– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 17 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 17 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 5°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 13mm), heaviest on Wed morning. Warm (max 21°C on Mon afternoon, min 4°C on Wed night). Wind will be generally light.
	Fri 17		Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	cloudy	cloudy	some clouds	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	light rain	light rain	light rain	light rain	light rain
km/h	NNW	ESE	SE	E	ESE	ESE	E	E	E	WNW	ENE	WNW	WSW	SSW	WSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	—	—	—	—	—	—	0.2	1	4	2	4
max °C	9	7	12	16	12	17	19	15	19	21	16	15	16	12	8	7	5
min °C	8	5	8	14	10	12	19	12	15	20	13	12	15	8	7	7	4
chill °C	8	3	7	14	9	11	19	12	15	20	13	12	15	6	5	4	2

Freezing level m	1500	2200	2350	2600	2800	3000	3050	3200	3250	3300	3250	3300	3000	2250	1750	1550	1200
Cloud base (m)	850	4850	3400	3100		3450	3950	5750	4200		4950	600	1450	800	400	400	400

	—	—	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 5°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 13mm), heaviest on Wed morning. Warm (max 21°C on Mon afternoon, min 4°C on Wed 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. 57 minutes ago	8° C	Dry	Calm (0 kph at 334).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	2° C	-	Calm (2 kph at 75).
Renton 30 km WSW 160m alt. 46 minutes ago	11° C	Dry	Calm (0 kph at 343).
Grotto wx 35 km NE 321m alt. 30 minutes ago	8° C	Dry	Calm (0 kph at 276).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Clear	Light winds from the NW (11 kph at 320).	16 km
Grotto wx 39 km NE 1101m alt. 31 minutes ago	0° C	-	Calm (0 kph at 322).
Auburn 39 km SW 119m alt. 41 minutes ago	11° C	Dry	Calm (2 kph at 40).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Clear	Light winds from the N (6 kph at 1).	16 km
Woodinville 43 km WNW 137.2m alt. 58 minutes ago	7° C	Dry	Calm (3 kph at 163).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	Clear	Light winds from the WNW (7 kph at 300).	16 km

* 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.