– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 15 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 15 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mild at first with light rain (total 4mm) on Wed afternoon followed by colder weather and light fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 8°C on Fri afternoon, min 0°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 21°C on Mon afternoon, min 6°C on Sat morning). Wind will be generally light.
	Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sunday 19			Monday 20
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	light snow	mod. snow	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	cloudy	some clouds	cloudy	some clouds	cloudy	some clouds	clear	some clouds	clear	clear
km/h	NW	WSW	NW	WNW	NNW	S	NE	E	ESE	ESE	ESE	ESE	ESE	NNW	ENE	NE	NNW	ESE
See all weather maps
cm	2	2	6	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	3	—	0.3	0.5	0.5	0.1	0.1	—	—	—	—	—	—	—	—	—	—
max °C	1	2	1	3	6	4	4	8	5	11	13	10	15	17	13	18	21	17
min °C	1	2	0	1	5	1	2	6	5	6	12	9	11	16	11	14	20	15
chill °C	-1	0	-2	1	4	1	2	6	4	5	12	8	10	16	11	14	20	15

Freezing level m	650	800	600	850	1300	650	1000	1450	2150	2300	2500	2800	2900	2800	3050	3200	3300	3350
Cloud base (m)	400	450	450	450	850	550	500	700	5600			5200	6400		5850	6600		5550

	6:18	—	—	6:16	—	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—
	—	7:55	—	—	7:57	—	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mild at first with light rain (total 4mm) on Wed afternoon followed by colder weather and light fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 8°C on Fri afternoon, min 0°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 21°C on Mon afternoon, min 6°C on Sat 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	7° C	Dry	Calm (0 kph at 235).
Snoqualmie Pass 30 km ESE 824m alt. 44 minutes ago	3° C	-	Calm (0 kph at 9).
Renton 30 km WSW 160m alt. 2 hours ago	4° C	Dry	Calm (0 kph at 153).
Grotto wx 35 km NE 321m alt. 1 hour ago	3° C	Dry	Light winds from the W (8 kph at 261).
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	-	Light winds from the N (7 kph at 1).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	-2° C	-	Calm (0 kph at 114).
Auburn 39 km SW 119m alt. 38 minutes ago		-	Calm (5 kph at 52).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Light snow.	Light winds from the N (6 kph at 1).	0 km Mid: broken High: broken
Woodinville 43 km WNW 137.2m alt. 2 hours ago	4° C	Dry	Wind obs. (19 kph from 304 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	5° C	Dry and cloudy.	Light winds from the SSE (7 kph at 150).	16 km Low: scattered Mid: broken High: overcast

* 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.