– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Sat 24 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sat 24 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 9°C on Tue morning, min 1°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 29mm), heaviest during Thu morning. Very mild (max 10°C on Fri morning, min 4°C on Tue night). Wind will be generally light.
		Sunday 25			Monday 26			Tuesday 27			Wednesday 28			Thursday 29			Friday 30
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	cloudy	rain shwrs	some clouds	cloudy	cloudy	light rain	light rain	light rain	mod. rain	mod. rain	light rain	mod. rain	light rain	light rain	rain shwrs
km/h	ENE	SE	S	SSE	SW	S	SE	ESE	SSE	SSE	SSE	SSE	SSE	S	SSW	SSE	S	SSE	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.2	—	—	—	0.8	0.1	3	5	5	2	6	2	4	1.1
max °C	2	7	6	3	6	5	5	9	7	5	9	7	6	6	7	8	10	8	8
min °C	1	4	2	2	5	3	3	7	4	4	7	6	6	6	7	8	9	8	7
chill °C	-1	2	0	0	3	3	3	5	2	2	5	4	4	4	6	7	7	7	6

Freezing level m	1950	1800	1750	1700	1500	1200	1700	2250	2050	1550	1650	1600	1650	1750	1950	2250	2050	2000	2000
Cloud base (m)			8450		3250	1950	950	5500	5400	700	800	650	450	450	450	800	650	800	1550

	—	7:41	—	—	7:39	—	—	7:39	—	—	7:37	—	—	7:35	—	—	7:35	—	—
	—	—	4:57	—	—	4:59	—	—	5:00	—	—	5:01	—	—	5:04	—	—	5:05	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 9°C on Tue morning, min 1°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 29mm), heaviest during Thu morning. Very mild (max 10°C on Fri morning, min 4°C on Tue 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. 51 minutes ago	-4° C	-	Calm (0 kph at 51).
Black Diamond 32 km SSW 192m alt. 55 minutes ago		-	Wind obs. (8 kph from 236 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 3 hours ago	-3° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 49 minutes ago	-4° C	-	Calm (0 kph at 40).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-6° C	Clear	Calm (0 kph at 0).	16 km
SHIP3635 43 km W 15m alt. 2 hours ago				- km
SHIP5956 43 km W 15m alt. 1 hour ago				- km
SHIP4751 43 km W 3m alt. 2 hours ago
SHIP7504 43 km W 15m alt. 2 hours ago				- km
SHIP6381 43 km W 15m alt. 2 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.