– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Sat 22 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Sat 22 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 28mm), heaviest during Sat night. Mild temperatures (max 9°C on Sat afternoon, min 2°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 79mm), heaviest during Wed afternoon. Mild temperatures (max 7°C on Thu morning, min 3°C on Tue afternoon). Winds increasing (light winds from the SE on Tue afternoon, fresh winds from the SW by Thu morning).
	Sat 22		Sunday 23			Monday 24			Tuesday 25			Wednesday 26			Thursday 27
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	mod. rain	mod. rain	light rain	light rain	light rain	light rain	light rain	some clouds	light rain	heavy rain	heavy rain	heavy rain	mod. rain	heavy rain	light rain	mod. rain
km/h	SW	SSW	WSW	SW	SW	SW	SW	SSW	ESE	SE	SSE	SSE	SSW	SSE	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.2	8	8	4	4	0.2	3	0.7	—	0.5	16	14	14	10	10	2	9
max°C	9	8	7	7	3	4	3	3	6	5	5	6	6	6	7	6	5
min°C	8	7	7	5	2	3	3	2	4	3	3	5	6	6	6	5	4
chill°C	6	5	5	3	-1	1	3	2	3	1	0	3	3	3	2	2	1

Freezing level (m)	2050	1850	1700	1600	900	850	950	900	1100	1600	1800	2150	2200	2050	1700	1400	1200
Cloud base (m)	650	400	400	400	600	500	650	450	450	2400	400	400	400	450	450	450	450

	—	—	7:22	—	—	7:24	—	—	7:26	—	—	7:26	—	—	7:28	—	—
	4:22	—	—	4:22	—	—	4:22	—	—	4:21	—	—	4:20	—	—	4:20	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Sat night. Mild temperatures (max 9°C on Sat afternoon, min 2°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 79mm), heaviest during Wed afternoon. Mild temperatures (max 7°C on Thu morning, min 3°C on Tue afternoon). Winds increasing (light winds from the SE on Tue afternoon, fresh winds from the SW by Thu morning).

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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	12° C	Dry	Calm (0 kph at 24).
Black Diamond 32 km SSW 192m alt. 1 hour ago	12° C	Dry	Wind obs. (6 kph from 236 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Dry and cloudy.	Light winds from the S (13 kph at 170).	16 km Low: few Mid: broken High: overcast
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	4° C	Mist -.	Wind obs. (6 kph from 1 degs) was rejected.	1 km
SHIP9008 42 km WSW 15m alt. 3 hours ago			Light winds from the SE (12 kph at 140).	- km
SHIP3686 42 km WSW 15m alt. 3 hours ago			Light winds from the SSE (10 kph at 160).	- km
SHIP8040 42 km WSW 15m alt. 2 hours ago			Light winds from the SSE (13 kph at 160).	- km
SHIP404 42 km WSW -m alt. 2 hours ago	12° C	-	Light winds from the SSE (13 kph at 150).
SHIP3843 42 km WSW 15m alt. 2 hours ago			Light winds from the SSE (15 kph at 160).	- km
SHIP4710 42 km WSW 15m alt. 3 hours ago			Light winds from the SE (12 kph at 140).	- 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.