– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Wed 15 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Wed 15 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A light covering of new snow on Wed night turning to drizzle on Thu night. Freeze-thaw conditions (max 14°C on Sat afternoon, min 0°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 22°C on Tue afternoon, min 10°C on Sat night). Wind will be generally light.
		Thursday 16			Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. snow	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	clear	some clouds
km/h	NW	NW	N	SW	NNW	NE	ESE	SE	E	ESE	E	NNW	ENE	NW	NW	E	NW	NNW	SSW
See all weather maps
cm	8	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.2	0.4	0.6	0.2	0.2	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	1	2	6	4	4	8	6	11	14	11	15	18	14	17	20	16	19	22	17
min °C	0	1	5	2	2	6	5	7	13	10	11	18	11	14	20	13	15	21	12
chill °C	-2	0	4	0	2	6	4	6	13	9	11	18	11	14	20	13	15	21	11

Freezing level m	600	800	1200	800	1000	1450	2250	2350	2450	2650	2700	2850	3000	3150	3200	3300	3300	3500	3250
Cloud base (m)	450	450	750	600	450	650	6100	5650		2700	3300	3250	6400	8900	8550				6900

	—	6:16	—	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—
	—	—	7:57	—	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A light covering of new snow on Wed night turning to drizzle on Thu night. Freeze-thaw conditions (max 14°C on Sat afternoon, min 0°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 22°C on Tue afternoon, min 10°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. 1 hour ago	4° C	Dry	Calm (0 kph at 141).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	-1° C	-	Calm (0 kph at 359).
Renton 30 km WSW 160m alt. 2 hours ago	2° C	-	Calm (0 kph at 122).
Grotto wx 35 km NE 321m alt. 36 minutes ago	2° C	-	Calm (3 kph at 242).
Renton Airport 36 km WSW 218m alt. 2 hours ago	3° C	Dry and cloudy.	Light winds from the SSE (7 kph at 160).	16 km Low: scattered Mid: overcast
Grotto wx 39 km NE 1101m alt. 39 minutes ago	-3° C	-	Calm (0 kph at 103).
Auburn 39 km SW 119m alt. 1 hour ago	2° C	-	Calm (0 kph at 330).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-4° C	Light snow.	Light winds from the WSW (9 kph at 240).	0 km
Woodinville 43 km WNW 137.2m alt. 53 minutes ago	-1° C	-	Calm (5 kph at 335).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	3° C	Dry and cloudy.	Light winds from the SE (11 kph at 130).	16 km Low: scattered Mid: overcast

* 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.