– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 25 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 25 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Sun night. Mild temperatures (max 7°C on Sun afternoon, min 1°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Mild temperatures (max 9°C on Thu afternoon, min 2°C on Tue night). Wind will be generally light.
		Sunday 26			Monday 27			Tuesday 28			Wednesday 29			Thursday 30			Friday 1
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	rain shwrs	rain shwrs	rain shwrs	light rain	cloudy	rain shwrs	rain shwrs	clear	clear	clear	some clouds	rain shwrs	rain shwrs	some clouds	cloudy	light rain
km/h	NNW	NW	WNW	SSW	SSW	SW	SW	SW	WNW	NNW	E	NW	SSE	SW	W	N	N	WNW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	1.3	0.1	0.1	0.2	—	0.1	0.3	—	—	—	—	0.1	0.1	—	—	0.1
max °C	5	5	7	6	2	3	2	1	2	3	5	8	8	7	9	7	5	7	6
min °C	4	5	6	3	2	3	1	1	1	2	4	7	7	7	8	4	5	6	3
chill °C	4	2	3	0	-2	0	-2	-4	-2	0	4	7	6	6	6	1	3	6	0

Freezing level m	1850	1850	2050	1900	1550	1650	1450	1450	1550	1750	2250	2650	2750	2450	2550	2500	2350	2350	2050
Cloud base (m)		2950	2350	2200	650	850	450	450	550	500	750		9300	2600	1800	1950	6750	1700	600

	—	5:58	—	—	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—	5:50	—	—
	—	—	—	8:10	—	—	8:12	—	—	8:14	—	—	8:15	—	—	8:16	—	—	8:17

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun night. Mild temperatures (max 7°C on Sun afternoon, min 1°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 9°C on Thu afternoon, min 2°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. 44 minutes ago	4° C	Dry	Calm (0 kph at 44).
Snoqualmie Pass 30 km ESE 824m alt. 48 minutes ago	-1° C	-	Calm (0 kph at 134).
Renton 30 km WSW 160m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 37).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	6° C	Dry	Calm (5 kph at 62).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	-1° C	-	Calm (0 kph at 339).
Auburn 39 km SW 119m alt. 2 hours ago	5° C	Dry	Calm (0 kph at 162).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Clear	Calm (0 kph at 0).	16 km
SHIP3345 42 km WSW 15m alt. 3 hours ago			Calm (4 kph at 180).	- 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.