– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 17 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 17 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 15°C on Mon afternoon, min 3°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Wed afternoon. Very mild (max 13°C on Mon night, min 1°C on Wed afternoon). Wind will be generally light.
		Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	light rain	light rain	light rain	light snow	cloudy	some clouds	rain shwrs	clear
km/h	SE	SE	E	ESE	ESE	ESE	NE	ESE	WNW	WSW	WNW	NNW	WNW	WSW	SW	W	NNW	NNE	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	0.8	3	0.7	1.4	—	—	0.1	—
max °C	4	6	9	10	12	13	12	14	15	13	7	8	5	3	2	2	2	6	7
min °C	3	5	8	9	11	13	11	13	13	6	6	6	4	3	1	1	2	4	5
chill °C	0	3	6	8	9	12	11	12	13	6	6	4	2	0	-4	-3	0	3	4

Freezing level m	2200	2300	2600	2800	2950	2950	3100	3200	3200	3200	3150	2950	2650	1850	1550	1650	1600	2400	2650
Cloud base (m)	5200		3100		3350	3200	6000	5050		4950	3400	850	400	400	400	700	700	8200

	—	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—	6:05	—	—	6:03	—	—
	—	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04	—	—	8:05	—	—	8:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 15°C on Mon afternoon, min 3°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Wed afternoon. Very mild (max 13°C on Mon night, min 1°C on Wed afternoon). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 52 minutes ago	6° C	Dry	Calm (0 kph at 334).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	1° C	-	Calm (0 kph at 28).
Renton 30 km WSW 160m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 32).
Grotto wx 35 km NE 321m alt. 1 hour ago	7° C	Dry	Calm (3 kph at 43).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11° C	Clear	Light winds from the N (6 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 37 minutes ago	1° C	-	Calm (0 kph at 352).
Auburn 39 km SW 119m alt. 36 minutes ago	9° C	Dry	Calm (0 kph at 53).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 55 minutes ago	7° C	Dry	Calm (2 kph at 114).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	12° C	Dry and partly cloudy.	Light winds from the NW (6 kph at 320).	16 km Low: broken

* 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.