– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 08 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 08 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 21°C on Wed afternoon, min 10°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 24°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.
	Wednesday 8			Thursday 9			Friday 10			Saturday 11			Sunday 12			Monday 13
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	some clouds	clear	clear	clear	some clouds	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear
km/h	WNW	WNW	N	NW	NW	N	W	W	WSW	SW	W	ESE	WNW	NW	E	WNW	WNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	0.4	0.5	0.1	—	—	—	—	—	—	—	—
max °C	17	21	18	17	21	18	15	18	16	13	17	15	17	21	18	20	24	21
min °C	14	19	10	13	20	12	14	18	11	10	14	9	13	20	12	16	23	16
chill °C	14	19	10	13	20	12	14	18	10	9	14	9	13	20	12	16	23	16

Freezing level m	3700	3800	3900	3850	3750	3650	3400	3500	3350	2750	3150	3450	3550	3600	3700	4150	4250	4500
Cloud base (m)	550	1800		9400		3450	700	1550	900	700	6900

	5:18	—	—	5:18	—	—	5:20	—	—	5:20	—	—	5:20	—	—	5:22	—	—
	—	—	9:05	—	—	9:04	—	—	9:02	—	—	9:02	—	—	9:01	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 21°C on Wed afternoon, min 10°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Mon afternoon, min 9°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. 2 hours ago	17° C	Dry	Calm (0 kph at 119).
Snoqualmie Pass 30 km ESE 824m alt. 34 minutes ago	20° C	-	Calm (0 kph at 266).
Renton 30 km WSW 160m alt. 2 hours ago	16° C	Dry	Calm (2 kph at 216).
Grotto wx 35 km NE 321m alt. 3 hours ago	15° C	Dry	Calm (2 kph at 207).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Dry and cloudy.	Light winds from the S (9 kph at 180).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 2 hours ago	13° C	Dry	Calm (2 kph at 26).
Auburn 39 km SW 119m alt. 32 minutes ago		-	Calm (0 kph at 268).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	12° C	Dry and cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: scattered Mid: overcast
SHIP5101 43 km W 15m alt. 2 hours ago			Light winds from the W (13 kph at 280).	- km
Woodinville 43 km WNW 137.2m alt. 2 hours ago	20° C	Dry	Wind obs. (11 kph from 288 degs) was rejected.

* 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.