– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Fri 24 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Fri 24 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Mild temperatures (max 8°C on Sun afternoon, min 3°C on Fri morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 10°C on Wed night, min 0°C on Mon night). Wind will be generally light.
	Friday 24			Saturday 25			Sunday 26			Monday 27			Tuesday 28			Wednesday 29
	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	clear	clear	rain shwrs	some clouds	cloudy	cloudy	cloudy	some clouds	rain shwrs	clear	clear	clear
km/h	N	NNW	N	NNW	NNW	NNW	NW	NW	SW	SSW	SW	SSW	SW	WSW	NNE	E	NNE	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.1	—	—	0.4	—	—	—	—	—	0.1	—	—	—
max °C	3	5	5	5	6	5	5	8	6	2	2	1	0	2	2	6	9	10
min °C	3	5	4	5	6	5	5	7	3	2	1	0	0	1	1	4	9	9
chill °C	0	2	2	5	4	5	3	4	-1	-2	-5	-6	-5	-3	-1	2	8	8

Freezing level m	1650	1900	1900	1850	2000	1950	1900	2150	1950	1500	1500	1250	1300	1500	1550	2300	2600	2900
Cloud base (m)					2500		3200	2550	2450	550	550	650	450	500	1550	1950	2300	9100

	6:01	—	—	6:00	—	—	5:58	—	—	5:56	—	—	5:54	—	—	5:52	—	—
	—	—	8:07	—	—	8:09	—	—	8:10	—	—	8:12	—	—	8:14	—	—	8:15

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 8°C on Sun afternoon, min 3°C on Fri morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 10°C on Wed night, min 0°C on Mon 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. 1 hour ago	17° C	Dry	Calm (0 kph at 344).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	12° C	-	Calm (0 kph at 347).
Renton 30 km WSW 160m alt. 1 hour ago	15° C	Dry	Calm (3 kph at 328).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (8 kph from 238 degs) was rejected.
Grotto wx 35 km NE 321m alt. 44 minutes ago	16° C	Dry	Wind obs. (8 kph from 293 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 3 hours ago	13° C	Clear	Light winds from the NNW (17 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 44 minutes ago	8° C	Dry	Calm (2 kph at 216).
Auburn 39 km SW 119m alt. 46 minutes ago	26° C	Dry	Calm (0 kph at 206).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	6° C	Clear	Light winds from the N (6 kph at 1).	16 km
Woodinville 43 km WNW 137.2m alt. 58 minutes ago	11° C	Dry	Wind obs. (13 kph from 120 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.