– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Tue 29 Sep Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Tue 29 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 11mm), heaviest on Tue afternoon. Very mild (max 14°C on Wed afternoon, min 10°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light.
	Tue 29		Wednesday 30			Thursday 1			Friday 2			Saturday 3			Sunday 4
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	rain shwrs	rain shwrs	rain shwrs	some clouds	cloudy	cloudy	light rain	light rain	clear	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)	400	400	850	4950	3050	2350	1800	950	500	600				9350		9300
km/h	WSW	WSW	NW	NW	SE	SSW	SW	SW	WNW	NW	E	E	N	ESE	ESE	WNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	8	3	0.2	0.1	—	—	—	0.1	0.1	—	—	—	—	—	—	—	—
max °C	13	12	12	14	12	13	14	14	13	16	13	18	20	16	21	23	17
min °C	13	10	10	14	11	12	14	12	12	15	12	13	20	15	15	21	14
chill °C	11	9	10	14	11	12	14	12	12	15	12	13	20	15	15	21	14

Freezing level m	3150	2850	3050	3250	3250	3300	3400	3200	3500	3550	3750	4050	4100	4200	4250	4150	3950

	—	—	7:03	—	—	7:05	—	—	7:05	—	—	7:07	—	—	7:09	—	—
	6:51	—	—	6:49	—	—	6:46	—	—	6:45	—	—	6:43	—	—	6:40	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 11mm), heaviest on Tue afternoon. Very mild (max 14°C on Wed afternoon, min 10°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Fri 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
Renton Airport 36 km WSW 218m alt. 2 hours ago	13°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	14°C	Light rain.	Calm (0 kph at 63).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9°C	Light rain .	Light winds from the W.(Wind varies from 140 to 300 degs) (15 kph at 260).	5 km Mid: broken High: overcast
Monroe 44 km NW 80m alt. 44 minutes ago	17°C	Dry	Calm (0 kph at 124).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13°C	Haze -.	Calm (0 kph at 0).	8 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13°C	Dry and cloudy.	Light winds from the NE (17 kph at 50).	16 km Low: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 80).
Seattle 49 km WSW 100m alt. 36 minutes ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	13°C		Calm (5 kph at 90).

* 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.