– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Thu 22 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Thu 22 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Mild temperatures (max 8°C on Sun morning, min 1°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 11mm), heaviest on Wed afternoon. Mild temperatures (max 9°C on Tue morning, min 3°C on Sun night). Wind will be generally light.
		Friday 23			Saturday 24			Sunday 25			Monday 26			Tuesday 27			Wednesday 28
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	clear	clear	some clouds	clear	clear	cloudy	cloudy	light rain	light rain	rain shwrs	some clouds	cloudy	rain shwrs	light rain	light rain	light rain
km/h	ESE	ESE	ESE	E	SSE	NW	E	SE	S	S	SW	SSW	SE	SE	SE	S	S	S	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.1	2	0.2	—	—	4	0.3	4	5
max °C	1	7	5	2	7	6	3	8	6	4	5	4	5	9	8	6	8	7	6
min °C	1	4	1	1	6	3	2	5	3	3	5	3	4	6	6	4	6	5	5
chill °C	0	2	-1	-1	6	3	1	3	1	1	5	3	4	4	4	2	4	2	2

Freezing level m	950	1550	1500	1650	2000	2000	2100	2000	1900	1600	1150	1150	1500	2250	2100	1600	1600	1450	1550
Cloud base (m)	4100	7150						8700	6950	5250	2100	600	450	900	2800	450	1000	700	450

	—	7:43	—	—	7:41	—	—	7:41	—	—	7:39	—	—	7:39	—	—	7:37	—	—
	—	—	4:53	—	—	4:55	—	—	4:57	—	—	4:59	—	—	5:00	—	—	5:01	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 8°C on Sun morning, min 1°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 11mm), heaviest on Wed afternoon. Mild temperatures (max 9°C on Tue morning, min 3°C on Sun 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. 59 minutes ago	-2° C	-	Calm (0 kph at 359).
Black Diamond 32 km SSW 192m alt. 57 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	1° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	-4° C	-	Calm (0 kph at 175).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-8° C	Dry and cloudy.	Wind obs. (6 kph from 1 degs) was rejected.	11 km Low: overcast
SHIP6783 43 km W 15m alt. 2 hours ago				- km
SHIP8074 43 km W 15m alt. 5 hours ago				- km
SHIP4692 43 km W 3m alt. 1 hour ago
SHIP6131 43 km W 3m alt. 3 hours ago
SHIP7311 43 km W 15m alt. 3 hours ago				- 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.