– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sun 21 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sun 21 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 19°C on Tue afternoon, min 9°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 27mm), heaviest during Fri night. Very mild (max 15°C on Wed afternoon, min 5°C on Fri night). Winds increasing (calm on Wed morning, strong winds from the WSW by Fri night).
	Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25			Friday 26
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	clear	clear	some clouds	some clouds	clear	clear	clear	cloudy	some clouds	cloudy	some clouds	mod. rain	light rain	light rain	heavy rain
km/h	N	NW	N	ESE	NW	ESE	NW	WNW	NNW	W	W	SW	SW	SW	SW	SW	SW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	6	2	4	15
max °C	9	14	14	16	18	18	18	19	18	14	15	13	7	10	9	8	7	6
min °C	9	12	12	14	17	16	17	18	14	14	14	8	7	9	7	7	6	5
chill °C	8	11	11	14	17	16	17	18	14	14	14	6	4	7	6	4	1	-1

Freezing level m	3300	3500	3500	3500	3800	3700	3600	3700	3750	3700	3700	3500	3450	3450	3200	2600	2400	2200
Cloud base (m)				8800		3900	3500		8350	8400	6900	9050		3350	400	400	450	400

	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:11	—	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 19°C on Tue afternoon, min 9°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 27mm), heaviest during Fri night. Very mild (max 15°C on Wed afternoon, min 5°C on Fri night). Winds increasing (calm on Wed morning, strong winds from the WSW by Fri night).

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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 359).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	7° C	-	Calm (0 kph at 45).
Renton 30 km WSW 160m alt. 47 minutes ago	13° C	Dry	Calm (0 kph at 144).
Grotto wx 35 km NE 321m alt. 2 hours ago	12° C	Dry	Calm (2 kph at 230).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	8° C	Dry	Calm (0 kph at 158).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 325).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Mist -.	Calm (0 kph at 0).	5 km Low: few Mid: scattered High: overcast
Woodinville 43 km WNW 137.2m alt. 1 hour ago	13° C	Dry	Calm (2 kph at 301).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	13° C	Clear	Calm (0 kph at 0).	16 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.