– 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. Very mild (max 19°C on Sun afternoon, min 2°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 21°C on Mon afternoon, min 10°C on Tue night). 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

	rain shwrs	rain shwrs	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	SSW	WNW	NNW	ESE	SE	ENE	ESE	ESE	NW	E	E	W	ENE	NNW	NW	W	W	WSW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.5	0.2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.3	0.2
max °C	5	5	9	7	12	16	12	17	19	14	19	21	16	17	20	15	10	10	9
min °C	2	3	7	6	8	15	10	13	19	12	15	20	12	14	19	10	10	10	7
chill °C	1	3	7	5	7	15	9	12	19	12	15	20	12	14	19	10	10	9	7

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. Very mild (max 19°C on Sun afternoon, min 2°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 21°C on Mon afternoon, min 10°C on Tue 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. 54 minutes ago	6° C	Dry	Calm (0 kph at 326).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	1° C	-	Calm (0 kph at 110).
Renton 30 km WSW 160m alt. 1 hour ago	7° C	Dry	Calm (3 kph at 213).
Grotto wx 35 km NE 321m alt. 51 minutes ago	4° C	Dry	Calm (0 kph at 84).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11° C	Dry and partly cloudy.	Light winds from the WSW (15 kph at 240).	16 km Low: broken
Grotto wx 39 km NE 1101m alt. 49 minutes ago	-1° C	-	Calm (0 kph at 239).
Auburn 39 km SW 119m alt. 1 hour ago	15° C	Dry	Calm (0 kph at 282).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	-1° C	-	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 50 minutes ago	1° C	-	Calm (0 kph at 121).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	10° C	Dry and partly cloudy.	Light winds from the SW (9 kph at 220).	16 km Low: 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.