– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Sat 26 Sep Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sat 26 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Tue morning. Very mild (max 15°C on Sun afternoon, min 8°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 22mm), heaviest during Tue night. Very mild (max 18°C on Wed afternoon, min 11°C on Thu night). Wind will be generally light.
	Sat 26		Sunday 27			Monday 28			Tuesday 29			Wednesday 30			Thursday 1
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	clear	some clouds	some clouds	some clouds	rain shwrs	light rain	light rain	heavy rain	light rain	some clouds	clear	clear	rain shwrs	rain shwrs
Cloud base (m)		6600	5600				3050	2500	600	400	400	550	8900	9350		900	650
km/h	NNW	E	NNW	NW	E	WNW	SW	SSW	SW	WSW	WSW	S	NW	SE	SW	SW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	0.1	1.4	5	10	0.1	—	—	—	0.6	5
max °C	13	9	13	15	10	13	15	12	11	12	12	13	18	15	18	18	14
min °C	13	9	9	15	8	9	14	10	11	12	12	12	17	14	14	16	11
chill °C	13	9	8	15	8	9	14	8	9	10	11	12	17	14	14	16	10

Freezing level m	2400	2750	2750	2900	3000	2800	2600	3300	3250	3250	2900	3600	3700	3700	3500	3050	2800

	—	—	6:58	—	—	7:01	—	—	7:01	—	—	7:03	—	—	7:05	—	—
	6:57	—	—	6:54	—	—	6:52	—	—	6:51	—	—	6:49	—	—	6:46	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Tue morning. Very mild (max 15°C on Sun afternoon, min 8°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 22mm), heaviest during Tue night. Very mild (max 18°C on Wed afternoon, min 11°C on Thu 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 30 km WSW 160m alt. 46 minutes ago	12°C	Dry	Calm (2 kph at 355).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	14°C	Clear	Moderate winds from the NNW (20 kph at 340).	16 km
Auburn 39 km SW 119m alt. 54 minutes ago	15°C	Dry	Calm (0 kph at 231).
Monroe 44 km NW 80m alt. 2 hours ago	8°C	Dry	Calm (0 kph at 321).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	14°C	Clear	Light winds from the N (7 kph at 1).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	13°C	Dry and partly cloudy.	Light winds from the N (19 kph at 10).	16 km Low: few Mid: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	7°C	Dry	Calm (0 kph at 74).
Seattle 49 km WSW 100m alt. 1 hour ago		-

* 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.