– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 28 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 28 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 14mm), heaviest on Sat morning. Very mild (max 18°C on Fri afternoon, min 10°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 32mm), heaviest during Wed morning. Warm (max 20°C on Mon afternoon, min 9°C on Wed night). Wind will be generally light.
	Friday 28			Saturday 29			Sunday 30			Monday 31			Tuesday 1			Wednesday 2
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	mod. rain	rain shwrs	rain shwrs	light rain	cloudy	clear	clear	some clouds	clear	clear	some clouds	mod. rain	heavy rain	light rain	mod. rain
Cloud base (m)	450	800	600	400	450	750	700	1800			3450		9350	2450	600	400	400	600
km/h	WNW	W	SW	WSW	WSW	SSW	SW	NW	ENE	WNW	NW	E	WSW	WSW	SW	SW	SW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.3	0.2	1.5	8	3	1.1	0.1	—	—	—	—	—	—	—	8	14	2	8
max °C	13	18	15	10	14	13	12	14	14	17	20	15	16	19	14	12	12	11
min °C	13	16	10	10	11	10	10	13	11	13	19	12	13	19	11	11	11	9
chill °C	13	16	9	8	10	10	10	13	11	13	19	12	13	19	9	9	10	8

Freezing level m	3300	3200	2550	2200	2400	2700	3100	3300	3700	3600	3600	3550	3500	3300	2900	2400	2250	1950

	6:18	—	—	6:20	—	—	6:22	—	—	6:22	—	—	6:24	—	—	6:26	—	—
	—	7:54	—	—	7:52	—	—	7:51	—	—	7:49	—	—	7:46	—	—	7:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 14mm), heaviest on Sat morning. Very mild (max 18°C on Fri afternoon, min 10°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 32mm), heaviest during Wed morning. Warm (max 20°C on Mon afternoon, min 9°C on Wed 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. 3 hours ago	14°C	Dry	Calm (0 kph at 42).
Black Diamond 32 km SSW 192m alt. 45 minutes ago		-	Calm (3 kph at 145).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 2 hours ago	18°C	Dry	Calm (0 kph at 121).
Monroe 44 km NW 80m alt. 38 minutes ago		-	Calm (0 kph at 215).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Light winds from the SE (7 kph at 140).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	15°C	Dry and partly cloudy.	Light winds from the N (6 kph at 350).	16 km Low: few Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	13°C	Dry	Calm (0 kph at 240).
Seattle 49 km WSW 100m alt. 54 minutes ago	23°C	-

* 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.