– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 9 am Mon 15 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Mon 15 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Mon 15 Dec Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 15mm) on Mon morning. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 5°C on Mon morning, min -7°C on Tue night). Winds decreasing (stormy winds from the SW on Mon morning, light winds from the SSE by Wed night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Thu afternoon, min -9°C on Thu night). Winds decreasing (gales from the WSW on Thu night, light winds from the SW by Sat night). | |||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | | | | |  | | |  | | | | |
heavy rain | light snow | light snow | light snow | mod. snow | heavy snow | mod. snow | mod. snow | light snow | light snow | light snow | snow shwrs | light snow | light snow | mod. snow | mod. snow | mod. snow | mod. snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 4 | 4 | 4 | 7 | 25 | 10 | 6 | 5 | 3 | 2 | 25 | 3 | 5 | 10 | 7 | 6 | 10 | |
15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 5 | 0 | -3 | 0 | 1 | 2 | -7 | -6 | -5 | -2 | -1 | -5 | -8 | -8 | -7 | -7 | -7 | -7 |
min°C | 3 | -3 | -4 | 0 | 1 | -7 | -7 | -6 | -6 | -4 | -4 | -9 | -9 | -8 | -8 | -8 | -7 | -7 |
-6 | -13 | -13 | -8 | -8 | -19 | -18 | -16 | -14 | -10 | -15 | -18 | -17 | -16 | -17 | -18 | -15 | -14 | |
2800 | 1900 | 1250 | 1750 | 1900 | 1900 | 800 | 900 | 950 | 950 | 1700 | 850 | 600 | 700 | 700 | 700 | 750 | 750 | |
Cloud base (m) | 600 | 600 | 650 | 600 | 550 | 500 | 650 | 650 | 600 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 600 | 600 |
 | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — |
 | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Moderate rain (total 15mm) on Mon morning. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 5°C on Mon morning, min -7°C on Tue night). Winds decreasing (stormy winds from the SW on Mon morning, light winds from the SSE by Wed night).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Thu afternoon, min -9°C on Thu night). Winds decreasing (gales from the WSW on Thu night, light winds from the SW by Sat 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 | | ||||
SHIP3160 | |||||
SHIP699 | |||||
SHIP4373 |
* 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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