– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Mon 20 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 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 43mm), heaviest during Wed morning. Very mild (max 16°C on Mon night, min 4°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Some drizzle, heaviest during Sun afternoon. Very mild (max 13°C on Fri afternoon, min 4°C on Thu night). Wind will be generally light.
		Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25			Sunday 26
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	cloudy	light rain	heavy rain	heavy rain	mod. rain	light rain	light rain	rain shwrs	clear	clear	some clouds	some clouds	clear	some clouds	cloudy	light rain	rain shwrs	rain shwrs
km/h	SW	SW	WSW	W	SW	SW	SW	W	WNW	ENE	N	N	E	WSW	N	ENE	SW	WNW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	0.5	13	17	6	4	1.5	0.3	—	—	—	—	—	—	—	0.1	0.9	0.6
max °C	16	10	10	8	6	6	6	5	8	7	11	13	9	12	13	10	11	13	10
min °C	10	10	9	6	6	6	4	4	6	4	7	13	5	8	13	8	10	12	6
chill °C	10	10	8	5	3	3	2	3	5	3	6	12	3	8	13	8	10	12	6

Freezing level m	3050	2900	2200	1650	1400	1400	1100	1250	1400	1650	1750	1900	1800	1800	1950	1850	1800	2000	1850
Cloud base (m)	5350	700	500	400	400	400	400	450	500	2200		2750	7700	7900	2700	2150	2050	1900	2050

	—	6:07	—	—	6:05	—	—	6:03	—	—	6:01	—	—	6:00	—	—	5:58	—	—
	—	—	—	8:04	—	—	8:05	—	—	8:07	—	—	8:07	—	—	8:09	—	—	8:10

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 43mm), heaviest during Wed morning. Very mild (max 16°C on Mon night, min 4°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Sun afternoon. Very mild (max 13°C on Fri afternoon, min 4°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. 41 minutes ago	12° C	Dry	Calm (0 kph at 316).
Snoqualmie Pass 30 km ESE 824m alt. 47 minutes ago	4° C	-	Calm (2 kph at 88).
Renton 30 km WSW 160m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 15).
Grotto wx 35 km NE 321m alt. 1 hour ago	16° C	Dry	Calm (2 kph at 20).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the S (6 kph at 170).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 341).
Auburn 39 km SW 119m alt. 2 hours ago	13° C	Dry	Calm (0 kph at 195).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9° C	Clear	Wind obs. (6 kph from 240 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 42 minutes ago	9° C	Dry	Calm (0 kph at 289).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the SSE (11 kph at 150).	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.