– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Wed 08 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 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 6mm) at first, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 5°C on Sat morning, min -1°C on Mon night). 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	light rain	light rain	cloudy	light snow	cloudy	light snow	light snow
km/h	SW	WNW	NE	ESE	E	SE	S	W	N	SE	SE	SW	SW	WSW	SW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	—	1	2
mm	—	—	—	—	—	—	—	—	0.2	2	3	0.6	0.1	—	—	—	—	—
max °C	4	5	6	8	11	10	9	8	7	5	5	4	2	1	1	0	0	0
min °C	3	5	5	7	10	9	9	8	5	4	4	3	1	1	0	0	0	-1
chill °C	3	4	5	5	10	8	8	7	3	2	2	1	-2	-3	-5	-5	-5	-7

Freezing level m	2200	2250	2550	2650	2750	2700	2600	2550	2300	2100	2150	1850	1550	1450	1350	1250	1300	1150
Cloud base (m)	8000	9250	9250			9150	3150	2550	1550	550	400	400	400	400	400	400	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 6mm) at first, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 5°C on Sat morning, min -1°C on Mon night). 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. 2 hours ago	1° C	-	Calm (0 kph at 339).
Snoqualmie Pass 30 km ESE 824m alt. 50 minutes ago	-4° C	-	Calm (0 kph at 343).
Renton 30 km WSW 160m alt. 1 hour ago	2° C	-	Calm (0 kph at 54).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	2° C	-	Light winds from the ENE (6 kph at 57).
Renton Airport 36 km WSW 218m alt. 2 hours ago	3° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	-3° C	-	Calm (0 kph at 341).
Auburn 39 km SW 119m alt. 1 hour ago	2° C	-	Calm (0 kph at 90).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 2 hours ago	-3° C	-	Calm (0 kph at 306).

* 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.