– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Fri 19 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Fri 19 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 25°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 26°C on Mon afternoon, min 11°C on Wed night). Wind will be generally light.
	Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	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	clear	clear	some clouds	clear	clear	clear	clear	clear
km/h	W	WNW	SSW	WSW	W	ENE	WNW	NW	E	WNW	NW	E	NW	NW	NNE	WNW	W	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	23	25	22	16	20	18	17	22	20	24	26	23	23	26	22	18	22	20
min °C	20	25	11	13	18	10	13	20	15	20	26	18	20	26	13	16	21	11
chill °C	20	25	10	12	18	10	13	20	15	20	26	18	20	26	13	16	21	11

Freezing level m	3900	4050	3850	3650	3550	3550	3450	3600	3600	3600	3950	3850	3700	4000	3800	3650	3750	3900
Cloud base (m)	5550	5600				9050				9150		8600

	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 26°C on Mon afternoon, min 11°C on Wed night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 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. 40 minutes ago	27° C	Dry	Calm (0 kph at 278).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	27° C	-	Calm (2 kph at 242).
Renton 30 km WSW 160m alt. 3 hours ago	26° C	Dry	Calm (2 kph at 206).
Black Diamond 32 km SSW 192m alt. 3 hours ago		-	Wind obs. (11 kph from 243 degs) was rejected.
Grotto wx 35 km NE 321m alt. 1 hour ago	28° C	Dry	Light winds from the W (16 kph at 259).
Renton Airport 36 km WSW 218m alt. 2 hours ago	27° C	Clear	Light winds from the N (9 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	25° C	Dry	Calm (5 kph at 111).
Auburn 39 km SW 119m alt. 49 minutes ago	37° C	Dry	Calm (0 kph at 214).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	21° C	Clear	Light winds from the WNW (7 kph at 300).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	30° C	Dry	Calm (0 kph at 46).

* 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.