– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Fri 26 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Fri 26 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 15mm), heaviest on Fri night. Mild temperatures (max 7°C on Sat afternoon, min 3°C on Fri night). Mainly fresh winds.									Days 4–6 Weather Summary Some drizzle, heaviest during Tue night. Mild temperatures (max 8°C on Mon afternoon, min 2°C on Wed night). Wind will be generally light.
	Friday 26			Saturday 27			Sunday 28			Monday 29			Tuesday 30			Wednesday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	rain shwrs	light rain	light rain	light rain	light rain	light rain	light rain	cloudy	light rain	light rain	cloudy	light rain	rain shwrs	light rain	light rain	light rain
km/h	SW	SW	SW	WSW	NW	WNW	SW	W	WNW	NW	WNW	WNW	WSW	WSW	SW	SSW	SW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	3	5	1.7	1.3	0.4	0.1	0.3	0.2	—	0.1	0.2	—	0.2	0.5	0.1	0.4	0.3
max °C	6	6	6	4	7	7	5	6	6	6	8	8	6	7	7	4	5	5
min °C	6	6	3	3	5	5	4	5	6	6	7	6	6	6	4	4	4	2
chill °C	1	2	-1	0	3	2	1	2	4	5	6	5	5	5	0	0	0	-1

Freezing level m	2400	2400	2000	1900	2350	2450	2500	2750	3400	3450	3350	3200	3050	3150	2750	2100	2150	1950
Cloud base (m)	400	450	750	1600	1650	1950	700	550	600	500	700	800	400	700	550	400	650	800

	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:13	—	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 15mm), heaviest on Fri night. Mild temperatures (max 7°C on Sat afternoon, min 3°C on Fri night). Mainly fresh winds.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Tue night. Mild temperatures (max 8°C on Mon afternoon, min 2°C on Wed night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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	16° C	Dry	Wind obs. (8 kph from 182 degs) was rejected.
Snoqualmie Pass 30 km ESE 824m alt. 47 minutes ago	16° C	-	Calm (0 kph at 186).
Renton 30 km WSW 160m alt. 1 hour ago	17° C	Dry	Light winds from the SW (6 kph at 220).
Grotto wx 35 km NE 321m alt. 1 hour ago	15° C	Dry	Calm (3 kph at 244).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Light rain .	Light winds from the S (17 kph at 190).	16 km Low: few Mid: scattered
Grotto wx 39 km NE 1101m alt. 1 hour ago	11° C	Dry	Calm (3 kph at 167).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 164).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	8° C	Dry and partly cloudy.	Wind obs. (11 kph from 1 degs) was rejected.	16 km Low: few Mid: broken High: broken
SHIP6847 42 km WSW 3m alt. 2 hours ago	17° C
SHIP2844 42 km WSW 15m alt. 3 hours ago				- km

* 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.