– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 12 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 12 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 23°C on Mon afternoon, min 11°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 23°C on Fri afternoon, min 9°C on Wed night). Wind will be generally light.
	Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	WNW	WNW	E	WNW	NW	ESE	WNW	NW	SSW	W	W	S	NW	NW	NNE	WNW	NW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	15	19	16	19	23	20	20	23	20	19	22	19	15	21	18	17	23	20
min °C	11	18	11	15	22	14	17	23	13	15	21	9	12	19	11	14	21	14
chill °C	11	18	11	15	22	14	17	23	13	15	21	9	12	19	11	14	21	14

Freezing level m	3400	3650	3850	3900	4000	4000	4300	4350	4150	4050	4050	3750	3900	3950	3850	3950	4250	4400
Cloud base (m)									6300

	5:20	—	—	5:22	—	—	5:22	—	—	5:24	—	—	5:24	—	—	5:26	—	—
	—	—	9:01	—	—	9:00	—	—	9:00	—	—	9:00	—	—	8:59	—	—	8:58

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Mon afternoon, min 11°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Fri afternoon, min 9°C on Wed 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. 3 hours ago	22° C	Dry	Calm (0 kph at 325).
Snoqualmie Pass 30 km ESE 824m alt. 3 hours ago	22° C	-	Calm (0 kph at 346).
Renton 30 km WSW 160m alt. 3 hours ago	21° C	Dry	Calm (0 kph at 112).
Grotto wx 35 km NE 321m alt. 3 hours ago	20° C	Dry	Moderate winds from the W (23 kph at 270).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21° C	Clear	Light winds from the NNW (11 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	17° C	Dry	Calm (3 kph at 111).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 248).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	16° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
SHIP3989 43 km W 15m alt. 3 hours ago				- km
SHIP6061 43 km W 3m alt. 1 hour ago	19° 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.