– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Mon 08 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Mon 08 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 144mm), heaviest during Wed afternoon. Very mild (max 11°C on Mon afternoon, min 5°C on Mon night). Mainly strong winds.											Days 5–7 Weather Summary Moderate rain (total 19mm), heaviest on Sat night. Very mild (max 12°C on Sat morning, min 7°C on Sat night). Wind will be generally light.
	Mon 8		Tuesday 9			Wednesday 10			Thursday 11			Friday 12			Saturday 13
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	heavy rain	heavy rain	some clouds	light rain	heavy rain	heavy rain	heavy rain	heavy rain	mod. rain	light rain	light rain	light rain	rain shwrs	rain shwrs	clear	light rain	mod. rain
km/h	WSW	WNW	SSW	SSE	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SW	S	SSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	13	26	—	1.7	18	23	26	31	6	1.3	0.9	2	2	0.8	—	0.2	8
max°C	11	10	7	7	11	11	10	11	9	8	9	10	10	9	12	10	9
min°C	11	5	6	6	7	11	9	9	8	8	8	9	9	8	10	8	7
chill°C	8	5	6	4	4	8	6	6	6	6	6	7	7	7	10	6	4

Freezing level (m)	2500	1550	1550	2050	2700	2650	2850	2450	2100	2000	2350	2250	2350	2600	2750	2400	1950
Cloud base (m)	400	400	850	2600	400	400	400	400	450	450	500	400	500	800	8850	6350	400

	—	—	7:41	—	—	7:43	—	—	7:43	—	—	7:45	—	—	7:46	—	—
	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 144mm), heaviest during Wed afternoon. Very mild (max 11°C on Mon afternoon, min 5°C on Mon night). Mainly strong winds.

Mount Si Weather (Days 3-6):

Moderate rain (total 19mm), heaviest on Sat night. Very mild (max 12°C on Sat morning, min 7°C on Sat 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 37 minutes ago	9° C	Dry	Calm (0 kph at 283).
Black Diamond 32 km SSW 192m alt. 30 minutes ago	9° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Light rain .	Light winds from the S (19 kph at 190).	14 km Low: broken Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago	1° C	-	Calm (0 kph at 91).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Moderate rain .	Light winds from the N (9 kph at 1).	1 km Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	Light rain .	Moderate winds from the SSW (22 kph at 200).	6 km Mid: scattered High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13° C	Light rain .	Fresh winds from the SSW (37 kph at 200).	13 km Low: broken Mid: overcast
Snohomish 49 km NW 196m alt. 1 hour ago	9° C	Dry	Wind obs. (6 kph from 150 degs) was rejected.
Seattle 49 km WSW 100m alt. 42 minutes ago	6° C	-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	9° C		Moderate winds from the NE (24 kph at 50).

* 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.