Current weather conditions and 15 day weather forecast for Castle Butte, 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.
| 11 May 2026 Monday 7.8 ° C / 46°F ![]() Clear |
Feels Like : 4.6 ° C / 40.2°F Humidity : % 63 Pressure : 1020 mb Wind Speed : 20.5 kmph / 12.8 miles from SE ![]() Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 May 2026 Sunday | Sunny |
6.1 ° C (43°F) |
24.3 ° C (75.7°F) |
14.7 ° C (58.5°F) |
% 46 | 0% | 6.9 | Sunrise:05:28 AM Sunset: 08:01 PM |
Moonrise:02:22 AM Moonset: 12:58 PM Moon Phase ( Waning Crescent ) |
|
| 11 May 2026 Monday | Sunny |
8.9 ° C (48°F) |
33.2 ° C (91.8°F) |
20.7 ° C (69.2°F) |
% 35 | 0% | 7.7 | Sunrise:05:27 AM Sunset: 08:02 PM |
Moonrise:02:42 AM Moonset: 02:08 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday | Patchy rain nearby |
13.4 ° C (56.1°F) |
23.5 ° C (74.3°F) |
18.1 ° C (64.7°F) |
% 36 | 63% | 7.6 | Sunrise:05:26 AM Sunset: 08:03 PM |
Moonrise:03:02 AM Moonset: 03:20 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Sunny |
11 ° C (51.9°F) |
30.1 ° C (86.2°F) |
20.6 ° C (69.1°F) |
% 34 | 0% | 8 | Sunrise:05:24 AM Sunset: 08:04 PM |
Moonrise:03:23 AM Moonset: 04:34 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
18.5 ° C (65.4°F) |
35.7 ° C (96.3°F) |
26.1 ° C (79°F) |
% 33 | 0% | 7.3 | Sunrise:05:23 AM Sunset: 08:05 PM |
Moonrise:03:45 AM Moonset: 05:54 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Patchy rain nearby |
16.7 ° C (62.1°F) |
30.7 ° C (87.3°F) |
22 ° C (71.5°F) |
% 48 | 50% | 0 | Sunrise:05:22 AM Sunset: 08:06 PM |
Moonrise:04:11 AM Moonset: 07:17 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Patchy rain nearby |
16.4 ° C (61.6°F) |
29.7 ° C (85.5°F) |
20.8 ° C (69.4°F) |
% 63 | 85% | 5 | Sunrise:05:21 AM Sunset: 08:08 PM |
Moonrise:04:44 AM Moonset: 08:41 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Sunny |
15.1 ° C (59.2°F) |
23.9 ° C (75.1°F) |
18.9 ° C (66°F) |
% 53 | 0% | 5 | Sunrise:05:20 AM Sunset: 08:09 PM |
Moonrise:05:27 AM Moonset: 10:01 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Partly Cloudy |
12 ° C (53.7°F) |
23.6 ° C (74.6°F) |
18.3 ° C (64.9°F) |
% 42 | 0% | 5 | Sunrise:05:19 AM Sunset: 08:10 PM |
Moonrise:06:23 AM Moonset: 11:10 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Sunny |
15.7 ° C (60.3°F) |
30.1 ° C (86.2°F) |
22.6 ° C (72.6°F) |
% 46 | 0% | 6 | Sunrise:05:18 AM Sunset: 08:11 PM |
Moonrise:07:33 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Sunny |
15.8 ° C (60.5°F) |
34.2 ° C (93.5°F) |
24.6 ° C (76.3°F) |
% 40 | 0% | 6 | Sunrise:05:17 AM Sunset: 08:12 PM |
Moonrise:08:51 AM Moonset: 12:04 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Sunny |
17.8 ° C (64°F) |
30.2 ° C (86.4°F) |
23.8 ° C (74.9°F) |
% 43 | 0% | 6 | Sunrise:05:16 AM Sunset: 08:13 PM |
Moonrise:10:11 AM Moonset: 12:44 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Sunny |
14.2 ° C (57.6°F) |
28.9 ° C (84°F) |
21.8 ° C (71.2°F) |
% 41 | 0% | 6 | Sunrise:05:16 AM Sunset: 08:14 PM |
Moonrise:11:28 AM Moonset: 01:15 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Sunny |
20.4 ° C (68.8°F) |
37.1 ° C (98.8°F) |
26.1 ° C (79°F) |
% 41 | 0% | 7 | Sunrise:05:15 AM Sunset: 08:15 PM |
Moonrise:12:40 PM Moonset: 01:39 AM Moon Phase ( First Quarter ) |
|