– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 30 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 30 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 5mm), mostly falling on Sat afternoon. Warm (max 25°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 27°C on Tue afternoon, min 9°C on Sun night). Wind will be generally light.
	Thu 30		Friday 31			Saturday 1			Sunday 2			Monday 3			Tuesday 4
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)						550	500	500	600	900							9600
km/h	W	E	WNW	WNW	S	SW	SW	SW	WNW	NNW	NNE	NW	NW	ESE	NW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.3	3	1.1	0.7	0.2	—	—	—	—	—	—	—
max °C	22	19	21	25	22	15	15	14	13	18	14	16	21	18	24	27	22
min °C	20	14	17	25	14	14	15	11	11	15	9	12	20	15	19	26	19
chill °C	20	14	17	25	14	13	15	11	11	15	9	12	20	15	19	26	19

Freezing level m	4100	4450	4450	4600	4350	3350	2900	3000	3150	2950	2850	3300	3600	3600	3650	4100	4250

	—	—	5:43	—	—	5:43	—	—	5:45	—	—	5:46	—	—	5:48	—	—
	—	8:44	—	—	8:42	—	—	8:40	—	—	8:39	—	—	8:37	—	—	8:37

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 5mm), mostly falling on Sat afternoon. Warm (max 25°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 27°C on Tue afternoon, min 9°C on Sun 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. 50 minutes ago	21° C	Dry	Calm (0 kph at 27).
Renton Airport 36 km WSW 218m alt. 2 hours ago	24° C	Clear	Light winds from the NNW (13 kph at 340).	16 km
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23° C	Clear	Light winds from the WNW (7 kph at 300).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	23° C	Dry and partly cloudy.	Light winds from the W (7 kph at 280).	16 km Low: few Mid: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 201).
Seattle 49 km WSW 100m alt. 1 hour ago	27° C	-
BUOY-WPOW1 55 km W 3m alt. 53 minutes ago	16° C		Light winds from the NE (17 kph at 50).
BUOY-TCNW1 57 km SW 3m alt. 1 hour 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.