– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 19 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 19 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 46mm), heaviest during Tue night. Very mild (max 19°C on Mon morning, min 5°C on Wed morning). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 4mm), mostly falling on Wed night. Very mild (max 16°C on Sat afternoon, min 5°C on Wed night). Wind will be generally light.
		Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	rain shwrs	light rain	heavy rain	heavy rain	mod. rain	light rain	light rain	rain shwrs	clear	cloudy	clear	clear	clear	rain shwrs	clear
km/h	E	ESE	WSW	ENE	W	SW	SW	SW	SW	WSW	WNW	N	ENE	NW	NW	E	NW	NW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	3	18	16	9	4	0.1	0.1	—	—	—	—	—	0.2	—
max °C	16	19	19	15	11	10	7	6	6	6	6	9	8	11	14	11	13	16	12
min °C	12	15	18	11	10	8	6	5	5	5	5	7	6	8	13	8	10	15	8
chill °C	12	15	18	11	10	7	4	2	2	5	5	7	5	8	13	8	10	15	8

Freezing level m	3150	3200	3050	3100	2600	2100	1600	1300	1500	1350	1350	1550	2250	2250	2250	2200	2200	2350	2350
Cloud base (m)	6150	4350		6000	2200	550	400	400	400	450	450	600	6800	5300	4500		3600	2100	9000

	—	6:09	—	—	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 46mm), heaviest during Tue night. Very mild (max 19°C on Mon morning, min 5°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Wed night. Very mild (max 16°C on Sat afternoon, min 5°C on Wed 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. 1 hour ago	11° C	Dry	Calm (0 kph at 334).
Snoqualmie Pass 30 km ESE 824m alt. 45 minutes ago	2° C	-	Calm (0 kph at 46).
Renton 30 km WSW 160m alt. 2 hours ago	14° C	Dry	Calm (0 kph at 85).
Grotto wx 35 km NE 321m alt. 1 hour ago	13° C	Dry	Calm (3 kph at 34).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Clear	Light winds from the NNW (6 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 333).
Auburn 39 km SW 119m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 222).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 274).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km

* 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.