– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Thu 16 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Thu 16 Apr 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 2mm) on Thu morning. Very mild (max 15°C on Sat afternoon, min 1°C on Thu morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 20°C on Mon afternoon, min 12°C on Sun morning). Wind will be generally light.
	Thursday 16			Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	snow shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	some clouds	some clouds
km/h	WNW	NNE	SSW	SSE	ENE	ESE	SE	E	ESE	ESE	NNE	ENE	NNW	NW	ESE	NW	NW	NNW
See all weather maps
cm	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.5	0.6	0.8	0.3	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	2	5	3	4	8	6	11	15	11	17	19	14	18	20	16	19	20	16
min °C	1	4	2	2	7	5	7	14	10	12	19	12	14	20	13	15	20	13
chill °C	-1	3	0	2	7	4	6	14	9	12	19	12	14	20	13	15	20	13

Freezing level m	750	1150	850	1000	1450	2200	2350	2500	2650	2800	3000	3050	3150	3200	3200	3350	3350	3350
Cloud base (m)	450	550	550	450	700	5850		3300	2800	3300	4900	5900	6150	4900			6400	5400

	6:16	—	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—
	—	7:57	—	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of snow turning to light rain (total 2mm) on Thu morning. Very mild (max 15°C on Sat afternoon, min 1°C on Thu morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Mon afternoon, min 12°C on Sun morning). 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. 1 hour ago	8° C	Dry	Calm (3 kph at 165).
Snoqualmie Pass 30 km ESE 824m alt. 30 minutes ago	3° C	-	Calm (0 kph at 166).
Renton 30 km WSW 160m alt. 33 minutes ago	7° C	Dry	Calm (2 kph at 220).
Grotto wx 35 km NE 321m alt. 1 hour ago	3° C	Dry	Light winds from the W (10 kph at 260).
Renton Airport 36 km WSW 218m alt. 1 hour ago	7° C	Dry and partly cloudy.	Light winds from the S (7 kph at 180).	16 km Low: broken
Grotto wx 39 km NE 1101m alt. 2 hours ago	2° C	-	Calm (2 kph at 91).
Auburn 39 km SW 119m alt. 33 minutes ago		-	Calm (3 kph at 208).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Fog freezing -.	Wind obs. (7 kph from 1 degs) was rejected.	0 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	4° C	Dry	Wind obs. (14 kph from 267 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and partly cloudy.	Light winds from the SW (9 kph at 220).	16 km Low: 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.