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
| 16 March 2026 Monday 5.4 ° C / 41.7°F  Overcast |
Feels Like : 3.4 ° C / 38.2°F Humidity : % 100 Pressure : 1022 mb Wind Speed : 8.6 kmph / 5.4 miles from ESE  Visibility : 16 km Precipitation (rainfall) : 2.43 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 16 March 2026 Monday |  Heavy rain |
4.5 ° C (40.2°F) |
12.7 ° C (54.9°F) |
9.6 ° C (49.4°F) |
% 87 | 89% | 0.1 | Sunrise:07:18 AM Sunset: 07:14 PM |
Moonrise:06:27 AM Moonset: 04:43 PM Moon Phase ( Waning Crescent ) |
|
| 17 March 2026 Tuesday | Heavy rain |
2.5 ° C (36.5°F) |
10 ° C (50°F) |
7.9 ° C (46.2°F) |
% 93 | 87% | 0 | Sunrise:07:16 AM Sunset: 07:16 PM |
Moonrise:06:45 AM Moonset: 06:00 PM Moon Phase ( Waning Crescent ) |
|
| 18 March 2026 Wednesday | Heavy rain |
3.2 ° C (37.8°F) |
9.9 ° C (49.8°F) |
7.4 ° C (45.2°F) |
% 93 | 87% | 2 | Sunrise:07:14 AM Sunset: 07:17 PM |
Moonrise:07:01 AM Moonset: 07:19 PM Moon Phase ( Waning Crescent ) |
|
| 19 March 2026 Thursday | Heavy rain |
5.3 ° C (41.5°F) |
10.5 ° C (50.8°F) |
8.4 ° C (47.2°F) |
% 98 | 72% | 2 | Sunrise:07:12 AM Sunset: 07:19 PM |
Moonrise:07:17 AM Moonset: 08:39 PM Moon Phase ( New Moon ) |
|
| 20 March 2026 Friday | Heavy rain |
5.8 ° C (42.4°F) |
11 ° C (51.9°F) |
10.2 ° C (50.4°F) |
% 99 | 82% | 3 | Sunrise:07:10 AM Sunset: 07:20 PM |
Moonrise:07:35 AM Moonset: 10:02 PM Moon Phase ( Waxing Crescent ) |
|
| 21 March 2026 Saturday |  Patchy rain nearby |
-3.9 ° C (24.9°F) |
5.8 ° C (42.5°F) |
2.3 ° C (36.2°F) |
% 92 | 80% | 1 | Sunrise:07:08 AM Sunset: 07:22 PM |
Moonrise:07:56 AM Moonset: 11:28 PM Moon Phase ( Waxing Crescent ) |
|
| 22 March 2026 Sunday | Patchy rain nearby |
-5.7 ° C (21.7°F) |
9.6 ° C (49.3°F) |
0.7 ° C (33.2°F) |
% 77 | 0% | 1 | Sunrise:07:05 AM Sunset: 07:23 PM |
Moonrise:08:22 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 23 March 2026 Monday |  Partly Cloudy |
-3.6 ° C (25.4°F) |
11.5 ° C (52.7°F) |
3.1 ° C (37.6°F) |
% 76 | 0% | 2 | Sunrise:07:03 AM Sunset: 07:25 PM |
Moonrise:08:58 AM Moonset: 12:53 AM Moon Phase ( Waxing Crescent ) |
|
| 24 March 2026 Tuesday |  Moderate rain |
-3.4 ° C (26°F) |
9 ° C (48.1°F) |
1.6 ° C (34.9°F) |
% 88 | 77% | 1 | Sunrise:07:01 AM Sunset: 07:26 PM |
Moonrise:09:47 AM Moonset: 02:13 AM Moon Phase ( Waxing Crescent ) |
|
| 25 March 2026 Wednesday |  Moderate or heavy snow showers |
-6.6 ° C (20.2°F) |
4.7 ° C (40.5°F) |
-1.8 ° C (28.7°F) |
% 94 | 64% | 1 | Sunrise:06:59 AM Sunset: 07:28 PM |
Moonrise:10:50 AM Moonset: 03:20 AM Moon Phase ( First Quarter ) |
|
| 26 March 2026 Thursday |  Sunny |
-6.5 ° C (20.3°F) |
12 ° C (53.6°F) |
1.7 ° C (35.1°F) |
% 91 | 0% | 2 | Sunrise:06:57 AM Sunset: 07:29 PM |
Moonrise:12:05 PM Moonset: 04:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday | Overcast |
-0.8 ° C (30.6°F) |
17.5 ° C (63.5°F) |
6.8 ° C (44.3°F) |
% 82 | 0% | 2 | Sunrise:06:55 AM Sunset: 07:31 PM |
Moonrise:01:26 PM Moonset: 04:48 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Overcast |
2.4 ° C (36.3°F) |
18.7 ° C (65.7°F) |
9.2 ° C (48.5°F) |
% 75 | 0% | 2 | Sunrise:06:53 AM Sunset: 07:32 PM |
Moonrise:02:46 PM Moonset: 05:16 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday | Patchy rain nearby |
4.2 ° C (39.5°F) |
8.6 ° C (47.5°F) |
6.8 ° C (44.3°F) |
% 94 | 82% | 2 | Sunrise:06:51 AM Sunset: 07:33 PM |
Moonrise:04:03 PM Moonset: 05:37 AM Moon Phase ( Waxing Gibbous ) |
|
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