– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 3 pm Sat 20 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sat 20 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sat 20 Dec Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -4°C on Sun morning, min -8°C on Sun night). Winds decreasing (strong winds from the SW on Sat afternoon, light winds from the SSW by Tue morning). | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Tue afternoon. Temperatures will be below freezing (max -1°C on Wed night, min -6°C on Tue afternoon). Winds increasing (calm on Wed afternoon, fresh winds from the SE by Thu morning). | ||||||||||||||||
Sat 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | | | | |  | | |  |  | |  | |
mod. snow | heavy snow | light snow | light snow | heavy snow | cloudy | light snow | heavy snow | light snow | light snow | cloudy | cloudy | cloudy | some clouds | some clouds | some clouds | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
8 | 13 | 2 | 4 | 15 | — | 1 | 21 | 3 | 2 | — | — | — | — | — | — | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -5 | -5 | -4 | -4 | -6 | -6 | -5 | -6 | -6 | -5 | -4 | -3 | -3 | -1 | -2 | -1 | -2 |
min °C | -5 | -5 | -4 | -4 | -8 | -7 | -5 | -6 | -6 | -6 | -5 | -4 | -4 | -2 | -2 | -2 | -3 |
-15 | -14 | -10 | -12 | -17 | -16 | -14 | -15 | -12 | -13 | -9 | -6 | -7 | -4 | -9 | -8 | -7 | |
1000 | 1000 | 1100 | 1100 | 800 | 750 | 950 | 800 | 850 | 900 | 850 | 1300 | 1200 | 1600 | 1250 | 1400 | 1250 | |
Cloud base (m) | 600 | 600 | 550 | 550 | 600 | 650 | 600 | 600 | 600 | 600 | 700 | 800 | 700 | 600 | 750 | 700 | 600 |
 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — |
 | 4:15 | — | — | 4:15 | — | — | 4:16 | — | — | 4:16 | — | — | 4:17 | — | — | 4:17 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -4°C on Sun morning, min -8°C on Sun night). Winds decreasing (strong winds from the SW on Sat afternoon, light winds from the SSW by Tue morning).
Mount Index Weather (Days 3-6):
A light covering of new snow mostly falling on Tue afternoon. Temperatures will be below freezing (max -1°C on Wed night, min -6°C on Tue afternoon). Winds increasing (calm on Wed afternoon, fresh winds from the SE by Thu morning).
This table gives the weather forecast for Mount Index at the specific elevation of 1832 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Index. 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
 | |||||
BUOY-46120 | |||||
Seattl / oeing Airport | | ||||
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* 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.
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