– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 14 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 14 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 33mm), heaviest during Thu afternoon. Mild temperatures (max 9°C on Thu afternoon, min 4°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 5mm), mostly falling on Tue morning. Very mild (max 14°C on Mon afternoon, min 5°C on Sun night). Wind will be generally light.
	Thu 14		Friday 15			Saturday 16			Sunday 17			Monday 18			Tuesday 19
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	rain shwrs	light rain	mod. rain	light rain	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	rain shwrs	light rain	light rain	rain shwrs	rain shwrs
km/h	WSW	SW	SW	SW	SW	NW	NNW	NNW	NNW	NNW	ENE	WNW	WNW	W	WSW	W	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	6	6	1.4	7	4	3	4	0.8	0.3	0.2	—	—	0.1	0.3	2	1.6	0.6
max °C	9	7	5	5	5	5	7	6	6	10	9	11	14	11	8	10	10
min °C	7	5	5	5	4	4	6	4	5	9	5	8	13	8	7	8	6
chill °C	4	2	2	3	1	1	4	4	4	8	5	8	12	8	6	7	6

Freezing level m	1450	1200	1150	1250	1200	1100	1400	1200	1250	1650	1750	1750	2150	1800	1800	1850	2250
Cloud base (m)	700	600	550	400	400	450	650	800	550	900	1500	1000	2150	750	450	450	550

	—	—	5:30	—	—	5:28	—	—	5:26	—	—	5:26	—	—	5:24	—	—
	—	8:35	—	—	8:37	—	—	8:37	—	—	8:38	—	—	8:39	—	—	8:42

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 33mm), heaviest during Thu afternoon. Mild temperatures (max 9°C on Thu afternoon, min 4°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 5mm), mostly falling on Tue morning. Very mild (max 14°C on Mon afternoon, 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. 2 hours ago	13° C	Dry	Calm (0 kph at 323).
Snoqualmie Pass 30 km ESE 824m alt. 53 minutes ago	8° C	-	Calm (0 kph at 103).
Renton 30 km WSW 160m alt. 2 hours ago	12° C	Dry	Calm (5 kph at 238).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Light winds from the SW (6 kph at 227).
Grotto wx 35 km NE 321m alt. 2 hours ago	10° C	Dry	Calm (2 kph at 215).
Renton Airport 36 km WSW 218m alt. 2 hours ago	15° C	Dry and partly cloudy.	Light winds from the SW (19 kph at 220).	16 km Low: scattered Mid: broken
Grotto wx 39 km NE 1101m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 180).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (2 kph at 328).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Dry and cloudy.	Light winds from the N (11 kph at 1).	16 km Low: scattered Mid: broken High: overcast
Woodinville 43 km WNW 137.2m alt. 1 hour ago	11° C	Dry	Wind obs. (8 kph from 283 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.