– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Sat 26 Sep Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Sat 26 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 15°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 37mm), heaviest during Thu afternoon. Very mild (max 16°C on Wed afternoon, min 7°C on Thu night). Wind will be generally light.
	Saturday 26			Sunday 27			Monday 28			Tuesday 29			Wednesday 30			Thursday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	some clouds	cloudy	clear	some clouds	some clouds	clear	cloudy	light rain	light rain	light rain	light rain	light rain	light rain	light rain	heavy rain	heavy rain
Cloud base (m)			6700	6100			8100		2450	900	550	400	400	650	850	750	400	400
km/h	NNW	NNW	E	NNW	NW	E	W	SW	SSW	SSW	SW	SW	SW	W	SE	SW	SW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	—	—	—	0.5	0.8	2	2	0.1	0.2	2	15	13
max °C	11	13	9	13	15	10	13	15	12	12	13	14	13	16	14	15	13	12
min °C	7	13	9	9	15	8	9	14	11	12	13	13	13	14	14	14	12	7
chill °C	7	12	9	9	15	8	9	14	10	11	12	12	12	14	14	14	11	6

Freezing level m	2000	2450	2750	2700	2750	2850	2800	2950	3350	3450	3300	3150	3200	3250	3100	3000	2750	1700

	6:58	—	—	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: Mostly dry. Very mild (max 15°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 37mm), heaviest during Thu afternoon. Very mild (max 16°C on Wed afternoon, min 7°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. 1 hour ago	8°C	Dry	Calm (0 kph at 35).
Black Diamond 32 km SSW 192m alt. 38 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	9°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 43 minutes ago	13°C	Dry	Calm (0 kph at 134).
Monroe 44 km NW 80m alt. 1 hour ago		-	Calm (0 kph at 217).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9°C	-	Light winds from the SSE (9 kph at 150).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	10°C	Dry and partly cloudy.	Light winds from the SSE (9 kph at 160).	16 km Low: scattered
BUOY-EBSW1 46 km W 3m alt. 47 minutes ago
Snohomish 49 km NW 196m alt. 35 minutes ago	11°C	Dry	Calm (5 kph at 145).
Seattle 49 km WSW 100m alt. 36 minutes 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.