– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 10 am Wed 18 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Wed 18 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Wed 18 Mar Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 97mm), mostly on Fri afternoon. Becoming colder with a light covering of snow ,mostly falling on Fri afternoon. Freeze-thaw conditions (max 4°C on Wed morning, min -5°C on Fri night). Winds decreasing (near gales from the SW on Wed night, light winds from the W by Fri night). | Days 4–6 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 1°C on Mon night, min -8°C on Sat afternoon). Winds increasing (light winds from the WNW on Sun night, strong winds from the SSW by Mon night). | |||||||||||||||||
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  | |  |  |  | |  |  | | | |
heavy rain | mod. rain | heavy rain | heavy rain | mod. rain | heavy rain | heavy rain | light snow | light snow | light snow | snow shwrs | clear | some clouds | some clouds | some clouds | cloudy | some clouds | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | 5 | 3 | 1 | 1 | — | — | — | — | — | — | 1 | |
16 | 6 | 17 | 10 | 6 | 18 | 14 | 10 | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 3 | 4 | 3 | 3 | 4 | 3 | 2 | 0 | -6 | -7 | -6 | -4 | -2 | 0 | 0 | 0 | 1 |
min °C | 4 | 3 | 2 | 3 | 2 | 3 | 3 | 1 | -5 | -7 | -8 | -7 | -5 | -3 | -2 | 0 | 0 | 0 |
-2 | -3 | -5 | -3 | -4 | -3 | -4 | -6 | -11 | -15 | -15 | -14 | -10 | -7 | -4 | -3 | -3 | -7 | |
2600 | 2800 | 2450 | 2500 | 2650 | 2700 | 2400 | 2100 | 1200 | 700 | 850 | 0 | 1250 | 1400 | 1700 | 1850 | 1800 | 2050 | |
Cloud base (m) | 650 | 600 | 600 | 650 | 650 | 600 | 600 | 600 | 650 | 650 | 650 | 650 | 6250 | 2000 | 3850 | 2750 | 2600 | |
 | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — |
 | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — | — | 7:20 | — | — | 7:21 | — | — | 7:22 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Heavy rain (total 97mm), mostly on Fri afternoon. Becoming colder with a light covering of snow ,mostly falling on Fri afternoon. Freeze-thaw conditions (max 4°C on Wed morning, min -5°C on Fri night). Winds decreasing (near gales from the SW on Wed night, light winds from the W by Fri night).
Mount Index Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 1°C on Mon night, min -8°C on Sat afternoon). Winds increasing (light winds from the WNW on Sun night, strong winds from the SSW by Mon 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 |
|---|---|---|---|---|---|
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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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