– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Sun 25 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sun 25 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 19mm), heaviest on Wed morning. Very mild (max 10°C on Tue morning, min 2°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 37mm), heaviest during Fri night. Very mild (max 11°C on Fri morning, min 6°C on Wed night). Wind will be generally light.
		Monday 26			Tuesday 27			Wednesday 28			Thursday 29			Friday 30			Saturday 31
	night	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	cloudy	cloudy	light rain	mod. rain	mod. rain	heavy rain	light rain	light rain	light rain	cloudy	cloudy	heavy rain	mod. rain	rain shwrs	some clouds
km/h	S	SSW	WSW	SSE	ESE	ESE	SSW	S	S	SSE	S	SSE	SSE	SSE	SE	S	SW	SW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	3	9	6	12	2	3	0.7	—	—	11	7	1.1	—
max °C	4	8	7	6	10	7	5	5	6	6	8	7	8	11	10	8	9	8	6
min °C	2	6	4	4	8	5	4	4	6	6	6	7	8	10	8	7	9	8	5
chill °C	0	5	3	3	6	3	2	1	4	4	4	6	7	10	6	4	6	6	3

Freezing level m	1800	1600	1500	1700	2300	2250	1350	1550	1650	1600	1900	2200	2350	2250	2300	2200	1950	1700	2100
Cloud base (m)	6050	2550	3150	2500	5050		1650	500	450	450	450	550	850	2500	3350	900	450	550

	—	7:39	—	—	7:39	—	—	7:37	—	—	7:35	—	—	7:35	—	—	7:33	—	—
	—	—	4:59	—	—	5:00	—	—	5:01	—	—	5:04	—	—	5:05	—	—	5:07	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 19mm), heaviest on Wed morning. Very mild (max 10°C on Tue morning, min 2°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 37mm), heaviest during Fri night. Very mild (max 11°C on Fri morning, min 6°C on Wed 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. 50 minutes ago	-2° C	-	Calm (0 kph at 339).
Black Diamond 32 km SSW 192m alt. 2 hours ago	6° C	Dry	Calm (3 kph at 244).
Renton Airport 36 km WSW 218m alt. 2 hours ago	-1° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 56 minutes ago	-4° C	-	Calm (0 kph at 344).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-7° C	Clear	Light winds from the ENE (6 kph at 70).	16 km
SHIP9856 43 km W 15m alt. 3 hours ago				- km
SHIP4352 43 km W 15m alt. 3 hours ago				- km
SHIP6890 43 km W 3m alt. 3 hours ago
SHIP2397 43 km W 15m alt. 2 hours ago				- km
SHIP10509 43 km W 15m alt. 3 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.