– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sat 25 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sat 25 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 5mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Tue morning. Very mild (max 17°C on Thu afternoon, min 5°C on Tue morning). Wind will be generally light.
	Saturday 25			Sunday 26			Monday 27			Tuesday 28			Wednesday 29			Thursday 30
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	clear	some clouds	rain shwrs	rain shwrs	light rain	light rain	light rain	rain shwrs	some clouds	clear	clear	some clouds	some clouds	rain shwrs	rain shwrs
km/h	WNW	NNW	E	WNW	NW	S	SW	WSW	SW	SSW	WSW	NNE	NNW	NW	SE	WSW	WSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	4	0.1	0.2	0.7	0.9	0.4	—	—	—	—	—	0.1	0.1
max °C	11	13	10	12	14	9	7	9	7	6	8	7	11	15	12	14	17	11
min °C	8	12	6	9	13	6	6	8	6	5	7	5	8	15	10	12	16	6
chill °C	8	11	6	9	12	5	5	6	4	3	6	5	8	15	10	12	16	5

Freezing level m	1750	1950	1850	1900	2050	1900	1450	1550	1350	1300	1500	1550	2150	2650	2750	2600	2600	2300
Cloud base (m)		2150		2750	2450	2800	550	750	450	500	500	1500		2300		2600	1950

	6:00	—	—	5:58	—	—	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—
	—	—	8:09	—	—	8:10	—	—	8:12	—	—	8:14	—	—	8:15	—	—	8:16

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 5mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Tue morning. Very mild (max 17°C on Thu afternoon, min 5°C on Tue morning). 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	18° C	Dry	Calm (0 kph at 10).
Snoqualmie Pass 30 km ESE 824m alt. 45 minutes ago	13° C	-	Calm (0 kph at 185).
Renton 30 km WSW 160m alt. 48 minutes ago	14° C	Dry	Light winds from the N (6 kph at 0).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	14° C	Dry	Wind obs. (8 kph from 249 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	Clear	Light winds from the N (7 kph at 350).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	11° C	Dry	Calm (5 kph at 196).
Auburn 39 km SW 119m alt. 50 minutes ago	26° C	Dry	Calm (3 kph at 203).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	8° C	-	Calm (0 kph at 0).	16 km Low: few
SHIP8320 42 km WSW 3m alt. 2 hours ago	11° C		Light winds from the NW (11 kph at 320).

* 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.