– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Thu 04 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Thu 04 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A dusting of snow turning to light rain (total 7mm) on Sat night. Freeze-thaw conditions (max 8°C on Thu afternoon, min 0°C on Fri night). Winds increasing (light winds from the WSW on Thu morning, fresh winds from the SW by Sat morning).									Days 4–6 Weather Summary Some drizzle, heaviest during Tue morning. Very mild (max 13°C on Tue afternoon, min 1°C on Sun morning). Wind will be generally light.
	Thursday 4			Friday 5			Saturday 6			Sunday 7			Monday 8			Tuesday 9
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	rain shwrs	cloudy	rain shwrs	snow shwrs	light snow	light snow	light rain	some clouds	rain shwrs	some clouds	some clouds	cloudy	light rain	rain shwrs	clear	clear
km/h	WSW	WSW	SSW	SW	SW	SW	SW	SW	SW	SW	NNW	ENE	E	NNW	N	NNE	WNW	WNW
See all weather maps
cm	—	—	—	—	—	1	2	1	—	—	—	—	—	—	—	—	—	—
mm	0.3	—	0.1	—	1.4	1.2	—	2	2	—	0.4	—	—	—	0.4	0.5	—	—
max °C	5	8	8	2	3	3	0	2	2	1	5	6	8	11	10	9	13	13
min °C	4	6	2	2	3	0	0	2	1	1	4	5	6	11	6	7	12	8
chill °C	2	4	-3	-3	-1	-6	-6	-2	-3	-4	2	5	6	10	4	5	12	7

Freezing level m	2250	2900	1900	1500	1700	1400	1350	1550	1450	1450	2150	2150	2250	2550	2500	2850	3000	3450
Cloud base (m)	700	900	1800	750	550	550	400	550	450	400	850		2400	2250	2800	1650	2800	9150

	5:11	—	—	5:11	—	—	5:11	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	8:58	—	—	8:59	—	—	9:00	—	—	9:00	—	—	9:00	—	—	9:01

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of snow turning to light rain (total 7mm) on Sat night. Freeze-thaw conditions (max 8°C on Thu afternoon, min 0°C on Fri night). Winds increasing (light winds from the WSW on Thu morning, fresh winds from the SW by Sat morning).

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Tue morning. Very mild (max 13°C on Tue afternoon, min 1°C on Sun morning). Wind will be generally light.

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. 38 minutes ago	18° C	Dry	Calm (0 kph at 355).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	16° C	-	Calm (0 kph at 301).
Renton 30 km WSW 160m alt. 1 hour ago	18° C	Dry	Calm (3 kph at 323).
Black Diamond 32 km SSW 192m alt. 50 minutes ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 57 minutes ago	14° C	Dry	Light winds from the W (13 kph at 273).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Haze -.	Light winds from the S (7 kph at 170).	10 km Low: overcast
Grotto wx 39 km NE 1101m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 67).
Auburn 39 km SW 119m alt. 47 minutes ago		-	Calm (2 kph at 199).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11° C	-	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: few
Woodinville 43 km WNW 137.2m alt. 35 minutes ago	18° C	Dry	Wind obs. (11 kph from 256 degs) was rejected.

* 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.