– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 29 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 29 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 9mm), mostly falling on Fri morning. Very mild (max 14°C on Sun afternoon, min 4°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 22°C on Tue afternoon, min 9°C on Wed afternoon). Wind will be generally light.
	Friday 29			Saturday 30			Sunday 31			Monday 1			Tuesday 2			Wednesday 3
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	light rain	rain shwrs	light rain	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	cloudy	light rain	light rain
km/h	SW	WSW	WNW	NW	NNW	NE	NW	NW	E	NW	NW	ESE	WNW	WNW	S	WSW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	8	0.6	0.1	0.1	0.1	—	—	—	—	—	—	—	—	—	—	—	0.6	1.4
max °C	9	9	8	9	12	10	10	14	12	16	20	17	19	22	19	14	14	9
min °C	7	7	5	6	10	4	7	13	8	12	19	12	16	22	12	13	9	9
chill °C	6	6	5	5	9	4	6	12	8	12	19	12	16	22	12	13	8	9

Freezing level m	2200	2000	1450	1450	2050	1950	1800	2700	2750	2800	3050	2950	3100	3400	3200	2700	2150	2100
Cloud base (m)	450	550	950	800	1000	2250		1850	8250	8750	8500	3000		9400	6250	2500	1650	400

	5:16	—	—	5:15	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:11	—	—
	—	—	8:52	—	—	8:53	—	—	8:54	—	—	8:55	—	—	8:57	—	—	8:57

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 9mm), mostly falling on Fri morning. Very mild (max 14°C on Sun afternoon, min 4°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 22°C on Tue afternoon, min 9°C on Wed afternoon). 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 200).
Snoqualmie Pass 30 km ESE 824m alt. 57 minutes ago	9° C	-	Calm (3 kph at 225).
Renton 30 km WSW 160m alt. 47 minutes ago	10° C	Dry	Calm (2 kph at 130).
Black Diamond 32 km SSW 192m alt. 47 minutes ago		-	Calm (5 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	10° C	Dry	Calm (5 kph at 232).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	-	Light winds from the S (9 kph at 180).	0.0 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	7° C	Dry	Calm (0 kph at 16).
Auburn 39 km SW 119m alt. 32 minutes ago		-	Calm (0 kph at 346).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	5° C	Light rain .	Calm (0 kph at 0).	0 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	12° C	Dry	Wind obs. (11 kph from 302 degs) was rejected.

* 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.