– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Thu 16 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 16 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 13°C on Sun afternoon, min -3°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 15°C on Mon afternoon, min 4°C on Wed afternoon). Wind will be generally light.
		Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	cloudy	some clouds	clear	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	light rain	light rain
km/h	SW	NE	NE	SE	SE	E	SE	ESE	SE	NE	ESE	W	N	NNE	N	NW	WSW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.3	0.2
max °C	-1	-2	2	4	6	9	10	12	13	12	14	15	12	14	14	11	6	5	4
min °C	-3	-3	0	3	5	8	9	11	12	10	13	14	10	12	14	7	5	4	3
chill °C	-9	-3	0	1	3	7	8	9	11	10	12	14	10	12	14	5	3	1	0

Freezing level m	850	1050	1500	2250	2350	2600	2700	2850	3000	3150	3200	3150	3250	3250	3300	3100	2800	2650	2450
Cloud base (m)	550	450	750	5350	5650		2850	3050	3350	6100	5550	5700	6200	6100	5300	4500	450	500	550

	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—	6:05	—	—
	—	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04	—	—	8:05

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 13°C on Sun afternoon, min -3°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 15°C on Mon afternoon, min 4°C on Wed afternoon). 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	6° C	Dry	Calm (0 kph at 5).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	1° C	-	Calm (0 kph at 138).
Renton 30 km WSW 160m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 79).
Grotto wx 35 km NE 321m alt. 57 minutes ago	3° C	Dry	Calm (0 kph at 115).
Renton Airport 36 km WSW 218m alt. 3 hours ago	8° C	Dry and cloudy.	Light winds from the ESE (6 kph at 120).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 41 minutes ago	-1° C	-	Calm (0 kph at 206).
Auburn 39 km SW 119m alt. 2 hours ago	8° C	Dry	Calm (0 kph at 281).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	-2° C	-	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 57 minutes ago	2° C	-	Wind obs. (11 kph from 292 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	7° C	Dry and partly cloudy.	Light winds from the SSE (13 kph at 150).	16 km Low: broken Mid: broken High: broken

* 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.