– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 9 pm Thu 18 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Thu 18 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Thu 18 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 afternoon. Temperatures will be below freezing (max -5°C on Thu night, min -9°C on Thu night). Winds decreasing (near gales from the WSW on Thu night, moderate winds from the WSW by Sun afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Mon night. Temperatures will be below freezing (max -3°C on Tue night, min -8°C on Sun night). Winds decreasing (strong winds from the SSW on Mon afternoon, light winds from the SSE by Tue night). | ||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | | | |  | |  | | | | |  | | |  | |
heavy snow | light snow | light snow | heavy snow | mod. snow | mod. snow | heavy snow | light snow | heavy snow | heavy snow | cloudy | light snow | heavy snow | light snow | cloudy | some clouds | light snow | mod. snow | snow shwrs | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
15 | 5 | 5 | 12 | 6 | 9 | 14 | 4 | 13 | 12 | — | 4 | 28 | 3 | — | — | 1 | 7 | 2 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -5 | -8 | -8 | -7 | -6 | -5 | -5 | -5 | -6 | -6 | -6 | -5 | -6 | -6 | -5 | -3 | -3 | -5 | -4 |
min°C | -9 | -8 | -8 | -8 | -7 | -6 | -5 | -5 | -6 | -8 | -7 | -6 | -7 | -7 | -6 | -5 | -4 | -6 | -5 |
-18 | -18 | -19 | -18 | -16 | -15 | -14 | -14 | -15 | -17 | -16 | -16 | -15 | -15 | -13 | -10 | -11 | -13 | -10 | |
750 | 650 | 700 | 750 | 800 | 900 | 950 | 950 | 900 | 700 | 800 | 900 | 800 | 800 | 850 | 650 | 1000 | 850 | 750 | |
Cloud base (m) | 700 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 650 | 600 | 550 | 550 |
 | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — |
 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — | — | 4:16 | — | — | 4:16 | — | — | 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 afternoon. Temperatures will be below freezing (max -5°C on Thu night, min -9°C on Thu night). Winds decreasing (near gales from the WSW on Thu night, moderate winds from the WSW by Sun afternoon).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Mon night. Temperatures will be below freezing (max -3°C on Tue night, min -8°C on Sun night). Winds decreasing (strong winds from the SSW on Mon afternoon, light winds from the SSE by Tue night).
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 | | ||||
 | |||||
* 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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