– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 15 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 15 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 14mm), heaviest on Sat afternoon. Very mild (max 13°C on Mon afternoon, min 4°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 4mm), mostly falling on Tue night. Very mild (max 16°C on Wed afternoon, min 8°C on Mon night). Wind will be generally light.
		Saturday 16			Sunday 17			Monday 18			Tuesday 19			Wednesday 20			Thursday 21
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	risk tstorm	rain shwrs	rain shwrs	rain shwrs	some clouds	cloudy	rain shwrs	light rain	light rain	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	some clouds	rain shwrs	rain shwrs
km/h	SSW	WSW	NNW	N	NW	NW	ESE	WNW	NW	W	WSW	W	NW	NNW	NW	WNW	NW	WNW	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	5	2	5	1.9	0.4	0.1	—	—	0.2	0.3	0.7	1.6	1.5	—	—	—	—	0.1	0.1
max °C	5	5	7	5	7	12	10	11	13	12	9	12	11	11	16	13	11	15	13
min °C	4	4	7	4	5	10	7	9	13	8	8	11	8	8	15	8	9	14	8
chill °C	1	2	6	2	4	10	7	9	13	8	8	11	8	8	15	8	9	14	8

Freezing level m	1200	1150	1350	1150	1350	2100	2050	1850	2150	1900	2000	2150	2400	2700	3150	3000	3250	3100	2550
Cloud base (m)	600	450	700	450	550	9150		1550	1600	750	450	800	750	600	850	1650	700	700	550

	—	5:28	—	—	5:26	—	—	5:26	—	—	5:24	—	—	5:24	—	—	5:22	—	—
	—	—	—	8:37	—	—	8:38	—	—	8:39	—	—	8:42	—	—	8:43	—	—	8:44

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 14mm), heaviest on Sat afternoon. Very mild (max 13°C on Mon afternoon, min 4°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Tue night. Very mild (max 16°C on Wed afternoon, min 8°C on Mon 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. 2 hours ago	6° C	Dry	Calm (0 kph at 123).
Snoqualmie Pass 30 km ESE 824m alt. 45 minutes ago	2° C	-	Calm (0 kph at 272).
Renton 30 km WSW 160m alt. 1 hour ago	7° C	Dry	Calm (3 kph at 212).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 46 minutes ago	6° C	Dry	Calm (0 kph at 280).
Renton Airport 36 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the S (13 kph at 190).	16 km Low: broken
Auburn 39 km SW 119m alt. 2 hours ago	18° C	Dry	Calm (0 kph at 248).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Light snow.	Light winds from the N (7 kph at 1).	0 km
Woodinville 43 km WNW 137.2m alt. 51 minutes ago	3° C	Dry	Wind obs. (6 kph from 262 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the SSE (11 kph at 160).	16 km Low: broken Mid: broken High: overcast

* 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.