– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 20 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 20 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 31°C on Wed afternoon, min 20°C on Mon morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 29°C on Thu afternoon, min 12°C on Fri night). Wind will be generally light.
	Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	clear	some clouds	clear	clear	clear	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)		6950		7200	6200	4950	5300	4600	6750	5000	6200
km/h	ESE	WNW	ESE	WNW	NW	ESE	NW	NW	E	W	W	SSW	WSW	WSW	SSW	WSW	W	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	26	27	25	27	30	26	27	31	26	27	29	24	20	24	20	18	22	19
min °C	20	27	20	24	29	21	24	30	21	23	28	16	17	23	12	15	21	12
chill °C	20	27	20	24	29	21	24	30	21	23	28	16	17	23	11	15	21	12

Freezing level m	4450	4450	4450	4450	4700	4650	4600	4650	4550	4250	4200	3950	3750	3850	3850	3700	3550	3750

	5:30	—	—	5:31	—	—	5:31	—	—	5:33	—	—	5:33	—	—	5:35	—	—
	—	—	8:54	—	—	8:53	—	—	8:52	—	—	8:52	—	—	8:51	—	—	8:50

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 31°C on Wed afternoon, min 20°C on Mon morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 29°C on Thu afternoon, min 12°C on Fri 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. 30 minutes ago	27° C	Dry	Calm (2 kph at 309).
Renton Airport 36 km WSW 218m alt. 2 hours ago	26° C	Clear	Light winds from the NNW (17 kph at 330).	16 km
Auburn 39 km SW 119m alt. 39 minutes ago	32° C	Dry	Calm (2 kph at 90).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	21° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 48 minutes ago	24° C	Clear	Light winds from the WNW (15 kph at 300).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	25° C	Dry and partly cloudy.	Light winds from the WNW (15 kph at 290).	16 km Low: few Mid: broken
Snohomish 49 km NW 196m alt. 1 hour ago	25° C	Dry	Wind obs. (6 kph from 182 degs) was rejected.
Seattle 49 km WSW 100m alt. 39 minutes ago	27° C	-	Calm (3 kph at 51).
BUOY-WPOW1 55 km W 3m alt. 41 minutes ago	17° C		Light winds from the N (8 kph at 10).
BUOY-TCNW1 57 km SW 3m alt. 53 minutes ago

* 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.