– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 08 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 08 Apr 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 11°C on Thu afternoon, min 3°C on Wed morning). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 4mm) at first, then becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 5°C on Sat afternoon, min -1°C on Mon morning). Wind will be generally light.
	Wednesday 8			Thursday 9			Friday 10			Saturday 11			Sunday 12			Monday 13
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	some clouds	cloudy	light rain	light rain	rain shwrs	rain shwrs	light rain	light rain	cloudy	light snow	light snow	light snow
km/h	SSW	WNW	NNE	ESE	E	SE	S	W	N	SSE	E	SSE	WNW	WSW	SW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2	1	1
mm	—	—	—	—	—	—	—	—	0.2	1.9	0.8	0.1	0.2	0.8	—	—	—	—
max °C	4	5	6	8	11	10	9	9	7	3	5	5	3	3	2	0	0	0
min °C	3	5	5	6	10	9	9	8	4	3	4	4	3	2	0	-1	-1	0
chill °C	3	4	4	4	10	7	8	7	4	0	2	4	1	-1	-4	-7	-7	-6

Freezing level m	2200	2250	2500	2600	2750	2700	2600	2500	2350	1850	2200	2100	1900	1750	1350	1150	1300	1250
Cloud base (m)	8050	8500		9250			4150	2550	1550	400	550	600	400	400	400	450	450	450

	6:31	—	—	6:30	—	—	6:28	—	—	6:26	—	—	6:24	—	—	6:22	—	—
	—	7:45	—	—	7:46	—	—	7:49	—	—	7:50	—	—	7:51	—	—	7:52	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 11°C on Thu afternoon, min 3°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm) at first, then becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 5°C on Sat afternoon, min -1°C on Mon 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. 1 hour ago	16° C	Dry	Calm (0 kph at 19).
Snoqualmie Pass 30 km ESE 824m alt. 22 minutes ago	13° C	-	Calm (0 kph at 137).
Renton 30 km WSW 160m alt. 48 minutes ago	14° C	Dry	Wind obs. (6 kph from 289 degs) was rejected.
Grotto wx 35 km NE 321m alt. 34 minutes ago	16° C	Dry	Light winds from the WSW (14 kph at 256).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Clear	Light winds from the NNW (17 kph at 330).	16 km
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	10° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 18 minutes ago	14° C	Dry	Calm (3 kph at 62).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	Clear	Light winds from the N (9 kph at 1).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13° C	Dry and partly cloudy.	Light winds from the W (15 kph at 260).	16 km Low: scattered
Snohomish 49 km NW 196m alt. 55 minutes ago	14° C	Dry	Calm (5 kph at 229).

* 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.