Alpha Weather Forecast 15 Days, Weather in Alpha Today
Current weather conditions and 15 day weather forecast for Alpha, South Dakota, 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 Alpha
| 15 May 2026 Friday 10.6 ° C / 51.1°F  Clear |
Feels Like : 8.6 ° C / 47.6°F Humidity : % 61 Pressure : 1005 mb Wind Speed : 15.1 kmph / 9.4 miles from WSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Alpha, SD, USA
Weather Forecast for next 15 Days for Alpha 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 Alpha, South Dakota 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 May 2026 Friday | Sunny |
9.9 ° C (49.8°F) |
25.8 ° C (78.5°F) |
18.5 ° C (65.4°F) |
% 36 | 0% | 7.9 | Sunrise:06:08 AM Sunset: 08:57 PM |
Moonrise:04:57 AM Moonset: 08:07 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
11 ° C (51.7°F) |
24.2 ° C (75.6°F) |
17.5 ° C (63.4°F) |
% 40 | 0% | 7.3 | Sunrise:06:07 AM Sunset: 08:58 PM |
Moonrise:05:29 AM Moonset: 09:32 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday |  Moderate rain |
12.5 ° C (54.5°F) |
22.2 ° C (71.9°F) |
16.3 ° C (61.3°F) |
% 75 | 87% | 7.2 | Sunrise:06:06 AM Sunset: 08:59 PM |
Moonrise:06:11 AM Moonset: 10:53 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Moderate rain |
5.8 ° C (42.4°F) |
14.2 ° C (57.6°F) |
9.5 ° C (49.1°F) |
% 61 | 85% | 2.3 | Sunrise:06:05 AM Sunset: 09:00 PM |
Moonrise:07:07 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday |  Patchy rain nearby |
3.9 ° C (39°F) |
21.7 ° C (71.1°F) |
8.8 ° C (47.9°F) |
% 66 | 88% | 0.1 | Sunrise:06:04 AM Sunset: 09:02 PM |
Moonrise:08:17 AM Moonset: 12:02 AM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Patchy rain nearby |
9.1 ° C (48.4°F) |
15 ° C (59°F) |
12.7 ° C (54.9°F) |
% 73 | 86% | 3 | Sunrise:06:03 AM Sunset: 09:03 PM |
Moonrise:09:36 AM Moonset: 12:55 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday |  Partly Cloudy |
5 ° C (41.1°F) |
16.8 ° C (62.3°F) |
11 ° C (51.7°F) |
% 68 | 0% | 4 | Sunrise:06:02 AM Sunset: 09:04 PM |
Moonrise:10:56 AM Moonset: 01:35 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Partly Cloudy |
9.3 ° C (48.7°F) |
17.2 ° C (62.9°F) |
13 ° C (55.4°F) |
% 66 | 0% | 4 | Sunrise:06:01 AM Sunset: 09:05 PM |
Moonrise:12:14 PM Moonset: 02:05 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Patchy rain nearby |
10 ° C (50°F) |
27.7 ° C (81.9°F) |
18.8 ° C (65.8°F) |
% 62 | 69% | 4 | Sunrise:06:00 AM Sunset: 09:06 PM |
Moonrise:01:28 PM Moonset: 02:28 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Patchy rain nearby |
17.2 ° C (63°F) |
22.3 ° C (72.2°F) |
19.1 ° C (66.4°F) |
% 78 | 84% | 4 | Sunrise:06:00 AM Sunset: 09:07 PM |
Moonrise:02:37 PM Moonset: 02:48 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 May 2026 Monday | Partly Cloudy |
13.9 ° C (57.1°F) |
17.6 ° C (63.7°F) |
16.1 ° C (60.9°F) |
% 80 | 0% | 5 | Sunrise:05:59 AM Sunset: 09:08 PM |
Moonrise:03:45 PM Moonset: 03:07 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 May 2026 Tuesday | Patchy rain nearby |
10.8 ° C (51.5°F) |
25.9 ° C (78.6°F) |
18.1 ° C (64.5°F) |
% 73 | 71% | 4 | Sunrise:05:58 AM Sunset: 09:09 PM |
Moonrise:04:51 PM Moonset: 03:24 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 May 2026 Wednesday | Patchy rain nearby |
14.6 ° C (58.2°F) |
24.5 ° C (76.2°F) |
18.8 ° C (65.9°F) |
% 68 | 70% | 4 | Sunrise:05:57 AM Sunset: 09:10 PM |
Moonrise:05:57 PM Moonset: 03:43 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 May 2026 Thursday | Sunny |
9.3 ° C (48.8°F) |
23.2 ° C (73.8°F) |
16.1 ° C (60.9°F) |
% 52 | 0% | 5 | Sunrise:05:57 AM Sunset: 09:11 PM |
Moonrise:07:04 PM Moonset: 04:03 AM Moon Phase ( Waxing Gibbous ) |
|
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