– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Wed 27 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Wed 27 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 6mm), mostly falling on Fri morning. Warm (max 22°C on Thu afternoon, min 5°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 3mm), mostly falling on Mon morning. Very mild (max 10°C on Sat afternoon, min 5°C on Sat morning). Wind will be generally light.
	Wednesday 27			Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	rain shwrs	light rain	light rain	rain shwrs	rain shwrs	light rain	some clouds	cloudy	light rain	light rain	light rain	cloudy	some clouds
km/h	NW	NW	E	W	NW	WSW	SW	SW	W	WNW	NW	WNW	NNW	NW	W	WSW	E	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.3	4	1.1	0.2	0.1	0.1	—	—	0.1	1	1.3	—	—
max °C	15	20	17	20	22	19	9	9	9	8	10	9	7	10	10	7	9	10
min °C	12	18	15	18	22	9	8	8	5	5	8	5	5	9	6	6	8	8
chill °C	12	18	15	18	22	7	7	7	5	4	7	5	4	8	6	5	8	8

Freezing level m	3750	3700	3800	3850	4000	3500	2200	2200	1400	1400	1700	1500	1400	1900	1800	1950	2250	2500
Cloud base (m)	600	2650	9100	9450		1600	400	500	500	500	850	1650	850	900	900	450	500	2100

	5:16	—	—	5:16	—	—	5:16	—	—	5:15	—	—	5:13	—	—	5:13	—	—
	—	—	8:51	—	—	8:52	—	—	8:52	—	—	8:53	—	—	8:54	—	—	8:55

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 6mm), mostly falling on Fri morning. Warm (max 22°C on Thu afternoon, min 5°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Mon morning. Very mild (max 10°C on Sat afternoon, min 5°C on Sat morning). 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	16° C	Dry	Calm (0 kph at 334).
Snoqualmie Pass 30 km ESE 824m alt. 49 minutes ago	15° C	-	Calm (0 kph at 276).
Renton 30 km WSW 160m alt. 2 hours ago	16° C	Dry	Calm (3 kph at 1).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (13 kph from 90 degs) was rejected.
Grotto wx 35 km NE 321m alt. 1 hour ago	12° C	Dry	Calm (2 kph at 256).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 200).
Auburn 39 km SW 119m alt. 2 hours ago	24° C	Dry	Calm (0 kph at 165).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	8° C	Dry and cloudy.	Wind obs. (9 kph from 1 degs) was rejected.	16 km Low: scattered Mid: broken High: overcast
Woodinville 43 km WNW 137.2m alt. 2 hours ago	13° C	Dry	Calm (3 kph at 323).

* 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.