– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 16 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 16 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A dusting of snow on Sat night. Freezing level rising with drizzle on Tue afternoon. Freeze-thaw conditions (max 8°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 2mm), mostly falling on Tue night. Very mild (max 10°C on Fri afternoon, min 3°C on Tue night). Wind will be generally light.
		Sunday 17			Monday 18			Tuesday 19			Wednesday 20			Thursday 21			Friday 22
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	snow shwrs	some clouds	rain shwrs	some clouds	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	clear	clear	some clouds
km/h	NNW	NNW	NW	NW	NNW	NW	NNW	WNW	W	NNW	N	NW	WNW	NW	NW	NNW	NNW	NW	W
See all weather maps
cm	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	—	—	—	—	0.1	1	1.5	0.1	—	—	—	0.2	0.2	—	—	—
max °C	0	1	5	5	5	8	7	4	5	5	4	7	7	5	6	6	6	10	9
min °C	-1	0	3	4	4	6	4	4	5	3	3	5	5	5	5	4	4	8	6
chill °C	-7	-4	3	2	2	4	2	2	3	0	0	4	3	3	3	2	2	6	5

Freezing level m	1100	1400	2050	2100	2050	2250	2200	2000	2200	2300	2450	3100	2800	2800	2650	3250	3100	3150	3150
Cloud base (m)	500	650	850		6450	1850	1950	650	850	450	650	800	2100	800	650	700	500	7800

	—	5:26	—	—	5:26	—	—	5:24	—	—	5:24	—	—	5:22	—	—	5:22	—	—
	—	—	—	8:38	—	—	8:39	—	—	8:42	—	—	8:43	—	—	8:44	—	—	8:45

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of snow on Sat night. Freezing level rising with drizzle on Tue afternoon. Freeze-thaw conditions (max 8°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Tue night. Very mild (max 10°C on Fri afternoon, min 3°C on Tue 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	8° C	Dry	Calm (0 kph at 297).
Snoqualmie Pass 30 km ESE 824m alt. 53 minutes ago	3° C	-	Calm (0 kph at 100).
Renton 30 km WSW 160m alt. 55 minutes ago	5° C	Dry	Calm (0 kph at 40).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (5 kph at 0).
Grotto wx 35 km NE 321m alt. 4 hours ago	6° C	Dry	Calm (0 kph at 238).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Clear	Light winds from the S (6 kph at 170).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	0° C	-	Calm (2 kph at 60).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 174).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-1° C	Fog freezing -.	Light winds from the N (6 kph at 1).	0 km
Woodinville 43 km WNW 137.2m alt. 2 hours ago	2° C	-	Wind obs. (6 kph from 320 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.