Current weather conditions and 15 day weather forecast for Lower Monumental Dam Heliport, 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.
| 18 December 2025 Thursday 7.2 ° C / 45°F ![]() Clear |
Feels Like : 3.1 ° C / 37.7°F Humidity : % 60 Pressure : 1019 mb Wind Speed : 27.4 kmph / 17 miles from SSW ![]() Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 18 December 2025 Thursday | Heavy rain |
3 ° C (37.4°F) |
8.6 ° C (47.5°F) |
5.5 ° C (42°F) |
% 84 | 86% | 0.1 | Sunrise:07:35 AM Sunset: 04:08 PM |
Moonrise:06:51 AM Moonset: 02:39 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Partly Cloudy |
0.2 ° C (32.4°F) |
5.1 ° C (41.2°F) |
5 ° C (40.9°F) |
% 81 | 0% | 0.1 | Sunrise:07:35 AM Sunset: 04:08 PM |
Moonrise:07:50 AM Moonset: 03:27 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Overcast |
-0.8 ° C (30.6°F) |
4.4 ° C (39.9°F) |
1.8 ° C (35.3°F) |
% 77 | 0% | 0.1 | Sunrise:07:36 AM Sunset: 04:08 PM |
Moonrise:08:40 AM Moonset: 04:24 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
0.5 ° C (32.9°F) |
8.1 ° C (46.6°F) |
3.8 ° C (38.8°F) |
% 65 | 65% | 0.1 | Sunrise:07:36 AM Sunset: 04:09 PM |
Moonrise:09:21 AM Moonset: 05:30 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Patchy rain nearby |
3.1 ° C (37.5°F) |
8.6 ° C (47.5°F) |
5 ° C (41°F) |
% 74 | 88% | 0 | Sunrise:07:37 AM Sunset: 04:09 PM |
Moonrise:09:53 AM Moonset: 06:40 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Partly Cloudy |
1.2 ° C (34.2°F) |
5 ° C (41.1°F) |
3.4 ° C (38.2°F) |
% 74 | 0% | 2 | Sunrise:07:37 AM Sunset: 04:10 PM |
Moonrise:10:18 AM Moonset: 07:53 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Sunny |
-2.3 ° C (27.8°F) |
2.7 ° C (36.9°F) |
-0.3 ° C (31.5°F) |
% 68 | 0% | 2 | Sunrise:07:38 AM Sunset: 04:11 PM |
Moonrise:10:38 AM Moonset: 09:05 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Sunny |
-1.7 ° C (28.9°F) |
3.7 ° C (38.7°F) |
0.2 ° C (32.3°F) |
% 53 | 0% | 2 | Sunrise:07:38 AM Sunset: 04:11 PM |
Moonrise:10:56 AM Moonset: 10:17 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Sunny |
-3 ° C (26.6°F) |
1.7 ° C (35.1°F) |
-1.4 ° C (29.5°F) |
% 63 | 0% | 2 | Sunrise:07:38 AM Sunset: 04:12 PM |
Moonrise:11:13 AM Moonset: 11:31 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Partly Cloudy |
-1.6 ° C (29.1°F) |
3.4 ° C (38°F) |
0.1 ° C (32.2°F) |
% 61 | 0% | 2 | Sunrise:07:38 AM Sunset: 04:13 PM |
Moonrise:11:30 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
-2.2 ° C (28.1°F) |
3 ° C (37.4°F) |
-0.7 ° C (30.8°F) |
% 71 | 0% | 2 | Sunrise:07:39 AM Sunset: 04:13 PM |
Moonrise:11:48 AM Moonset: 12:47 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
-2.5 ° C (27.4°F) |
2.7 ° C (36.8°F) |
-0.8 ° C (30.5°F) |
% 79 | 0% | 2 | Sunrise:07:39 AM Sunset: 04:14 PM |
Moonrise:12:10 PM Moonset: 02:07 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
-1.7 ° C (28.9°F) |
2.9 ° C (37.3°F) |
-0.2 ° C (31.7°F) |
% 80 | 0% | 2 | Sunrise:07:39 AM Sunset: 04:15 PM |
Moonrise:12:38 PM Moonset: 03:31 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Partly Cloudy |
-1 ° C (30.3°F) |
5.2 ° C (41.4°F) |
1.6 ° C (34.8°F) |
% 80 | 0% | 2 | Sunrise:07:39 AM Sunset: 04:16 PM |
Moonrise:01:16 PM Moonset: 04:57 AM Moon Phase ( Waxing Gibbous ) |
|