– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Tue 14 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 14 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 8mm), mostly falling on Thu afternoon. Warm (max 20°C on Wed night, min 9°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 25°C on Mon afternoon, min 11°C on Fri night). Wind will be generally light.
		Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sunday 19			Monday 20
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	rain shwrs	rain shwrs	light rain	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	cloudy	some clouds
km/h	ENE	ENE	NNE	ENE	SW	WSW	SW	WSW	W	NW	NW	NW	N	ESE	NW	ESE	ESE	W	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.9	3	3	0.6	0.1	—	—	—	—	—	—	—	—	—	—	—
max °C	17	19	19	20	14	11	10	11	15	14	12	15	15	17	19	21	24	25	22
min °C	15	17	19	16	11	11	9	10	13	11	11	14	13	15	18	20	22	23	19
chill °C	15	17	19	16	11	10	9	10	13	11	10	14	12	15	18	20	22	23	19

Freezing level m	4150	4100	4200	4100	4050	4050	3850	3950	4150	4200	4050	4250	4450	4450	4500	4600	4750	4650	4550
Cloud base (m)	8000	6450	4900	4000	400	400	400	450									9200	6600	5650

	—	5:24	—	—	5:24	—	—	5:26	—	—	5:26	—	—	5:28	—	—	5:30	—	—
	—	—	—	9:00	—	—	8:59	—	—	8:58	—	—	8:57	—	—	8:55	—	—	8:54

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 8mm), mostly falling on Thu afternoon. Warm (max 20°C on Wed night, min 9°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Mon afternoon, min 11°C on Fri 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
Snoqualmie Pass 30 km ESE 824m alt. 3 hours ago	13° C	-	Calm (0 kph at 20).
Renton 30 km WSW 160m alt. 2 hours ago	16° C	Dry	Calm (0 kph at 59).
Grotto wx 35 km NE 321m alt. 3 hours ago	17° C	Dry	Calm (0 kph at 276).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	Clear	Light winds from the E (6 kph at 90).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	11° C	Dry	Calm (0 kph at 352).
Auburn 39 km SW 119m alt. 57 minutes ago		-	Calm (0 kph at 53).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	15° C	Clear	Wind obs. (6 kph from 210 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 3 hours ago	18° C	Dry	Calm (2 kph at 279).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	18° C	Clear	Wind obs. (7 kph from 340 degs) was rejected.	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16° C	Dry and partly cloudy.	Light winds from the W (9 kph at 270).	16 km Low: scattered

* 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.