– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sun 23 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sun 23 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 27°C on Tue afternoon, min 14°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Wed afternoon, min 11°C on Thu night). Wind will be generally light.
	Sun 23		Monday 24			Tuesday 25			Wednesday 26			Thursday 27			Friday 28
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	rain shwrs	rain shwrs	some clouds	clear	clear	clear
Cloud base (m)	900						4550		9650		9550	500	1750		700	8000
km/h	NW	NE	NNW	NNW	ESE	WSW	WSW	ESE	W	WSW	S	SW	W	SE	W	W	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	—	—	—	—	—	—	—	—	—	—	0.2	0.1	—	—	—	—
max °C	19	16	22	26	21	26	27	22	21	24	19	14	20	15	15	19	16
min °C	18	14	17	25	20	22	27	16	18	23	12	13	18	11	12	18	11
chill °C	18	14	17	25	20	22	27	16	18	23	12	13	18	11	12	18	11

Freezing level m	3600	4000	4000	4150	4200	4250	4300	4200	4050	4050	3750	3150	3350	3650	3400	3300	3250

	—	—	6:13	—	—	6:15	—	—	6:16	—	—	6:18	—	—	6:18	—	—
	—	8:05	—	—	8:02	—	—	8:00	—	7:59	—	—	7:57	—	—	7:54	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 27°C on Tue afternoon, min 14°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°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. 1 hour ago	19°C	Dry	Calm (0 kph at 329).
Black Diamond 32 km SSW 192m alt. 52 minutes ago		-	Wind obs. (10 kph from 247 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	22°C	Clear	Light winds from the N (11 kph at 350).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	26°C	Dry	Calm (0 kph at 322).
Monroe 44 km NW 80m alt. 2 hours ago	12°C	Dry	Calm (0 kph at 49).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	22°C	Dry and partly cloudy.	Light winds from the N (7 kph at 1).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	21°C	Dry and partly cloudy.	Light winds from the WNW (11 kph at 300).	16 km Low: few Mid: scattered
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 2 hours ago	20°C	Dry	Calm (0 kph at 229).
Seattle 49 km WSW 100m alt. 1 hour ago	31°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.