– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 4 pm Thu 19 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Thu 19 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 19 Mar Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryMild with heavy rain (total 59mm), heaviest during Thu night. Becoming colder with a moderate fall of snow heaviest on Fri afternoon. Freeze-thaw conditions (max 5°C on Thu night, min -7°C on Sat morning). Winds decreasing (near gales from the SW on Thu night, light winds from the WSW by Sat night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 1°C on Mon night, min -9°C on Wed morning). Winds increasing (light winds from the SSW on Mon afternoon, near gales from the SW by Tue afternoon). | ||||||||||||||||
Thu 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  |  |  | | | | | | |  | |
mod. rain | heavy rain | heavy rain | mod. snow | cloudy | light snow | snow shwrs | some clouds | some clouds | cloudy | some clouds | cloudy | some clouds | some clouds | mod. snow | mod. snow | heavy snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | 8 | — | 2 | 1 | — | — | — | — | — | — | — | 6 | 8 | 17 | |
8 | 33 | 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 3 | 5 | 3 | 2 | -1 | -7 | -7 | -7 | -5 | -4 | -3 | -3 | -2 | 1 | -1 | 1 | 0 |
min °C | 3 | 4 | 2 | 1 | -5 | -7 | -7 | -7 | -6 | -4 | -3 | -3 | -3 | -1 | -1 | 0 | -8 |
-3 | -2 | -5 | -6 | -12 | -15 | -14 | -13 | -11 | -9 | -8 | -7 | -7 | -8 | -8 | -8 | -19 | |
3100 | 2750 | 2300 | 2000 | 1200 | 700 | 900 | 600 | 1100 | 1250 | 1050 | 1250 | 1500 | 2000 | 1550 | 2100 | 750 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 850 | 650 | 700 | 800 | 700 | 950 | 700 | 650 | 2250 | 2800 | 650 | 600 | 600 |
 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — |
 | 7:16 | — | — | 7:17 | — | — | 7:20 | — | — | 7:21 | — | — | 7:22 | — | — | 7:23 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Mild with heavy rain (total 59mm), heaviest during Thu night. Becoming colder with a moderate fall of snow heaviest on Fri afternoon. Freeze-thaw conditions (max 5°C on Thu night, min -7°C on Sat morning). Winds decreasing (near gales from the SW on Thu night, light winds from the WSW by Sat night).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 1°C on Mon night, min -9°C on Wed morning). Winds increasing (light winds from the SSW on Mon afternoon, near gales from the SW by Tue afternoon).
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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