– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Wed 29 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Wed 29 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 Fri night. Very mild (max 13°C on Sat afternoon, min 9°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 16°C on Sun afternoon, min 11°C on Mon night). Wind will be generally light.
		Thursday 30			Friday 1			Saturday 2			Sunday 3			Monday 4			Tuesday 5
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	clear	rain shwrs	light rain	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	ESE	ESE	NW	SSW	SSE	WNW	NE	ENE	NNE	NE	E	N	ESE	NW	WNW	NNW	NNW	NW	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.2	1.5	0.1	0.1	0.3	—	—	—	—	—	—	—	—	—
max °C	10	12	12	11	11	11	9	11	13	13	15	16	16	16	16	15	12	13	12
min °C	9	10	11	10	10	10	9	10	13	13	14	16	16	16	16	11	12	12	11
chill °C	8	8	11	10	10	10	8	8	13	12	14	16	16	16	16	11	12	12	11

Freezing level m	2700	2800	2850	2850	2800	2950	2850	2800	3150	3200	3200	3400	3350	3400	3500	3650	3700	3750	3750
Cloud base (m)	2650	9150		7100	8050	2950	3050	1750	6150			3500	8400		9050	9300

	—	5:52	—	—	5:50	—	—	5:48	—	—	5:47	—	—	5:45	—	—	5:43	—	—
	—	—	—	8:16	—	—	8:17	—	—	8:19	—	—	8:21	—	—	8:22	—	—	8:22

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Fri night. Very mild (max 13°C on Sat afternoon, min 9°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Sun afternoon, min 11°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	8° C	Dry	Calm (0 kph at 335).
Snoqualmie Pass 30 km ESE 824m alt. 36 minutes ago	3° C	-	Calm (0 kph at 232).
Renton 30 km WSW 160m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 32).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	11° C	Dry	Calm (3 kph at 61).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Clear	Light winds from the NW (11 kph at 320).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 352).
Auburn 39 km SW 119m alt. 3 hours ago	16° C	Dry	Calm (0 kph at 9).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	8° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 42 minutes ago	2° C	-	Calm (0 kph at 269).

* 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.