River Sioux Weather Forecast 15 Days, Weather in River Sioux Today
Current weather conditions and 15 day weather forecast for River Sioux, Iowa, 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 River Sioux
| 18 September 2026 Friday 19.5 ° C / 67.1°F  Light rain shower |
Feels Like : 19.2 ° C / 66.6°F Humidity : % 97 Pressure : 1016 mb Wind Speed : 18.4 kmph / 11.4 miles from SE  Visibility : 10 km Precipitation (rainfall) : 0.27 mm Cloud (%) : 98 |
15 day weather forecast for River Sioux, IA, USA
Weather Forecast for next 15 Days for River Sioux 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 River Sioux, Iowa 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 18 September 2026 Friday | Light rain shower |
19.2 ° C (66.6°F) |
33.6 ° C (92.5°F) |
25 ° C (77.1°F) |
% 74 | 74% | 6.5 | Sunrise:07:07 AM Sunset: 07:29 PM |
Moonrise:03:29 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 19 September 2026 Saturday |  Patchy rain nearby |
16.4 ° C (61.6°F) |
23.1 ° C (73.6°F) |
20.2 ° C (68.4°F) |
% 88 | 81% | 4 | Sunrise:07:08 AM Sunset: 07:27 PM |
Moonrise:04:13 PM Moonset: 12:00 AM Moon Phase ( First Quarter ) |
|
| 20 September 2026 Sunday | Patchy rain nearby |
12.6 ° C (54.7°F) |
16 ° C (60.8°F) |
13.7 ° C (56.6°F) |
% 93 | 78% | 1.3 | Sunrise:07:09 AM Sunset: 07:25 PM |
Moonrise:04:50 PM Moonset: 01:00 AM Moon Phase ( Waxing Gibbous ) |
|
| 21 September 2026 Monday | Patchy rain nearby |
10.6 ° C (51.2°F) |
12.9 ° C (55.2°F) |
11.8 ° C (53.3°F) |
% 93 | 80% | 0.9 | Sunrise:07:10 AM Sunset: 07:23 PM |
Moonrise:05:19 PM Moonset: 02:03 AM Moon Phase ( Waxing Gibbous ) |
|
| 22 September 2026 Tuesday |  Overcast |
10 ° C (49.9°F) |
16.3 ° C (61.3°F) |
12.7 ° C (54.8°F) |
% 82 | 30% | 4 | Sunrise:07:11 AM Sunset: 07:22 PM |
Moonrise:05:44 PM Moonset: 03:07 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 September 2026 Wednesday | Overcast |
11.4 ° C (52.5°F) |
18 ° C (64.3°F) |
14.8 ° C (58.6°F) |
% 83 | 72% | 4 | Sunrise:07:12 AM Sunset: 07:20 PM |
Moonrise:06:06 PM Moonset: 04:10 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 September 2026 Thursday | Overcast |
13.9 ° C (57.1°F) |
18.7 ° C (65.6°F) |
16 ° C (60.9°F) |
% 89 | 75% | 4 | Sunrise:07:13 AM Sunset: 07:18 PM |
Moonrise:06:25 PM Moonset: 05:12 AM Moon Phase ( Full Moon ) |
|
| 25 September 2026 Friday | Overcast |
16.2 ° C (61.1°F) |
19.9 ° C (67.9°F) |
18.1 ° C (64.6°F) |
% 85 | 29% | 4 | Sunrise:07:14 AM Sunset: 07:16 PM |
Moonrise:06:44 PM Moonset: 06:14 AM Moon Phase ( Full Moon ) |
|
| 26 September 2026 Saturday | Patchy rain nearby |
15.6 ° C (60.1°F) |
18.3 ° C (64.9°F) |
16.6 ° C (61.9°F) |
% 88 | 73% | 5 | Sunrise:07:15 AM Sunset: 07:15 PM |
Moonrise:07:04 PM Moonset: 07:17 AM Moon Phase ( Full Moon ) |
|
| 27 September 2026 Sunday | Overcast |
14.8 ° C (58.7°F) |
25.8 ° C (78.5°F) |
20.3 ° C (68.5°F) |
% 76 | 80% | 6 | Sunrise:07:16 AM Sunset: 07:13 PM |
Moonrise:07:25 PM Moonset: 08:22 AM Moon Phase ( Waning Gibbous ) |
|
| 28 September 2026 Monday | Overcast |
20.5 ° C (68.9°F) |
27.7 ° C (81.8°F) |
23.1 ° C (73.6°F) |
% 66 | 60% | 6 | Sunrise:07:18 AM Sunset: 07:11 PM |
Moonrise:07:49 PM Moonset: 09:29 AM Moon Phase ( Waning Gibbous ) |
|
| 29 September 2026 Tuesday | Patchy rain nearby |
17.7 ° C (63.9°F) |
23.4 ° C (74.2°F) |
19.8 ° C (67.6°F) |
% 79 | 76% | 6 | Sunrise:07:19 AM Sunset: 07:09 PM |
Moonrise:08:19 PM Moonset: 10:38 AM Moon Phase ( Waning Gibbous ) |
|
| 30 September 2026 Wednesday |  Cloudy |
11.7 ° C (53.1°F) |
17.9 ° C (64.2°F) |
15 ° C (58.9°F) |
% 54 | 11% | 5 | Sunrise:07:20 AM Sunset: 07:08 PM |
Moonrise:08:55 PM Moonset: 11:49 AM Moon Phase ( Waning Gibbous ) |
|
| 01 October 2026 Thursday |  Sunny |
7.9 ° C (46.1°F) |
15.1 ° C (59.2°F) |
11.3 ° C (52.4°F) |
% 54 | 4% | 5 | Sunrise:07:21 AM Sunset: 07:06 PM |
Moonrise:09:42 PM Moonset: 12:59 PM Moon Phase ( Last Quarter ) |
|
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