– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 20 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 20 Apr 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 Wed morning. Warm (max 20°C on Mon afternoon, min 4°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 15°C on Sat afternoon, min 5°C on Thu night). Wind will be generally light.
	Mon 20		Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	rain shwrs	cloudy	light rain	heavy rain	heavy rain	mod. rain	light rain	light rain	rain shwrs	clear	clear	clear	some clouds	some clouds	rain shwrs	rain shwrs
km/h	W	ENE	WSW	WSW	WSW	SW	SW	SW	W	NW	ENE	NW	NW	ESE	WNW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	—	0.3	10	13	7	3	0.6	0.2	—	—	—	—	—	0.2	0.2
max °C	20	16	11	11	9	6	7	6	5	8	7	12	14	10	13	15	11
min °C	19	11	10	10	6	6	6	4	4	6	5	8	13	8	10	14	8
chill °C	19	11	10	9	4	3	3	2	3	6	4	8	12	8	10	13	8

Freezing level m	3000	3100	2950	2400	1850	1500	1600	1050	1300	1450	1850	1900	2150	2150	2150	2250	2200
Cloud base (m)	3450	4900	800	650	400	400	400	400	450	500			2350		3000	2350	4400

	—	—	6:07	—	—	6:05	—	—	6:03	—	—	6:01	—	—	6:00	—	—
	—	8:02	—	—	8:04	—	—	8:05	—	—	8:07	—	—	8:07	—	—	8:09

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 33mm), heaviest during Wed morning. Warm (max 20°C on Mon afternoon, min 4°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 15°C on Sat afternoon, min 5°C on Thu 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. 37 minutes ago	22° C	Dry	Calm (0 kph at 309).
Snoqualmie Pass 30 km ESE 824m alt. 42 minutes ago	16° C	-	Calm (0 kph at 154).
Renton 30 km WSW 160m alt. 2 hours ago	23° C	Dry	Calm (3 kph at 233).
Grotto wx 35 km NE 321m alt. 2 hours ago	24° C	Dry	Light winds from the W (11 kph at 263).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21° C	Clear	Light winds from the N (7 kph at 350).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	18° C	Dry	Calm (0 kph at 31).
Auburn 39 km SW 119m alt. 44 minutes ago	23° C	Dry	Calm (3 kph at 187).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	17° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 42 minutes ago	22° C	Dry	Calm (2 kph at 52).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	22° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered

* 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.