– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Thu 05 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Thu 05 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 26mm), heaviest during Sat afternoon. Very mild (max 18°C on Thu morning, min 4°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 12mm), heaviest on Sun night. Mild temperatures (max 8°C on Tue afternoon, min 2°C on Mon night). Wind will be generally light.
	Thursday 5			Friday 6			Saturday 7			Sunday 8			Monday 9			Tuesday 10
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	heavy rain	rain shwrs	cloudy	light rain	mod. rain	light rain	light rain	light rain	cloudy	clear	clear
km/h	ESE	SE	SSE	SW	SW	S	SSW	S	SW	S	WNW	SW	SW	SW	SSE	SE	E	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	2	13	10	—	0.1	7	3	1.9	0.1	—	—	—
max °C	18	16	10	15	13	9	11	8	8	6	5	4	4	4	3	7	8	3
min °C	15	11	10	13	10	9	8	8	4	6	4	3	4	4	2	5	4	2
chill °C	14	10	9	13	10	8	6	6	3	6	4	1	2	2	1	5	2	-1

Freezing level m	3800	3700	3200	2800	2650	2300	2200	2100	1550	1450	1350	1000	1100	1100	1050	1400	1500	1550
Cloud base (m)			7000	6150	6900	3100	3050	600	450	1550	2000	450	450	450	550	2650	2350	450

	7:26	—	—	7:26	—	—	7:24	—	—	7:22	—	—	7:20	—	—	7:20	—	—
	—	5:14	—	—	5:15	—	—	5:17	—	—	5:19	—	—	5:21	—	—	5:22	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 26mm), heaviest during Sat afternoon. Very mild (max 18°C on Thu morning, min 4°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 12mm), heaviest on Sun night. Mild temperatures (max 8°C on Tue afternoon, min 2°C on Mon 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	12° C	Dry	Calm (0 kph at 82).
Black Diamond 32 km SSW 192m alt. 50 minutes ago	20° C	Dry	Wind obs. (18 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Clear	Light winds from the NNE (6 kph at 20).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 311).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Freezing light rain freezing.	Wind obs. (9 kph from 1 degs) was rejected.	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	-	Calm (0 kph at 0).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	7° C	-	Light winds from the N (13 kph at 10).	16 km Low: few Mid: few
Snohomish 49 km NW 196m alt. 2 hours ago	11° C	Dry	Calm (3 kph at 334).
Seattle 49 km WSW 100m alt. 1 hour ago	9° C	-	Wind obs. (21 kph from 342 degs) was rejected.
SHIP4164 54 km W 15m alt. 2 hours ago			Light winds from the NW (8 kph at 320).	- 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.