– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Mon 24 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Mon 24 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 27mm), heaviest during Tue afternoon. Mild temperatures (max 7°C on Wed morning, min 2°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 22mm), heaviest during Thu afternoon. Freeze-thaw conditions (max 8°C on Thu morning, min -1°C on Sat night). Winds decreasing (fresh winds from the SW on Thu night, calm by Fri afternoon).
	Monday 24			Tuesday 25			Wednesday 26			Thursday 27			Friday 28			Saturday 29
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	rain shwrs	light rain	heavy rain	mod. rain	light rain	light rain	rain shwrs	rain shwrs	mod. rain	rain shwrs	light rain	light rain	mod. rain	light rain	cloudy	clear
km/h	SW	SW	ESE	SE	SSE	S	SSE	SE	SSE	SE	SSE	SW	SW	S	ESE	NE	NNE	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.7	1.3	0.2	2	13	5	0.2	0.6	2	0.7	6	5	0.6	2	5	1.3	—	—
max°C	4	3	3	4	3	6	7	6	6	8	6	6	6	5	4	3	2	1
min°C	4	3	2	3	3	4	6	6	6	6	6	5	5	4	3	3	1	-1
chill°C	2	1	2	0	1	2	5	5	4	4	4	0	3	4	3	3	1	-3

Freezing level (m)	1000	950	850	1350	1300	1750	2100	2000	2250	2100	1850	1250	1300	1250	1100	1050	850	450
Cloud base (m)	550	550	600	2500	700	450	550	650	550	700	700	450	600	450	400	400	450	400

	7:24	—	—	7:26	—	—	7:26	—	—	7:28	—	—	7:30	—	—	7:31	—	—
	—	4:22	—	—	4:21	—	—	4:20	—	—	4:20	—	—	4:19	—	—	4:17	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 27mm), heaviest during Tue afternoon. Mild temperatures (max 7°C on Wed morning, min 2°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 22mm), heaviest during Thu afternoon. Freeze-thaw conditions (max 8°C on Thu morning, min -1°C on Sat night). Winds decreasing (fresh winds from the SW on Thu night, calm by Fri afternoon).

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. 56 minutes ago	5° C	Dry	Calm (0 kph at 313).
Black Diamond 32 km SSW 192m alt. 2 hours ago	14° C	Dry	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Dry and cloudy.	Light winds from the SE (6 kph at 130).	16 km Low: few Mid: overcast
Auburn 39 km SW 119m alt. 2 hours ago	11° C	Dry	Calm (2 kph at 49).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-2° C	Dry and partly cloudy.	Wind obs. (9 kph from 1 degs) was rejected.	16 km Low: broken
SHIP8147 42 km WSW 3m alt. 3 hours ago
SHIP558 42 km WSW -m alt. 3 hours ago	5° C	-	Light winds from the SE (9 kph at 130).
SHIP8801 42 km WSW 15m alt. 2 hours ago				- km
SHIP8767 42 km WSW 3m alt. 2 hours ago	6° C		Light winds from the SE (11 kph at 140).
SHIP3681 42 km WSW 15m alt. 2 hours ago			Light winds from the SE (13 kph at 130).	- 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.