry	Calm (3 kph at 192).
Auburn 39 km SW 119m alt. 1 hour ago	20° C	Dry	Calm (2 kph at 242).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 31 minutes ago	21° C	Dry	Calm (5 kph at 107).

* 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.