– Lat/Long: 47.64° N 120.91° W
Grindstone Mountain Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
3 Grindstone Mountain Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMild with light rain (total 6mm) on Thu night Becoming colder with a light covering of snow, mostly falling on Fri morning. Freeze-thaw conditions (max 7°C on Thu afternoon, min -4°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 morning. Becoming milder with light rain (total 9mm) on Tue morning. Freeze-thaw conditions (max 4°C on Sun afternoon, min -2°C on Tue night). Winds increasing (calm on Sun morning, gales from the W by Tue morning). | |||||||||||||||||
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | |  | | | | | |  | | |  | |
some clouds | cloudy | mod. rain | light snow | light snow | snow shwrs | clear | clear | cloudy | some clouds | clear | cloudy | clear | some clouds | rain shwrs | light snow | light snow | clear | |
Cloud base (m) | 3400 | 2400 | 850 | 900 | 900 | 950 | 6850 | 6200 | 7650 | 5650 | 6450 | 6200 | 1900 | 850 | 850 | 950 | ||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | 3 | 2 | 3 | — | — | — | — | — | — | — | — | — | 4 | 4 | — |
mm | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | 3 | 6 | — | — |
max °C | 6 | 7 | 7 | 1 | 1 | -2 | -1 | 1 | 0 | 2 | 4 | 2 | 3 | 4 | 3 | 2 | 2 | -1 |
min °C | 5 | 7 | 3 | 1 | 0 | -4 | -3 | 1 | 0 | 0 | 3 | 1 | 1 | 4 | 2 | 2 | 1 | -2 |
chill °C | 2 | 3 | -3 | -4 | -7 | -13 | -10 | -4 | -2 | -2 | 0 | -4 | -5 | -1 | -4 | -6 | -7 | -11 |
Freezing level m | 3400 | 3500 | 2850 | 2450 | 2250 | 1600 | 2150 | 2450 | 2350 | 2650 | 2800 | 2600 | 2800 | 2900 | 3250 | 2800 | 2400 | 1900 |
 | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | 6:57 | — | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:46 | — |
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Grindstone Mountain Weather (Days 0-3):
The weather forecast for Grindstone Mountain is: Mild with light rain (total 6mm) on Thu night Becoming colder with a light covering of snow, mostly falling on Fri morning. Freeze-thaw conditions (max 7°C on Thu afternoon, min -4°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, calm by Sat night).
Grindstone Mountain Weather (Days 3-6):
A light covering of new snow mostly falling on Tue morning. Becoming milder with light rain (total 9mm) on Tue morning. Freeze-thaw conditions (max 4°C on Sun afternoon, min -2°C on Tue night). Winds increasing (calm on Sun morning, gales from the W by Tue morning).
This table gives the weather forecast for Grindstone Mountain at the specific elevation of 2296 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Grindstone 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 |
|---|---|---|---|---|---|
 | |||||
| |||||
| |||||
Winthrop Airport (Washington) | | ||||
Seattl / oeing Airport |  | ||||
BUOY-EBSW1 | |||||
 |
* 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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