Grand Coulee Weather Forecast 15 Days, Weather in Grand Coulee Today
Current weather conditions and 15 day weather forecast for Grand Coulee, 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
| 05 April 2026 Sunday 12.8 ° C / 55°F  Sunny |
Feels Like : 13.4 ° C / 56°F Humidity : % 52 Pressure : 1024 mb Wind Speed : 3.6 kmph / 2.2 miles from NE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Grand Coulee, WA, USA
Weather Forecast for next 15 Days for Grand Coulee 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, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 05 April 2026 Sunday | Sunny |
6.4 ° C (43.5°F) |
22.8 ° C (73°F) |
14.2 ° C (57.6°F) |
% 42 | 0% | 1 | Sunrise:06:26 AM Sunset: 07:32 PM |
Moonrise:No moonrise Moonset: 07:28 AM Moon Phase ( Waning Gibbous ) |
|
| 06 April 2026 Monday |  Cloudy |
7.7 ° C (45.9°F) |
23.2 ° C (73.8°F) |
14.7 ° C (58.4°F) |
% 53 | 0% | 1.2 | Sunrise:06:24 AM Sunset: 07:34 PM |
Moonrise:12:12 AM Moonset: 07:59 AM Moon Phase ( Waning Gibbous ) |
|
| 07 April 2026 Tuesday | Sunny |
0.7 ° C (33.2°F) |
12.2 ° C (54°F) |
6.8 ° C (44.2°F) |
% 57 | 0% | 1.1 | Sunrise:06:22 AM Sunset: 07:35 PM |
Moonrise:01:16 AM Moonset: 08:40 AM Moon Phase ( Waning Gibbous ) |
|
| 08 April 2026 Wednesday | Sunny |
-3.8 ° C (25.2°F) |
14.3 ° C (57.7°F) |
5.8 ° C (42.4°F) |
% 49 | 0% | 1.1 | Sunrise:06:20 AM Sunset: 07:37 PM |
Moonrise:02:10 AM Moonset: 09:32 AM Moon Phase ( Waning Gibbous ) |
|
| 09 April 2026 Thursday | Sunny |
1.9 ° C (35.4°F) |
17.4 ° C (63.3°F) |
9.7 ° C (49.5°F) |
% 44 | 0% | 0 | Sunrise:06:18 AM Sunset: 07:38 PM |
Moonrise:02:55 AM Moonset: 10:32 AM Moon Phase ( Waning Gibbous ) |
|
| 10 April 2026 Friday | Sunny |
4 ° C (39.2°F) |
18.8 ° C (65.8°F) |
11.3 ° C (52.3°F) |
% 47 | 0% | 4 | Sunrise:06:16 AM Sunset: 07:40 PM |
Moonrise:03:30 AM Moonset: 11:41 AM Moon Phase ( Last Quarter ) |
|
| 11 April 2026 Saturday |  Partly Cloudy |
4.3 ° C (39.7°F) |
17.3 ° C (63.2°F) |
10.5 ° C (50.8°F) |
% 49 | 0% | 4 | Sunrise:06:14 AM Sunset: 07:41 PM |
Moonrise:03:57 AM Moonset: 12:53 PM Moon Phase ( Waning Crescent ) |
|
| 12 April 2026 Sunday |  Patchy rain nearby |
5.4 ° C (41.7°F) |
14.2 ° C (57.6°F) |
9.4 ° C (49°F) |
% 53 | 85% | 2 | Sunrise:06:12 AM Sunset: 07:42 PM |
Moonrise:04:19 AM Moonset: 02:07 PM Moon Phase ( Waning Crescent ) |
|
| 13 April 2026 Monday | Partly Cloudy |
2.1 ° C (35.8°F) |
14.3 ° C (57.8°F) |
7.9 ° C (46.2°F) |
% 59 | 0% | 3 | Sunrise:06:10 AM Sunset: 07:44 PM |
Moonrise:04:37 AM Moonset: 03:23 PM Moon Phase ( Waning Crescent ) |
|
| 14 April 2026 Tuesday | Sunny |
0.6 ° C (33.1°F) |
14.1 ° C (57.4°F) |
7.2 ° C (44.9°F) |
% 53 | 0% | 3 | Sunrise:06:08 AM Sunset: 07:45 PM |
Moonrise:04:53 AM Moonset: 04:40 PM Moon Phase ( Waning Crescent ) |
|
| 15 April 2026 Wednesday | Sunny |
0.5 ° C (32.9°F) |
16.6 ° C (61.9°F) |
8.6 ° C (47.4°F) |
% 46 | 0% | 3 | Sunrise:06:06 AM Sunset: 07:47 PM |
Moonrise:05:10 AM Moonset: 05:59 PM Moon Phase ( Waning Crescent ) |
|
| 16 April 2026 Thursday | Patchy rain nearby |
4.1 ° C (39.4°F) |
17.2 ° C (62.9°F) |
11.2 ° C (52.2°F) |
% 49 | 79% | 3 | Sunrise:06:04 AM Sunset: 07:48 PM |
Moonrise:05:27 AM Moonset: 07:22 PM Moon Phase ( Waning Crescent ) |
|
| 17 April 2026 Friday | Patchy rain nearby |
5.3 ° C (41.5°F) |
17.3 ° C (63.1°F) |
11.6 ° C (52.9°F) |
% 66 | 0% | 3 | Sunrise:06:02 AM Sunset: 07:50 PM |
Moonrise:05:46 AM Moonset: 08:49 PM Moon Phase ( New Moon ) |
|
| 18 April 2026 Saturday | Partly Cloudy |
2.4 ° C (36.3°F) |
16.4 ° C (61.6°F) |
9.1 ° C (48.3°F) |
% 65 | 0% | 3 | Sunrise:06:00 AM Sunset: 07:51 PM |
Moonrise:06:10 AM Moonset: 10:17 PM Moon Phase ( Waxing Crescent ) |
|
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