– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 13 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 13 Jul 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 28°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Thu night. Warm (max 27°C on Thu afternoon, min 11°C on Sat night). Wind will be generally light.
	Mon 13		Tuesday 14			Wednesday 15			Thursday 16			Friday 17			Saturday 18
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	some clouds	rain shwrs	clear	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear
km/h	NW	E	WNW	NW	ESE	ENE	NW	E	SSE	W	W	W	W	SSE	W	W	NNE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.1	—	—	0.1	0.1	3	0.3	0.1	—	—	—	—
max °C	23	20	22	26	22	23	28	23	25	27	21	17	24	21	19	23	19
min °C	22	15	18	25	18	20	28	19	22	26	16	15	22	13	16	22	11
chill °C	22	15	18	25	18	20	28	19	22	26	16	15	22	13	16	22	11

Freezing level m	4050	4200	4300	4350	4300	3950	4200	4250	4350	4500	4550	4200	4300	4300	4050	3850	4050
Cloud base (m)					7200				8350			400	650

	—	—	5:22	—	—	5:24	—	—	5:24	—	—	5:26	—	—	5:26	—	—
	—	9:00	—	—	9:00	—	—	9:00	—	—	8:59	—	—	8:58	—	—	8:57

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 28°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Thu night. Warm (max 27°C on Thu afternoon, min 11°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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	19° C	Dry	Calm (0 kph at 339).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	19° C	-	Calm (0 kph at 26).
Renton 30 km WSW 160m alt. 2 hours ago	24° C	Dry	Calm (3 kph at 290).
Grotto wx 35 km NE 321m alt. 39 minutes ago	22° C	Dry	Calm (3 kph at 188).
Renton Airport 36 km WSW 218m alt. 3 hours ago	25° C	Clear	Light winds from the NNW (19 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	18° C	Dry	Calm (2 kph at 327).
Auburn 39 km SW 119m alt. 1 hour ago	28° C	Dry	Calm (0 kph at 165).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	19° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	24° C	Clear	Light winds from the WNW (15 kph at 300).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	24° C	-	Light winds from the NNW (13 kph at 340).	16 km Low: few Mid: few

* 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.