– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 4 pm Sun 18 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 18 Oct Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Freeze-thaw conditions (max 3°C on Wed morning, min -2°C on Mon morning). Wind will be generally light. | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 4°C on Wed afternoon, min -8°C on Thu night). Winds decreasing (fresh winds from the NW on Thu night, calm by Fri night). | ||||||||||||||||
Sun 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | | | | |  | | | | |
some clouds | cloudy | cloudy | some clouds | some clouds | clear | some clouds | clear | clear | clear | some clouds | some clouds | some clouds | snow shwrs | some clouds | clear | clear | |
Cloud base (m) | 5800 | 3100 | 2750 | 6550 | 3550 | 4500 | 8400 | 2250 | 1600 | 1600 | 1750 | ||||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 2 | 1 | -1 | -1 | -1 | 1 | 2 | 2 | 3 | 4 | 2 | 0 | -1 | -7 | -6 | -4 | -1 |
min °C | 1 | -1 | -2 | -1 | -1 | 0 | 2 | 2 | 2 | 3 | 1 | 0 | -4 | -8 | -7 | -5 | -3 |
chill °C | -2 | -6 | -6 | -3 | -1 | -3 | -1 | -2 | -2 | -2 | -4 | -5 | -11 | -18 | -16 | -11 | -6 |
Freezing level m | 2950 | 2600 | 2450 | 2550 | 2450 | 2850 | 3000 | 3150 | 3050 | 3050 | 2950 | 2650 | 2150 | 1350 | 1650 | 1800 | 1650 |
 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — | 7:33 | — | — |
 | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:04 | — | — | 6:01 | — | — | 6:00 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: Mostly dry. Freeze-thaw conditions (max 3°C on Wed morning, min -2°C on Mon morning). Wind will be generally light.
Fortress Mountain Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 4°C on Wed afternoon, min -8°C on Thu night). Winds decreasing (fresh winds from the NW on Thu night, calm by Fri night).
This table gives the weather forecast for Fortress Mountain at the specific elevation of 2670 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Fortress Mountain. 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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Winthrop Airport (Washington) |  | ||||
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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.