– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Tue 14 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Tue 14 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max 0°C on Tue night, min -5°C on Tue night). Mainly gales.									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 10°C on Sun afternoon, min -3°C on Fri morning). Wind will be generally light.
	Tuesday 14			Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sunday 19
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

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

Freezing level m	1150	1200	600	700	750	0	850	1100	900	950	1250	1600	2150	2400	2650	2700	2350	2600
Cloud base (m)	450	400	400	450	450	450	450	700	450	450	650	750	400	3150	5950	6000	2350	2400

	6:20	—	—	6:18	—	—	6:16	—	—	6:15	—	—	6:13	—	—	6:11	—	—
	—	7:53	—	—	7:55	—	—	7:57	—	—	7:58	—	—	—	8:00	—	—	8:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max 0°C on Tue night, min -5°C on Tue night). Mainly gales.

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 10°C on Sun afternoon, min -3°C on Fri 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. 2 hours ago	7° C	Dry	Calm (0 kph at 314).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	2° C	-	Calm (0 kph at 249).
Renton 30 km WSW 160m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 200).
Black Diamond 32 km SSW 192m alt. 58 minutes ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 51 minutes ago	5° C	Dry	Calm (0 kph at 247).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the S (13 kph at 190).	16 km Low: scattered Mid: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	-1° C	-	Calm (2 kph at 244).
Auburn 39 km SW 119m alt. 56 minutes ago	7° C	Dry	Calm (0 kph at 201).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Mist -.	Light winds from the N (11 kph at 1).	2 km Low: overcast
Woodinville 43 km WNW 137.2m alt. 1 hour ago	4° C	Dry	Calm (5 kph at 340).

* 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.