Grand Coulee Dam Airport Weather Forecast 15 Days, Weather in GCD Today
Current weather conditions and 15 day weather forecast for Grand Coulee Dam Airport, Washington, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Grand Coulee Dam Airport
| 22 December 2025 Monday 1.1 ° C / 34°F  Overcast |
Feels Like : -1.3 ° C / 29.6°F Humidity : % 92 Pressure : 1005 mb Wind Speed : 7.6 kmph / 4.7 miles from E  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Grand Coulee Dam Airport, WA, USA
Weather Forecast for next 15 Days for Grand Coulee Dam Airport including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Grand Coulee Dam Airport, Washington state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 21 December 2025 Sunday |  Sunny |
1.4 ° C (34.5°F) |
7 ° C (44.6°F) |
3.5 ° C (38.3°F) |
% 70 | 0% | 0.1 | Sunrise:07:43 AM Sunset: 04:05 PM |
Moonrise:09:30 AM Moonset: 05:26 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Mist |
-2.6 ° C (27.3°F) |
2.5 ° C (36.5°F) |
0.4 ° C (32.8°F) |
% 93 | 81% | 0.1 | Sunrise:07:44 AM Sunset: 04:06 PM |
Moonrise:10:00 AM Moonset: 06:37 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Fog |
-1.9 ° C (28.5°F) |
3.3 ° C (37.9°F) |
1.4 ° C (34.5°F) |
% 97 | 0% | 0.1 | Sunrise:07:44 AM Sunset: 04:06 PM |
Moonrise:10:24 AM Moonset: 07:51 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Fog |
-2.5 ° C (27.5°F) |
3.8 ° C (38.8°F) |
1 ° C (33.8°F) |
% 98 | 88% | 0 | Sunrise:07:45 AM Sunset: 04:07 PM |
Moonrise:10:43 AM Moonset: 09:05 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Heavy snow |
-2.3 ° C (27.9°F) |
1.5 ° C (34.7°F) |
-0.2 ° C (31.6°F) |
% 98 | 82% | 0.1 | Sunrise:07:45 AM Sunset: 04:08 PM |
Moonrise:11:00 AM Moonset: 10:18 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Mist |
-6.5 ° C (20.4°F) |
1.1 ° C (34°F) |
-2.7 ° C (27.2°F) |
% 94 | 0% | 0 | Sunrise:07:45 AM Sunset: 04:08 PM |
Moonrise:11:15 AM Moonset: 11:34 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Overcast |
-8.9 ° C (16°F) |
-0.3 ° C (31.5°F) |
-4.5 ° C (23.9°F) |
% 93 | 0% | 1 | Sunrise:07:45 AM Sunset: 04:09 PM |
Moonrise:11:31 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Mist |
-9 ° C (15.7°F) |
1.7 ° C (35°F) |
-4.1 ° C (24.6°F) |
% 93 | 0% | 1 | Sunrise:07:46 AM Sunset: 04:10 PM |
Moonrise:11:48 AM Moonset: 12:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Mist |
-7.7 ° C (18.2°F) |
1.7 ° C (35.1°F) |
-5.1 ° C (22.8°F) |
% 93 | 0% | 1 | Sunrise:07:46 AM Sunset: 04:11 PM |
Moonrise:12:08 PM Moonset: 02:12 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday |  Partly Cloudy |
-9.2 ° C (15.4°F) |
0 ° C (32.1°F) |
-6.4 ° C (20.4°F) |
% 92 | 0% | 2 | Sunrise:07:46 AM Sunset: 04:12 PM |
Moonrise:12:34 PM Moonset: 03:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Mist |
-8.8 ° C (16.1°F) |
0.5 ° C (32.9°F) |
-4.2 ° C (24.4°F) |
% 93 | 0% | 1 | Sunrise:07:46 AM Sunset: 04:13 PM |
Moonrise:01:11 PM Moonset: 05:05 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Mist |
-9.1 ° C (15.7°F) |
-0.4 ° C (31.2°F) |
-5.3 ° C (22.4°F) |
% 95 | 0% | 1 | Sunrise:07:46 AM Sunset: 04:14 PM |
Moonrise:02:03 PM Moonset: 06:28 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Mist |
-10 ° C (14°F) |
-1.1 ° C (30°F) |
-6.3 ° C (20.6°F) |
% 92 | 0% | 1 | Sunrise:07:46 AM Sunset: 04:15 PM |
Moonrise:03:11 PM Moonset: 07:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 January 2026 Saturday | Heavy snow |
-5.9 ° C (21.4°F) |
1.3 ° C (34.4°F) |
-2.1 ° C (28.2°F) |
% 97 | 63% | 1 | Sunrise:07:46 AM Sunset: 04:16 PM |
Moonrise:04:32 PM Moonset: 08:31 AM Moon Phase ( Full Moon ) |
|
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