– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 10 am Fri 25 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Fri 25 Sep Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Fri afternoon. Temperatures will be below freezing (max 0°C on Sun morning, min -7°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, calm by Sat night). | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Tue afternoon. Freeze-thaw conditions (max 2°C on Mon afternoon, min -7°C on Wed night). Winds increasing (light winds from the WNW on Mon morning, near gales from the WSW by Tue afternoon). | |||||||||||||||||
Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | | |  | | | | |  | |
snow shwrs | mod. snow | snow shwrs | some clouds | clear | cloudy | some clouds | clear | some clouds | clear | clear | some clouds | cloudy | mod. snow | snow shwrs | clear | some clouds | clear | |
Cloud base (m) | 1700 | 1650 | 1650 | 1600 | 1650 | 6700 | 6100 | 7950 | 6350 | 2650 | 2350 | 1650 | 1650 | 1600 | 2100 | 1800 | ||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | 3 | 10 | 3 | — | — | — | — | — | — | — | — | — | — | 6 | 3 | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | -1 | -2 | -6 | -4 | -2 | -1 | 0 | 0 | 0 | 1 | 2 | 2 | 1 | 1 | -2 | -5 | -4 | -4 |
min °C | -1 | -4 | -7 | -5 | -3 | -2 | -1 | 0 | 0 | 0 | 2 | 1 | 1 | 0 | -6 | -6 | -5 | -7 |
chill °C | -6 | -13 | -16 | -12 | -7 | -2 | -3 | -2 | -3 | -5 | -2 | -6 | -6 | -8 | -16 | -15 | -12 | -15 |
Freezing level m | 2450 | 2100 | 1450 | 1900 | 2450 | 2300 | 2650 | 2700 | 2600 | 2900 | 2950 | 3250 | 2900 | 2800 | 1500 | 2000 | 2200 | 1500 |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — |
 | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:46 | — | — | 6:45 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: A moderate fall of snow, heaviest on Fri afternoon. Temperatures will be below freezing (max 0°C on Sun morning, min -7°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, calm by Sat night).
Fortress Mountain Weather (Days 3-6):
A light covering of new snow mostly falling on Tue afternoon. Freeze-thaw conditions (max 2°C on Mon afternoon, min -7°C on Wed night). Winds increasing (light winds from the WNW on Mon morning, near gales from the WSW by Tue afternoon).
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 |
|---|---|---|---|---|---|
lightning 43km E of Darrington |  | ||||
lightning 36km NNW of Leavenworth | | ||||
lightning 30km W of Granite Falls | | ||||
lightning 47km NW of Brewster | | ||||
Winthrop Airport (Washington) |  | ||||
lightning 39km WNW of Okanogan | | ||||
lightning 64km W of Oroville | | ||||
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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.