Summit Weather Forecast 15 Days, Weather in Summit Today
Current weather conditions and 15 day weather forecast for Summit, 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 Summit
| 15 December 2025 Monday 12.1 ° C / 53.8°F  Overcast |
Feels Like : 12.6 ° C / 54.6°F Humidity : % 88 Pressure : 1016 mb Wind Speed : 3.6 kmph / 2.2 miles from S  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Summit, WA, USA
Weather Forecast for next 15 Days for Summit 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 Summit, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 December 2025 Sunday |  Patchy rain nearby |
6.7 ° C (44.1°F) |
12.6 ° C (54.7°F) |
9.5 ° C (49.1°F) |
% 80 | 83% | 0.1 | Sunrise:07:49 AM Sunset: 04:19 PM |
Moonrise:02:41 AM Moonset: 01:07 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Moderate rain |
8.8 ° C (47.8°F) |
14.4 ° C (57.9°F) |
12.7 ° C (54.9°F) |
% 78 | 86% | 0 | Sunrise:07:50 AM Sunset: 04:19 PM |
Moonrise:03:48 AM Moonset: 01:25 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Moderate rain |
8.5 ° C (47.3°F) |
11.8 ° C (53.2°F) |
9.9 ° C (49.8°F) |
% 87 | 84% | 0 | Sunrise:07:50 AM Sunset: 04:20 PM |
Moonrise:04:56 AM Moonset: 01:47 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Moderate rain |
3.6 ° C (38.4°F) |
6.6 ° C (43.9°F) |
5 ° C (41.1°F) |
% 86 | 86% | 0 | Sunrise:07:51 AM Sunset: 04:20 PM |
Moonrise:06:04 AM Moonset: 02:15 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Moderate rain |
2.5 ° C (36.5°F) |
6 ° C (42.8°F) |
4.7 ° C (40.5°F) |
% 89 | 89% | 0 | Sunrise:07:52 AM Sunset: 04:20 PM |
Moonrise:07:10 AM Moonset: 02:52 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Patchy rain nearby |
2.2 ° C (36°F) |
5.7 ° C (42.3°F) |
3.7 ° C (38.7°F) |
% 87 | 87% | 1 | Sunrise:07:52 AM Sunset: 04:21 PM |
Moonrise:08:09 AM Moonset: 03:39 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Moderate rain |
2.4 ° C (36.3°F) |
5.6 ° C (42.1°F) |
4 ° C (39.3°F) |
% 92 | 88% | 1 | Sunrise:07:53 AM Sunset: 04:21 PM |
Moonrise:08:59 AM Moonset: 04:37 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
1.2 ° C (34.2°F) |
5.5 ° C (41.8°F) |
3.9 ° C (39°F) |
% 89 | 86% | 1 | Sunrise:07:53 AM Sunset: 04:22 PM |
Moonrise:09:39 AM Moonset: 05:43 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Patchy rain nearby |
-0 ° C (32°F) |
4.3 ° C (39.7°F) |
1.7 ° C (35°F) |
% 85 | 89% | 1 | Sunrise:07:54 AM Sunset: 04:22 PM |
Moonrise:10:10 AM Moonset: 06:54 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Moderate rain |
-0.6 ° C (31°F) |
3.1 ° C (37.6°F) |
1.7 ° C (35°F) |
% 92 | 85% | 1 | Sunrise:07:54 AM Sunset: 04:23 PM |
Moonrise:10:35 AM Moonset: 08:07 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Moderate or heavy snow in area with thunder |
-2.4 ° C (27.7°F) |
0.1 ° C (32.2°F) |
-0.7 ° C (30.7°F) |
% 92 | 80% | 1 | Sunrise:07:54 AM Sunset: 04:23 PM |
Moonrise:10:55 AM Moonset: 09:20 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Light freezing rain |
-6.9 ° C (19.5°F) |
-1 ° C (30.1°F) |
-3.5 ° C (25.7°F) |
% 83 | 89% | 1 | Sunrise:07:55 AM Sunset: 04:24 PM |
Moonrise:11:12 AM Moonset: 10:33 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Light snow |
-7.4 ° C (18.7°F) |
-4.2 ° C (24.5°F) |
-6.2 ° C (20.9°F) |
% 83 | 69% | 1 | Sunrise:07:55 AM Sunset: 04:25 PM |
Moonrise:11:28 AM Moonset: 11:47 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Overcast |
-7.5 ° C (18.5°F) |
0.4 ° C (32.8°F) |
-3.2 ° C (26.3°F) |
% 81 | 0% | 1 | Sunrise:07:55 AM Sunset: 04:26 PM |
Moonrise:11:45 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
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