– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 11 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 11 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 25°C on Sun morning, min 9°C on Thu night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 27°C on Sun afternoon, min 9°C on Tue night). Wind will be generally light.
	Thu 11		Friday 12			Saturday 13			Sunday 14			Monday 15			Tuesday 16
	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	some clouds	some clouds	clear	light rain	rain shwrs	some clouds
km/h	NW	NNW	NW	NW	E	NW	NW	ESE	NW	NW	ENE	NW	W	SSW	WSW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	0.1	—
max °C	18	15	15	18	16	22	24	21	25	27	23	26	27	21	14	19	17
min °C	17	9	12	18	13	18	24	17	21	27	19	22	26	12	13	16	9
chill °C	17	9	12	18	13	18	24	17	21	27	19	22	26	11	12	16	8

Freezing level m	3250	3350	3300	3450	3200	3500	3800	3900	4100	4350	4650	4600	4600	4050	4100	4100	3700
Cloud base (m)		2100	8850	9000				8950	9550			6650	6150		550	700	400

	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	9:02	—	—	9:04	—	—	9:04	—	—	9:05	—	—	9:05	—	—	9:06

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Sun morning, min 9°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 27°C on Sun afternoon, min 9°C on Tue 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. 1 hour ago	23° C	Dry	Calm (0 kph at 352).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	19° C	-	Calm (0 kph at 205).
Renton 30 km WSW 160m alt. 41 minutes ago	24° C	Dry	Calm (2 kph at 24).
Black Diamond 32 km SSW 192m alt. 39 minutes ago		-	Light winds from the NW (8 kph at 315).
Grotto wx 35 km NE 321m alt. 2 hours ago	22° C	Dry	Light winds from the W (14 kph at 270).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22° C	Clear	Light winds from the NNW (17 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	14° C	Dry	Calm (5 kph at 71).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (2 kph at 165).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Clear	Light winds from the N (9 kph at 1).	16 km
SHIP6020 42 km WSW 3m alt. 1 hour ago

* 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.