– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 10 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 10 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 22°C on Tue afternoon, min 13°C on Mon night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 25°C on Fri afternoon, min 13°C on Sat night). Wind will be generally light.
	Mon 10		Tuesday 11			Wednesday 12			Thursday 13			Friday 14			Saturday 15
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	rain shwrs	clear	clear	clear	some clouds	some clouds	some clouds
Cloud base (m)	8150				9500	8350	2100			3500		3500		8250	7150	6700	6100
km/h	NW	NE	NW	NW	NNE	NW	NW	ENE	WNW	NW	SE	WNW	WNW	SSE	W	W	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.5	—	—	—	—	—	—
max °C	21	18	19	22	18	18	22	19	20	24	21	21	25	21	19	23	20
min °C	19	13	15	21	13	15	21	14	17	23	16	17	24	14	15	21	13
chill °C	19	13	15	21	13	15	21	14	17	23	16	17	24	14	15	21	13

Freezing level m	3900	4050	3900	3850	3850	3600	3600	3700	3600	3700	3700	3600	3700	3750	3700	3850	3950

	—	—	5:56	—	—	5:58	—	—	5:58	—	—	6:01	—	—	6:01	—	—
	—	8:27	—	—	8:25	—	—	8:23	—	—	8:22	—	—	8:21	—	—	8:19

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Tue afternoon, min 13°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Fri afternoon, min 13°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. 20 minutes ago	25° C	Dry	Calm (2 kph at 297).
Black Diamond 32 km SSW 192m alt. 43 minutes ago		-	Wind obs. (8 kph from 180 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	23° C	Clear	Light winds from the N (11 kph at 0).	14 km
Auburn 39 km SW 119m alt. 56 minutes ago	37° C	Dry	Calm (0 kph at 298).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	19° C	Clear	Wind obs. (13 kph from 220 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23° C	Clear	Light winds from the N (6 kph at 1).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	22° C	-	Light winds from the W (11 kph at 270).	16 km Low: few Mid: few High: broken
BUOY-EBSW1 46 km W 3m alt. 50 minutes ago
Snohomish 49 km NW 196m alt. 36 minutes ago	21° C	Dry	Wind obs. (11 kph from 216 degs) was rejected.
Seattle 49 km WSW 100m alt. 57 minutes 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.