– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Thu 29 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Thu 29 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 25mm), heaviest during Sun morning. Very mild (max 12°C on Sat morning, min 6°C on Sun morning). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 6mm), mostly falling on Mon night. Very mild (max 15°C on Wed morning, min 5°C on Sun night). Wind will be generally light.
		Friday 30			Saturday 31			Sunday 1			Monday 2			Tuesday 3			Wednesday 4
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	light rain	light rain	light rain	some clouds	some clouds	mod. rain	light rain	light rain	light rain	cloudy	light rain	some clouds	cloudy	some clouds	some clouds	some clouds	clear
km/h	SSE	S	SSW	S	SE	SE	SE	S	SSW	SSW	SSW	SSE	SSW	ESE	ESE	ESE	SSE	WNW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	4	3	5	0.3	0.2	—	—	8	5	1.9	1	—	3	—	—	—	—	—	—
max °C	8	9	8	9	12	11	8	7	7	6	7	7	8	14	12	9	15	13	11
min °C	7	8	7	9	10	8	7	6	7	5	5	6	7	11	10	8	12	11	11
chill °C	5	6	4	9	9	6	6	4	5	3	3	5	6	11	9	7	12	11	11

Freezing level m	2350	2050	2100	2350	2500	2450	2500	1550	1650	1400	1350	1550	2150	2750	3100	3200	3150	3000	3450
Cloud base (m)	450	2450	600	800	2000	5000	5400	1550	400	850	550	500	500	550	6250	5700	5900	5050	8250

	—	7:35	—	—	7:33	—	—	7:31	—	—	7:31	—	—	7:30	—	—	7:28	—	—
	—	—	5:05	—	—	5:07	—	—	5:07	—	—	5:09	—	—	5:10	—	—	5:13	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 25mm), heaviest during Sun morning. Very mild (max 12°C on Sat morning, min 6°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 6mm), mostly falling on Mon night. Very mild (max 15°C on Wed morning, min 5°C on Sun 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. 1 hour ago	11° C	Dry	Calm (0 kph at 40).
Black Diamond 32 km SSW 192m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 63).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	0° C	Moderate rain .	Wind obs. (6 kph from 1 degs) was rejected.	0 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the WNW (6 kph at 290).	16 km Low: broken Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Light rain .	Calm (0 kph at 0).	16 km Low: scattered Mid: scattered High: broken
Snohomish 49 km NW 196m alt. 2 hours ago	10° C	Dry	Calm (2 kph at 43).
SHIP2497 54 km W 15m alt. 2 hours ago				- km
SHIP7535 54 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.