– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 10 pm Tue 12 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Tue 12 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 12 May Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryModerate rain (total 14mm) on Tue night. Becoming colder with heavy fall of snow, heaviest during Wed afternoon. Freeze-thaw conditions (max 11°C on Tue night, min -3°C on Thu night). Winds increasing (light winds from the SW on Tue night, fresh winds from the WSW by Wed afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sat afternoon. Freeze-thaw conditions (max 2°C on Mon afternoon, min -5°C on Fri night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the WNW by Mon morning). | ||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | Sunday 17 | Monday 18 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  | | |  |  | | | |  |  | | | | |
rain shwrs | mod. snow | mod. snow | mod. snow | cloudy | light snow | snow shwrs | light snow | light snow | heavy snow | snow shwrs | mod. snow | mod. snow | light snow | some clouds | cloudy | some clouds | cloudy | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | 9 | 9 | 6 | — | 1 | 4 | 1 | 5 | 13 | 4 | 9 | 8 | 1 | — | — | — | — | — | |
14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 11 | -1 | 1 | 0 | -1 | -1 | -2 | -3 | -3 | -3 | -5 | -4 | -4 | -3 | -1 | -1 | 0 | 2 | 2 |
min °C | 2 | -1 | 0 | -2 | -2 | -1 | -3 | -3 | -3 | -5 | -5 | -5 | -5 | -3 | -2 | -1 | -1 | 2 | 0 |
-2 | -6 | -7 | -9 | -8 | -6 | -10 | -9 | -10 | -13 | -13 | -12 | -13 | -8 | -6 | -5 | -4 | -2 | -5 | |
3000 | 1650 | 1950 | 1500 | 1550 | 1650 | 1500 | 1250 | 1300 | 1300 | 1150 | 1150 | 1050 | 1200 | 1550 | 1700 | 1750 | 2100 | 1900 | |
Cloud base (m) | 800 | 600 | 600 | 650 | 650 | 700 | 600 | 750 | 700 | 600 | 650 | 600 | 650 | 650 | 700 | 900 | 850 | 1850 | 650 |
 | — | 5:31 | — | — | 5:30 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — | 5:24 | — | — |
 | — | — | — | 8:34 | — | — | 8:36 | — | — | 8:37 | — | — | 8:37 | — | — | 8:38 | — | — | 8:40 |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Moderate rain (total 14mm) on Tue night. Becoming colder with heavy fall of snow, heaviest during Wed afternoon. Freeze-thaw conditions (max 11°C on Tue night, min -3°C on Thu night). Winds increasing (light winds from the SW on Tue night, fresh winds from the WSW by Wed afternoon).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Sat afternoon. Freeze-thaw conditions (max 2°C on Mon afternoon, min -5°C on Fri night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the WNW by Mon 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 |
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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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