– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Sat 10 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sat 10 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 41mm), heaviest during Mon afternoon. Very mild (max 15°C on Tue morning, min 5°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 13°C on Fri morning, min 6°C on Wed night). Wind will be generally light.
		Sunday 11			Monday 12			Tuesday 13			Wednesday 14			Thursday 15			Friday 16
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	mod. rain	heavy rain	light rain	mod. rain	rain shwrs	some clouds	some clouds	clear	some clouds	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear
km/h	S	S	SSW	SW	SW	SW	SSW	SE	WNW	SE	SW	NW	N	N	N	ESE	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	4	3	7	15	4	7	1	—	—	—	—	0.1	—	—	—	—	—	—	—
max °C	6	8	7	10	11	10	11	15	14	11	12	9	8	10	9	8	13	11	7
min °C	5	6	7	9	10	10	10	12	11	9	11	9	6	8	8	7	10	8	7
chill °C	2	4	5	7	8	9	8	12	11	9	10	9	5	7	8	6	10	7	6

Freezing level m	1500	1900	2450	2650	2600	2700	2900	3300	3600	3550	3100	2500	2950	3150	3350	3300	3450	3550	3700
Cloud base (m)	2100	800	450	450	450	450	650	750		9300		1000	600					9050

	—	7:52	—	—	7:50	—	—	7:50	—	—	7:50	—	—	7:48	—	—	7:48	—	—
	—	—	4:37	—	—	4:38	—	—	4:39	—	—	4:42	—	—	4:43	—	—	4:44	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 41mm), heaviest during Mon afternoon. Very mild (max 15°C on Tue morning, min 5°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 13°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. 33 minutes ago	7° C	Dry	Calm (0 kph at 93).
Black Diamond 32 km SSW 192m alt. 47 minutes ago	9° C	Dry	Wind obs. (16 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Light rain .	Light winds from the SSW (6 kph at 200).	16 km
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 317).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2° C	Light rain .	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	Light rain .	Calm (0 kph at 0).	8 km Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	7° C	Light rain .	Calm (0 kph at 0).	8 km Mid: broken High: overcast
Snohomish 49 km NW 196m alt. 40 minutes ago	6° C	Dry	Calm (2 kph at 71).
Seattle 49 km WSW 100m alt. 1 hour ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	8° C		Moderate winds from the S (21 kph at 170).

* 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.