– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Mon 27 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Mon 27 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Sat night. Warm (max 25°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.
	Monday 27			Tuesday 28			Wednesday 29			Thursday 30			Friday 31			Saturday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	rain shwrs	light rain	rain shwrs	some clouds	clear	clear	clear	some clouds	clear	clear	clear	clear	clear	rain shwrs	rain shwrs
Cloud base (m)	1600	3000		850	1550	1600	500				6000						2000	700
km/h	W	W	S	SW	WNW	WNW	W	WNW	ESE	W	W	ESE	WNW	NW	SE	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.1	0.2	0.4	—	—	—	—	—	—	—	—	—	—	0.1	1.6
max °C	19	23	20	17	19	16	16	22	18	19	22	19	21	25	21	20	21	15
min °C	15	22	13	15	18	12	13	21	13	15	21	14	17	24	15	16	19	10
chill °C	15	22	13	15	18	12	13	21	13	15	21	14	17	24	15	16	19	9

Freezing level m	3300	3600	3700	3550	3650	3900	3950	4000	4200	4050	4050	4300	4450	4700	4650	4050	3350	2900

	5:37	—	—	5:39	—	—	5:39	—	—	5:41	—	—	5:43	—	—	5:43	—	—
	—	—	8:47	—	—	8:45	—	—	8:45	—	—	8:44	—	—	8:42	—	—	8:40

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Sat night. Warm (max 25°C on Fri afternoon, min 10°C on Sat 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. 2 hours ago	15° C	Dry	Calm (0 kph at 104).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Dry and cloudy.	Light winds from the S (7 kph at 190).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	27° C	Dry	Calm (0 kph at 119).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16° C	Dry and partly cloudy.	Light winds from the S (13 kph at 170).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16° C	Dry and partly cloudy.	Light winds from the S (11 kph at 170).	16 km Low: broken Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	15° C	Dry	Calm (2 kph at 225).
Seattle 49 km WSW 100m alt. 1 hour ago		-	Wind obs. (8 kph from 312 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	15° C		Fresh winds from the S (32 kph at 170).

* 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.