– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 10 am Tue 12 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Tue 12 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Tue 12 May Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 54mm), heaviest during Wed morning. Warm (max 21°C on Tue afternoon, min 3°C on Wed morning). Winds increasing (calm on Tue afternoon, fresh winds from the WSW by Wed afternoon). | Days 4–6 Weather SummaryModerate rain (total 15mm), heaviest on Fri night giving way to a moderate fall of snow, heaviest on Sat night. Freeze-thaw conditions (max 4°C on Fri afternoon, min -1°C on Sat night). Wind will be generally light. | |||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | Sunday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | |  |  | |  |  |  |  | | | | |
some clouds | some clouds | rain shwrs | heavy rain | heavy rain | heavy rain | light rain | light rain | light rain | rain shwrs | light rain | light snow | snow shwrs | light snow | mod. snow | light snow | rain shwrs | light rain | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 3 | 9 | 1 | — | — | |
— | — | 10 | 12 | 10 | 14 | 1.5 | 2 | 5 | 0.7 | 1.5 | 7 | 1.7 | 3 | — | — | 0.2 | 0.1 | |
max °C | 18 | 21 | 15 | 3 | 6 | 5 | 4 | 5 | 4 | 3 | 4 | 2 | 3 | 2 | 0 | 0 | 3 | 3 |
min °C | 16 | 18 | 6 | 3 | 4 | 3 | 3 | 5 | 3 | 2 | 3 | 1 | 2 | 2 | -1 | 0 | 1 | 2 |
16 | 18 | 4 | 0 | 0 | -1 | 0 | 2 | -1 | -1 | -1 | -3 | -1 | -2 | -6 | -4 | 0 | 2 | |
3800 | 3550 | 3150 | 1500 | 1950 | 1450 | 1550 | 1650 | 1500 | 1400 | 1400 | 1250 | 1300 | 1300 | 900 | 1000 | 1400 | 1550 | |
Cloud base (m) | 5750 | 6250 | 850 | 600 | 600 | 650 | 650 | 700 | 650 | 900 | 850 | 600 | 700 | 650 | 600 | 650 | 650 | 850 |
 | 5:31 | — | — | 5:31 | — | — | 5:30 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | — | 8:32 | — | — | 8:34 | — | — | 8:36 | — | — | 8:37 | — | — | 8:37 | — | — | 8:38 |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Heavy rain (total 54mm), heaviest during Wed morning. Warm (max 21°C on Tue afternoon, min 3°C on Wed morning). Winds increasing (calm on Tue afternoon, fresh winds from the WSW by Wed afternoon).
Mount Index Weather (Days 3-6):
Moderate rain (total 15mm), heaviest on Fri night giving way to a moderate fall of snow, heaviest on Sat night. Freeze-thaw conditions (max 4°C on Fri afternoon, min -1°C on Sat night). Wind will be generally light.
This table gives the weather forecast for Mount Index at the specific elevation of 1000 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 |
|---|---|---|---|---|---|
 |
* 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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