– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 07 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 07 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 Fri afternoon, min 12°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Wed afternoon. Warm (max 23°C on Tue afternoon, min 13°C on Mon night). Wind will be generally light.
	Fri 7		Saturday 8			Sunday 9			Monday 10			Tuesday 11			Wednesday 12
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	clear	clear	clear	clear	clear	clear	some clouds	clear	clear	clear	some clouds	light rain	rain shwrs	rain shwrs
Cloud base (m)			6850	8750		9650			9650	8100			9250	700	700	450
km/h	WNW	NE	NW	WNW	NE	NW	NW	N	NW	NW	NE	NW	NW	NNE	WNW	NW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.3	0.7	0.1
max °C	27	23	20	24	21	19	23	19	18	22	18	19	23	19	15	18	16
min °C	26	16	17	23	13	16	22	12	14	21	13	15	22	14	14	15	13
chill °C	26	16	17	23	13	16	22	12	14	21	13	15	22	14	14	15	13

Freezing level m	4600	4400	4300	4150	4250	4050	4000	4000	4050	4150	4200	4100	4050	4200	4150	4000	4100

	—	—	5:52	—	—	5:54	—	—	5:54	—	—	5:56	—	—	5:58	—	—
	—	8:31	—	—	8:30	—	—	8:29	—	—	8:27	—	—	8:25	—	—	8:23

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 27°C on Fri afternoon, min 12°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Wed afternoon. Warm (max 23°C on Tue afternoon, min 13°C on Mon 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. 29 minutes ago	30° C	Dry	Calm (0 kph at 332).
Black Diamond 32 km SSW 192m alt. 46 minutes ago		-	Calm (3 kph at 276).
Renton Airport 36 km WSW 218m alt. 2 hours ago	30° C	-	Light winds from the N (9 kph at 350).	11 km
Auburn 39 km SW 119m alt. 1 hour ago	34° C	Dry	Calm (3 kph at 242).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	23° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
SHIP2940 43 km W 3m alt. 3 hours ago	27° C
SHIP2093 43 km W 3m alt. 3 hours ago	27° C
SHIP839 43 km W 15m alt. 3 hours ago				- km
SHIP4209 43 km W 15m alt. 3 hours ago				- km
SHIP4599 43 km W 3m alt. 3 hours ago	27° 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.