– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 31 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 31 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 7mm), mostly falling on Sat afternoon. Warm (max 25°C on Fri afternoon, min 9°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 27°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light.
	Fri 31		Saturday 1			Sunday 2			Monday 3			Tuesday 4			Wednesday 5
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	light rain	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)			450	450	700	600	900				9100
km/h	WNW	S	SW	WSW	SW	WNW	NNW	ENE	WNW	NW	ESE	WNW	NW	ENE	WNW	NW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.7	4	1.4	0.5	0.3	—	—	—	—	—	—	—	—	—	—
max °C	25	22	14	17	15	13	16	14	17	22	18	23	26	22	24	27	23
min °C	24	13	14	14	10	11	15	9	13	21	15	19	25	17	20	26	17
chill °C	24	12	14	13	10	11	15	9	13	21	15	19	25	17	20	26	17

Freezing level m	4600	4250	3100	2650	2700	2650	2600	3400	3500	3650	3650	3700	4100	4300	4350	4500	4600

	—	—	5:43	—	—	5:45	—	—	5:46	—	—	5:48	—	—	5:48	—	—
	—	8:42	—	—	8:40	—	—	8:39	—	—	8:37	—	—	8:37	—	—	8:35

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 7mm), mostly falling on Sat afternoon. Warm (max 25°C on Fri afternoon, min 9°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 27°C on Wed afternoon, min 15°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. 52 minutes ago	28° C	Dry	Calm (2 kph at 205).
Black Diamond 32 km SSW 192m alt. 56 minutes ago		-	Wind obs. (8 kph from 260 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 3 hours ago	29° C	Clear	Light winds from the NNW (9 kph at 340).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	32° C	Dry	Calm (2 kph at 290).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	29° C	Clear	Light winds from the SW (7 kph at 220).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	28° C	-	Light winds from the N (7 kph at 1).	16 km Low: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 38 minutes ago	24° C	Dry	Wind obs. (8 kph from 149 degs) was rejected.
Seattle 49 km WSW 100m alt. 1 hour ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	20° C		Light winds from the NE (15 kph at 40).

* 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.