– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 07 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 07 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Freeze-thaw conditions (max 10°C on Thu afternoon, min -2°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 10°C on Fri morning, min -2°C on Sun night). Wind will be generally light.
	Tuesday 7			Wednesday 8			Thursday 9			Friday 10			Saturday 11			Sunday 12
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

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

Freezing level m	1100	1550	1650	2000	2150	2450	2650	2700	2800	2700	2750	2600	2300	2200	2100	1750	1800	1100
Cloud base (m)	550	800			9000	9300				6800		2750	2300	1750	1500	450	750	1650

	6:33	—	—	6:31	—	—	6:30	—	—	6:28	—	—	6:26	—	—	6:24	—	—
	—	7:44	—	—	7:45	—	—	7:46	—	—	7:49	—	—	7:50	—	—	7:51	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 10°C on Thu afternoon, min -2°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 10°C on Fri morning, min -2°C on Sun 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. 20 minutes ago	13° C	Dry	Calm (3 kph at 343).
Snoqualmie Pass 30 km ESE 824m alt. 57 minutes ago	8° C	-	Calm (0 kph at 154).
Renton 30 km WSW 160m alt. 52 minutes ago	12° C	Dry	Calm (3 kph at 172).
Black Diamond 32 km SSW 192m alt. 45 minutes ago		-	Light winds from the SSW (10 kph at 209).
Grotto wx 35 km NE 321m alt. 45 minutes ago	13° C	Dry	Light winds from the W (13 kph at 267).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Light winds from the N (7 kph at 0).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 23 minutes ago	7° C	Dry	Calm (2 kph at 96).
Auburn 39 km SW 119m alt. 39 minutes ago	24° C	Dry	Calm (0 kph at 265).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Clear	Light winds from the W (13 kph at 260).	16 km
SHIP4163 42 km WSW 15m alt. 2 hours ago				- km

* 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.