– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Mon 27 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 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 6°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 15°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	light rain	light rain	some clouds	clear	clear	clear	some clouds	some clouds	rain shwrs	some clouds	light rain	some clouds	clear	rain shwrs	rain shwrs
km/h	WSW	WSW	SW	SW	WSW	NW	NW	NW	ESE	WNW	NW	NNW	NW	NW	NNW	NW	NNW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.1	0.3	0.1	0.1	—	—	—	—	—	—	0.1	—	0.1	—	—	0.2	0.3
max °C	8	10	8	6	8	8	11	15	12	14	15	12	11	13	11	13	15	13
min °C	7	9	6	6	7	6	8	15	9	11	15	8	9	13	7	10	15	11
chill °C	6	8	5	5	6	6	8	15	9	11	15	8	9	13	7	10	15	11

Freezing level m	1500	1700	1350	1400	1550	1600	2050	2500	2600	2400	2600	2400	2150	2300	2250	2350	2600	2800
Cloud base (m)	1500	1650	700	600	650	550	950	1750	2600	2650	2100	1800	2050	1550	2550	2600	1650	2600

	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 6°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 15°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. 49 minutes ago	11° C	Dry	Calm (0 kph at 332).
Snoqualmie Pass 30 km ESE 824m alt. 51 minutes ago	-1° C	-	Calm (0 kph at 37).
Renton 30 km WSW 160m alt. 1 hour ago	9° C	Dry	Calm (2 kph at 207).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 2 hours ago	2° C	-	Calm (0 kph at 297).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Light winds from the N (7 kph at 1).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 2 hours ago	-1° C	-	Calm (0 kph at 352).
Auburn 39 km SW 119m alt. 2 hours ago	13° C	Dry	Calm (3 kph at 265).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	1° C	Fog -.	Light winds from the N (11 kph at 1).	0 km
SHIP4412 43 km W 3m alt. 3 hours ago	10° 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.