Keystone Weather Forecast 15 Days, Weather in Keystone Today
Current weather conditions and 15 day weather forecast for Keystone, 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 Keystone
| 26 March 2026 Thursday 5.9 ° C / 42.7°F  Cloudy |
Feels Like : 2.7 ° C / 36.8°F Humidity : % 90 Pressure : 1011 mb Wind Speed : 14.8 kmph / 9.2 miles from NNE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 71 |
15 day weather forecast for Keystone, SD, USA
Weather Forecast for next 15 Days for Keystone 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 Keystone, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 March 2026 Thursday |  Patchy rain nearby |
2.4 ° C (36.3°F) |
7.6 ° C (45.7°F) |
6.7 ° C (44°F) |
% 73 | 85% | 0.3 | Sunrise:06:46 AM Sunset: 07:14 PM |
Moonrise:12:08 PM Moonset: 03:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday |  Sunny |
-2.9 ° C (26.8°F) |
8.9 ° C (48°F) |
2.4 ° C (36.3°F) |
% 43 | 0% | 1.5 | Sunrise:06:44 AM Sunset: 07:16 PM |
Moonrise:01:24 PM Moonset: 04:17 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Sunny |
1.5 ° C (34.7°F) |
19.4 ° C (66.9°F) |
9.9 ° C (49.8°F) |
% 48 | 0% | 1.4 | Sunrise:06:43 AM Sunset: 07:17 PM |
Moonrise:02:40 PM Moonset: 04:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday | Sunny |
7.1 ° C (44.7°F) |
21.9 ° C (71.4°F) |
13.9 ° C (57°F) |
% 25 | 0% | 1.5 | Sunrise:06:41 AM Sunset: 07:18 PM |
Moonrise:03:54 PM Moonset: 05:15 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 March 2026 Monday | Sunny |
3 ° C (37.4°F) |
21 ° C (69.9°F) |
10.2 ° C (50.3°F) |
% 39 | 0% | 0 | Sunrise:06:39 AM Sunset: 07:19 PM |
Moonrise:05:05 PM Moonset: 05:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 March 2026 Tuesday | Patchy rain nearby |
8.6 ° C (47.4°F) |
19.6 ° C (67.4°F) |
14.2 ° C (57.5°F) |
% 38 | 85% | 3 | Sunrise:06:37 AM Sunset: 07:21 PM |
Moonrise:06:13 PM Moonset: 05:55 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 April 2026 Wednesday |  Heavy snow |
-2.9 ° C (26.8°F) |
1.6 ° C (34.9°F) |
0.2 ° C (32.4°F) |
% 88 | 84% | 1 | Sunrise:06:35 AM Sunset: 07:22 PM |
Moonrise:07:21 PM Moonset: 06:13 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday |  Mist |
-8.4 ° C (16.8°F) |
1.3 ° C (34.3°F) |
-3.7 ° C (25.4°F) |
% 84 | 66% | 1 | Sunrise:06:33 AM Sunset: 07:23 PM |
Moonrise:08:28 PM Moonset: 06:31 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday | Sunny |
-7 ° C (19.5°F) |
10.3 ° C (50.5°F) |
1.9 ° C (35.4°F) |
% 70 | 0% | 2 | Sunrise:06:32 AM Sunset: 07:24 PM |
Moonrise:09:36 PM Moonset: 06:51 AM Moon Phase ( Waning Gibbous ) |
|
| 04 April 2026 Saturday | Sunny |
1.7 ° C (35°F) |
16.5 ° C (61.7°F) |
8.9 ° C (48°F) |
% 47 | 0% | 3 | Sunrise:06:30 AM Sunset: 07:25 PM |
Moonrise:10:43 PM Moonset: 07:15 AM Moon Phase ( Waning Gibbous ) |
|
| 05 April 2026 Sunday | Patchy rain nearby |
6.5 ° C (43.7°F) |
15.4 ° C (59.7°F) |
10.3 ° C (50.6°F) |
% 48 | 0% | 3 | Sunrise:06:28 AM Sunset: 07:27 PM |
Moonrise:11:48 PM Moonset: 07:43 AM Moon Phase ( Waning Gibbous ) |
|
| 06 April 2026 Monday | Patchy rain nearby |
-0.5 ° C (31.1°F) |
6.5 ° C (43.7°F) |
4.6 ° C (40.3°F) |
% 86 | 82% | 1 | Sunrise:06:26 AM Sunset: 07:28 PM |
Moonrise:No moonrise Moonset: 08:16 AM Moon Phase ( Waning Gibbous ) |
|
| 07 April 2026 Tuesday |  Light freezing rain |
-4 ° C (24.8°F) |
3.6 ° C (38.5°F) |
-0.9 ° C (30.4°F) |
% 69 | 81% | 1 | Sunrise:06:25 AM Sunset: 07:29 PM |
Moonrise:12:49 AM Moonset: 08:59 AM Moon Phase ( Waning Gibbous ) |
|
| 08 April 2026 Wednesday |  Partly Cloudy |
-5.4 ° C (22.2°F) |
6.3 ° C (43.3°F) |
0.3 ° C (32.6°F) |
% 64 | 0% | 2 | Sunrise:06:23 AM Sunset: 07:30 PM |
Moonrise:01:44 AM Moonset: 09:50 AM Moon Phase ( Waning Gibbous ) |
|
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