– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Thu 19 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Thu 19 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 64mm), heaviest during Fri afternoon. Freeze-thaw conditions (max 11°C on Thu night, min 0°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 32mm), mostly on Tue afternoon. Becoming colder with a light covering of snow, mostly falling on Tue night. Freeze-thaw conditions (max 7°C on Sun afternoon, min 0°C on Tue night). Wind will be generally light.
	Thursday 19			Friday 20			Saturday 21			Sunday 22			Monday 23			Tuesday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	mod. rain	heavy rain	heavy rain	heavy rain	rain shwrs	cloudy	rain shwrs	rain shwrs	some clouds	some clouds	cloudy	cloudy	some clouds	rain shwrs	heavy rain	heavy rain	mod. snow
km/h	SSW	SW	SW	WSW	WSW	WSW	W	W	SW	SW	W	NE	WNW	NW	SSE	S	SSW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	7
mm	7	6	22	12	14	2	—	0.2	0.2	—	—	—	—	—	0.1	10	22	—
max °C	10	10	11	10	9	8	2	4	2	5	7	4	5	6	5	5	7	1
min °C	9	10	10	10	9	3	1	2	0	1	7	2	3	6	5	4	6	0
chill °C	7	8	8	8	6	1	-1	0	0	1	6	2	3	5	5	1	3	-4

Freezing level m	2800	3000	2750	2600	2050	1200	700	950	750	1150	1300	1050	1400	1400	2000	2050	1750	500
Cloud base (m)	450	400	400	400	400	450	450	450	650	6150	950	800	700	2350	2800	500	400	650

	7:11	—	—	7:09	—	—	7:07	—	—	7:05	—	—	7:03	—	—	7:01	—	—
	—	7:16	—	—	7:19	—	—	7:20	—	—	7:22	—	—	7:22	—	—	7:23	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 64mm), heaviest during Fri afternoon. Freeze-thaw conditions (max 11°C on Thu night, min 0°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 32mm), mostly on Tue afternoon. Becoming colder with a light covering of snow, mostly falling on Tue night. Freeze-thaw conditions (max 7°C on Sun afternoon, min 0°C on Tue 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. 33 minutes ago	12° C	Dry	Calm (2 kph at 31).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	6° C	-	Calm (0 kph at 346).
Black Diamond 32 km SSW 192m alt. 58 minutes ago		-	Calm (3 kph at 144).
Grotto wx 35 km NE 321m alt. 36 minutes ago	9° C	Light rain.	Calm (2 kph at 128).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Light rain .	Light winds from the SSE (9 kph at 160).	14 km Low: scattered Mid: broken High: overcast
Grotto wx 39 km NE 1101m alt. 43 minutes ago	4° C	Dry	Calm (0 kph at 311).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 355).
Stampede Pass Airport 40 km SE 628m alt. 43 minutes ago	8° C	Light rain .	Light winds from the N (9 kph at 1).	2 km Mid: few High: overcast
Woodinville 43 km WNW 137.2m alt. 1 hour ago	14° C	Dry	Calm (5 kph at 291).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	Dry and cloudy.	Light winds from the S (15 kph at 170).	16 km Low: scattered Mid: overcast

* 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.