– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 13 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 13 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 20°C on Sun afternoon, min 8°C on Tue morning). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 20°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.
		Sunday 14			Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	some clouds	clear	clear	cloudy	rain shwrs	rain shwrs	clear	clear	clear	some clouds	some clouds	some clouds	clear	clear	clear
km/h	ESE	ENE	NNW	NNW	NW	W	SW	SW	W	NNW	NNW	NNW	NNE	SE	ENE	SSW	SW	W	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.2	0.2	—	—	—	—	—	—	—	—	—
max °C	17	18	20	19	19	20	18	9	11	10	9	13	14	17	20	18	17	19	17
min °C	16	17	20	18	18	19	10	8	9	7	8	11	12	15	18	17	17	18	12
chill °C	16	17	20	18	18	19	7	5	7	6	6	10	12	15	18	17	17	18	11

Freezing level m	3700	4050	4200	4550	4500	4400	4200	4150	4000	3950	3800	4050	4350	4350	4450	4350	4300	4300	4150
Cloud base (m)	8950	9100		9250	6200	4850		650	700						6750	7000			9200

	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	—	9:05	—	—	9:05	—	—	9:06	—	—	9:06	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 20°C on Sun afternoon, min 8°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Thu afternoon, min 7°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. 56 minutes ago	16° C	Dry	Calm (0 kph at 203).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	11° C	-	Calm (0 kph at 155).
Renton 30 km WSW 160m alt. 1 hour ago	19° C	Dry	Calm (0 kph at 16).
Black Diamond 32 km SSW 192m alt. 44 minutes ago		-	Calm (2 kph at 0).
Pines wx 34 km WSW 77m alt. 2 hours ago		-	Calm (0 kph at 195).
Grotto wx 35 km NE 321m alt. 2 hours ago	18° C	Dry	Calm (3 kph at 71).
Renton Airport 36 km WSW 218m alt. 3 hours ago	21° C	Clear	Light winds from the NNW (6 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 344).
Auburn 39 km SW 119m alt. 41 minutes ago		-	Calm (0 kph at 41).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	16 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.