– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Tue 27 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Tue 27 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 45mm), heaviest during Tue night. Mild temperatures (max 7°C on Thu afternoon, min 4°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 14mm), heaviest on Sun night. Very mild (max 12°C on Sat morning, min 5°C on Mon afternoon). Wind will be generally light.
		Wednesday 28			Thursday 29			Friday 30			Saturday 31			Sunday 1			Monday 2
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	rain shwrs	light rain	heavy rain	mod. rain	light rain	light rain	light rain	rain shwrs	light rain	light rain	light rain	some clouds	cloudy	light rain	heavy rain	rain shwrs	rain shwrs	some clouds
km/h	SSE	SSW	S	SSE	SSE	SSE	SE	SSE	S	S	SSE	SSE	ESE	SE	SSE	SW	SW	WSW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	8	1	5	17	8	0.2	1.3	2	2	0.2	1	0.1	—	—	0.5	11	0.9	0.8	—
max °C	4	6	5	6	6	7	7	7	7	9	12	10	9	10	9	7	7	7	5
min °C	4	6	5	6	6	7	7	7	7	8	9	8	8	10	7	6	6	5	4
chill °C	3	5	3	4	4	6	6	5	6	8	8	6	6	9	6	2	4	5	4

Freezing level m	1450	1350	1450	1700	1700	1950	2150	1950	2000	2450	2300	2350	2500	2400	2000	1400	1250	1350	1500
Cloud base (m)	1750	500	600	450	450	600	450	900	650	950	1550	800	2450	3000	2550	450	600	850	5800

	—	7:37	—	—	7:35	—	—	7:35	—	—	7:33	—	—	7:31	—	—	7:31	—	—
	—	—	5:01	—	—	5:04	—	—	5:05	—	—	5:07	—	—	5:07	—	—	5:09	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 45mm), heaviest during Tue night. Mild temperatures (max 7°C on Thu afternoon, min 4°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 14mm), heaviest on Sun night. Very mild (max 12°C on Sat morning, min 5°C on Mon afternoon). 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
Renton Airport 36 km WSW 218m alt. 3 hours ago	8° C	Dry and cloudy.	Wind obs. (9 kph from 180 degs) was rejected.	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 155).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	-4° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	7° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	7° C	Dry and cloudy.	Light winds from the SE (11 kph at 130).	16 km Low: broken Mid: overcast
Snohomish 49 km NW 196m alt. 56 minutes ago	7° C	Dry	Calm (0 kph at 271).
SHIP6986 54 km W 15m alt. 3 hours ago			Light winds from the SE (13 kph at 140).	- km
SHIP6648 54 km W 15m alt. 2 hours ago			Calm (6 kph at 170).	- km
SHIP3689 54 km W 15m alt. 3 hours ago			Light winds from the SE (13 kph at 140).	- km
SHIP5735 54 km W 15m alt. 3 hours ago			Light winds from the SSE (12 kph at 160).	- 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.