Index Weather Forecast 15 Days, Weather in Index Today
Current weather conditions and 15 day weather forecast for Index, 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 Index
| 05 December 2025 Friday 6.7 ° C / 44.1°F  Overcast |
Feels Like : 6.1 ° C / 43°F Humidity : % 96 Pressure : 1018 mb Wind Speed : 4.7 kmph / 2.9 miles from ESE  Visibility : 16 km Precipitation (rainfall) : 0.79 mm Cloud (%) : 100 |
15 day weather forecast for Index, WA, USA
Weather Forecast for next 15 Days for Index 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 Index, 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 December 2025 Friday |  Heavy rain |
7 ° C (44.6°F) |
11.5 ° C (52.7°F) |
8.5 ° C (47.3°F) |
% 93 | 90% | 0 | Sunrise:07:41 AM Sunset: 04:15 PM |
Moonrise:04:38 PM Moonset: 09:07 AM Moon Phase ( Full Moon ) |
|
| 06 December 2025 Saturday | Heavy rain |
4.7 ° C (40.4°F) |
7.4 ° C (45.3°F) |
6.7 ° C (44°F) |
% 98 | 87% | 0 | Sunrise:07:42 AM Sunset: 04:15 PM |
Moonrise:05:54 PM Moonset: 10:09 AM Moon Phase ( Waning Gibbous ) |
|
| 07 December 2025 Sunday |  Moderate rain |
0.9 ° C (33.6°F) |
7.3 ° C (45.1°F) |
5.1 ° C (41.2°F) |
% 94 | 86% | 0 | Sunrise:07:43 AM Sunset: 04:14 PM |
Moonrise:07:18 PM Moonset: 10:53 AM Moon Phase ( Waning Gibbous ) |
|
| 08 December 2025 Monday | Moderate rain |
6.2 ° C (43.1°F) |
10.2 ° C (50.4°F) |
7.5 ° C (45.6°F) |
% 93 | 88% | 0 | Sunrise:07:44 AM Sunset: 04:14 PM |
Moonrise:08:41 PM Moonset: 11:24 AM Moon Phase ( Waning Gibbous ) |
|
| 09 December 2025 Tuesday | Moderate rain |
2.2 ° C (36°F) |
8 ° C (46.4°F) |
5.2 ° C (41.4°F) |
% 96 | 63% | 0 | Sunrise:07:45 AM Sunset: 04:14 PM |
Moonrise:10:00 PM Moonset: 11:47 AM Moon Phase ( Waning Gibbous ) |
|
| 10 December 2025 Wednesday |  Patchy rain nearby |
0.5 ° C (32.9°F) |
4.8 ° C (40.6°F) |
2.6 ° C (36.7°F) |
% 96 | 85% | 1 | Sunrise:07:46 AM Sunset: 04:14 PM |
Moonrise:11:14 PM Moonset: 12:05 PM Moon Phase ( Waning Gibbous ) |
|
| 11 December 2025 Thursday |  Light rain shower |
-3.3 ° C (26.1°F) |
5.1 ° C (41.3°F) |
0.9 ° C (33.7°F) |
% 97 | 86% | 1 | Sunrise:07:47 AM Sunset: 04:14 PM |
Moonrise:No moonrise Moonset: 12:20 PM Moon Phase ( Last Quarter ) |
|
| 12 December 2025 Friday | Moderate rain |
1.2 ° C (34.2°F) |
3.6 ° C (38.5°F) |
2.1 ° C (35.8°F) |
% 92 | 84% | 1 | Sunrise:07:48 AM Sunset: 04:14 PM |
Moonrise:12:24 AM Moonset: 12:34 PM Moon Phase ( Waning Crescent ) |
|
| 13 December 2025 Saturday |  Light sleet showers |
-4.1 ° C (24.6°F) |
3.1 ° C (37.5°F) |
0.5 ° C (32.9°F) |
% 95 | 89% | 1 | Sunrise:07:49 AM Sunset: 04:14 PM |
Moonrise:01:33 AM Moonset: 12:48 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday |  Patchy moderate snow |
-6.8 ° C (19.8°F) |
2.7 ° C (36.8°F) |
-2.6 ° C (27.4°F) |
% 91 | 61% | 1 | Sunrise:07:49 AM Sunset: 04:14 PM |
Moonrise:02:40 AM Moonset: 01:03 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday | Patchy moderate snow |
-4.3 ° C (24.3°F) |
1.2 ° C (34.1°F) |
-2.2 ° C (28°F) |
% 93 | 62% | 1 | Sunrise:07:50 AM Sunset: 04:15 PM |
Moonrise:03:48 AM Moonset: 01:21 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Patchy moderate snow |
-4.9 ° C (23.2°F) |
0.3 ° C (32.5°F) |
-2.5 ° C (27.6°F) |
% 90 | 80% | 1 | Sunrise:07:51 AM Sunset: 04:15 PM |
Moonrise:04:57 AM Moonset: 01:42 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Heavy snow |
-4.8 ° C (23.4°F) |
-0.5 ° C (31.1°F) |
-2.6 ° C (27.2°F) |
% 93 | 66% | 1 | Sunrise:07:52 AM Sunset: 04:15 PM |
Moonrise:06:05 AM Moonset: 02:10 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Cloudy |
-10.1 ° C (13.8°F) |
-1.4 ° C (29.4°F) |
-6.6 ° C (20.1°F) |
% 91 | 0% | 1 | Sunrise:07:52 AM Sunset: 04:16 PM |
Moonrise:07:11 AM Moonset: 02:46 PM Moon Phase ( Waning Crescent ) |
|
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