– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 22 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 22 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A dusting of snow turning to light rain (total 10mm) on Wed morning. Freeze-thaw conditions (max 6°C on Fri afternoon, min 0°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 4mm), mostly falling on Sun night. Mild temperatures (max 7°C on Sat afternoon, min 4°C on Sat night). Wind will be generally light.
	Wednesday 22			Thursday 23			Friday 24			Saturday 25			Sunday 26			Monday 27
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	light rain	light rain	cloudy	some clouds	some clouds	clear	some clouds	some clouds	clear	some clouds	rain shwrs	some clouds	rain shwrs	rain shwrs	rain shwrs	light rain	rain shwrs
km/h	WSW	WSW	SW	W	WNW	NE	ESE	NNW	SSE	NNE	NE	ESE	SSE	NNE	WNW	WNW	WNW	NNW
See all weather maps
cm	3	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	5	4	0.6	—	—	—	—	—	—	—	—	0.5	—	0.7	1.4	0.1	1.5	0.3
max °C	2	3	2	1	3	3	5	6	6	6	7	5	6	6	5	4	7	6
min °C	2	2	0	0	2	2	4	6	4	5	6	4	5	5	4	4	6	4
chill °C	-2	-2	-4	-4	-1	2	2	5	4	5	6	0	2	3	4	4	4	3

Freezing level m	1750	1750	1350	1450	1900	1700	2000	2100	1950	1950	2000	1950	1900	2000	1900	1850	2150	2100
Cloud base (m)	400	400	450	500	750	1550		1900		3300	2650	2700	3050	2250	2350	1900	1850	2000

	6:05	—	—	6:03	—	—	6:01	—	—	6:00	—	—	5:58	—	—	5:56	—	—
	—	—	8:05	—	—	8:07	—	—	8:07	—	—	8:09	—	—	8:10	—	—	8:12

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of snow turning to light rain (total 10mm) on Wed morning. Freeze-thaw conditions (max 6°C on Fri afternoon, min 0°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Sun night. Mild temperatures (max 7°C on Sat afternoon, min 4°C on Sat 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. 56 minutes ago	13° C	Dry	Calm (0 kph at 333).
Snoqualmie Pass 30 km ESE 824m alt. 51 minutes ago	7° C	-	Calm (0 kph at 101).
Renton 30 km WSW 160m alt. 2 hours ago	9° C	Dry	Calm (3 kph at 211).
Grotto wx 35 km NE 321m alt. 53 minutes ago	10° C	Dry	Calm (3 kph at 200).
Renton Airport 36 km WSW 218m alt. 1 hour ago	11° C	Dry and cloudy.	Light winds from the S (13 kph at 180).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	5° C	Dry	Calm (2 kph at 78).
Auburn 39 km SW 119m alt. 1 hour ago		-	Wind obs. (10 kph from 269 degs) was rejected.
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	3° C	Light rain .	Light winds from the WSW.(Wind varies from 200 to 050 degs) (13 kph at 250).	3 km Mid: few High: broken
SHIP6859 43 km W 3m alt. 3 hours ago	11° C		Calm (5 kph at 160).
Woodinville 43 km WNW 137.2m alt. 1 hour ago	10° C	Dry	Wind obs. (24 kph from 298 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.