– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 27 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 27 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 15°C on Wed afternoon, min 5°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 16°C on Thu afternoon, min 7°C on Fri night). Wind will be generally light.
	Monday 27			Tuesday 28			Wednesday 29			Thursday 30			Friday 1			Saturday 2
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	cloudy	light rain	rain shwrs	clear	clear	clear	some clouds	clear	some clouds	some clouds	rain shwrs	rain shwrs	some clouds	rain shwrs	some clouds
km/h	WSW	WSW	SW	SW	W	NNW	NW	NW	ESE	WNW	NW	SW	WSW	WNW	N	NW	NE	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.1	0.4	—	0.1	0.1	—	—	—	—	—	—	—	0.1	0.1	—	0.5	—
max °C	8	10	8	6	9	8	12	15	12	14	16	12	10	12	10	12	15	14
min °C	7	9	5	6	7	6	8	15	9	11	16	8	8	12	7	8	15	12
chill °C	6	8	4	5	6	6	8	15	9	11	16	8	8	12	7	8	15	12

Freezing level m	1550	1650	1400	1400	1550	1650	2200	2550	2700	2600	2750	2500	2100	2150	2050	2450	2700	2900
Cloud base (m)	900	900	650	650	800	550		2300	2600	2600	6800	2000	500	900	1950	950	750	2800

	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—	5:50	—	—	5:48	—	—
	—	—	8:12	—	—	8:14	—	—	8:15	—	—	8:16	—	—	8:17	—	—	8:19

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 15°C on Wed afternoon, min 5°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Thu afternoon, min 7°C on Fri 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	15° C	Dry	Calm (0 kph at 24).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	12° C	-	Calm (0 kph at 263).
Renton 30 km WSW 160m alt. 48 minutes ago	14° C	Dry	Light winds from the SSW (8 kph at 208).
Black Diamond 32 km SSW 192m alt. 53 minutes ago		-	Wind obs. (8 kph from 360 degs) was rejected.
Grotto wx 35 km NE 321m alt. 1 hour ago	14° C	Dry	Light winds from the W (19 kph at 273).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and cloudy.	Light winds from the S (19 kph at 190).	16 km Low: few Mid: overcast
Grotto wx 39 km NE 1101m alt. 29 minutes ago	8° C	Dry	Calm (3 kph at 119).
Auburn 39 km SW 119m alt. 2 hours ago	24° C	Dry	Calm (3 kph at 251).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the N (11 kph at 1).	16 km Low: overcast
SHIP8104 43 km W 3m alt. 3 hours ago	13° C

* 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.