– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Thu 18 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 18 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 Fri afternoon, min 10°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 27°C on Mon afternoon, min 14°C on Tue night). Wind will be generally light.
		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds
km/h	ESE	W	WNW	SSW	WSW	W	ENE	WNW	NW	ENE	W	NW	ESE	WNW	NW	E	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	20	22	25	22	16	20	18	17	22	20	24	27	23	25	26	23	17	18	15
min °C	16	19	25	12	14	19	10	14	20	15	20	26	19	22	25	14	15	18	9
chill °C	16	19	25	11	14	19	10	14	20	15	20	26	19	22	25	14	15	18	8

Freezing level m	4050	3950	4050	3950	3650	3650	3650	3400	3650	3650	3700	4000	3950	3900	4150	3800	3550	3350	3150
Cloud base (m)	7150	5350	5200								8950	9050	3700	6450	6250	6450		6550	550

	—	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 27°C on Mon afternoon, min 14°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. 47 minutes ago	12° C	Dry	Calm (0 kph at 333).
Snoqualmie Pass 30 km ESE 824m alt. 51 minutes ago	12° C	-	Calm (0 kph at 44).
Renton 30 km WSW 160m alt. 49 minutes ago	18° C	Dry	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 2 hours ago	17° C	Dry	Calm (0 kph at 191).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21° C	Clear	Light winds from the N (13 kph at 0).	16 km
Auburn 39 km SW 119m alt. 49 minutes ago	22° C	Dry	Calm (0 kph at 259).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km
SHIP4972 42 km WSW 15m alt. 3 hours ago			Light winds from the NNW (17 kph at 340).	- km
SHIP2412 42 km WSW 15m alt. 3 hours ago			Light winds from the NNW (17 kph at 340).	- km
SHIP1594 42 km WSW 15m alt. 3 hours ago			Light winds from the NNW (17 kph at 340).	- 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.