– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Sat 17 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Sat 17 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 3mm), mostly falling on Sat morning. Very mild (max 12°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 16°C on Wed morning, min 6°C on Tue morning). Wind will be generally light.
	Saturday 17			Sunday 18			Monday 19			Tuesday 20			Wednesday 21			Thursday 22
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	clear	clear	some clouds	cloudy	cloudy	cloudy	some clouds	clear	clear	clear	clear	clear	some clouds	some clouds	cloudy	some clouds
Cloud base (m)	550	700		9350		5300	3850	3100	3400							5650	800
km/h	W	NNW	NE	N	N	ESE	WSW	W	ENE	N	N	ESE	S	W	SE	NW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	2	0.2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	11	10	8	10	12	9	11	11	8	11	13	10	16	16	12	11	12	8
min °C	10	10	5	5	12	9	8	11	6	6	13	10	10	15	10	9	11	6
chill °C	9	10	4	5	12	9	8	11	6	5	13	10	10	15	10	9	11	6

Freezing level m	2150	2150	2200	2800	3100	2800	2350	2200	2250	2550	2850	2950	3150	3050	3000	2750	2550	2250

	7:28	—	—	7:28	—	—	7:30	—	—	7:31	—	—	7:33	—	—	7:35	—	—
	—	6:15	—	—	6:14	—	—	6:12	—	—	6:09	—	—	6:07	—	—	6:06	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 3mm), mostly falling on Sat morning. Very mild (max 12°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Wed morning, min 6°C on Tue morning). 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
Renton Airport 36 km WSW 218m alt. 2 hours ago	14°C	Light rain .	Light winds from the S (15 kph at 180).	5 km Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 128).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	8°C	Clear	Calm (0 kph at 0).	16 km
Monroe 44 km NW 80m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 60).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	15°C	Dry and cloudy.	Moderate winds from the SSE (22 kph at 160).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13°C	Mist -.	Moderate winds from the SSW (20 kph at 200).	8 km Low: scattered Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	13°C	Dry	Light winds from the SSW (8 kph at 202).
Seattle 49 km WSW 100m alt. 53 minutes ago	14°C	-	Wind obs. (13 kph from 355 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 55 minutes ago	15°C		Light winds from the SW (17 kph at 220).

* 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.