August 2026 Weather | Rapid City, South Dakota

Today 8/12
Stormy Weather
Day 79°
Night 61°
60
Thu 8/13
Stormy Weather
Day 73°
Night 63°
70
Fri 8/14
Stormy Weather
Day 81°
Night 61°
88
Sat 8/15
Cloudy Weather
Day 75°
Night 59°
25
Sun 8/16
Cloudy Weather
Day 81°
Night 61°
25
Mon 8/17
Cloudy Weather
Day 84°
Night 66°
17
Tue 8/18
Cloudy Weather
Day 86°
Night 66°
25
Wed 8/19
Sunny with a Chance of Thunderstorms
Day 81°
Night 63°
77
Thu 8/20
Cloudy Weather
Day 84°
Night 64°
49
Fri 8/21
Stormy Weather
Day 81°
Night 61°
67
Sat 8/22
Stormy Weather
Day 79°
Night 61°
74
Sun 8/23
Cloudy Weather
Day 81°
Night 63°
55
Mon 8/24
Cloudy Weather
Day 82°
Night 61°
55
Tue 8/25
Cloudy Weather
Day 82°
Night 57°
25
Wed 8/26
Rainy Weather
Day 86°
Night 64°
55
Thu 8/27
Cloudy Weather
Day 81°
Night 64°
Fri 8/28
Cloudy Weather
Day 75°
Night 63°
Sat 8/29
Cloudy Weather
Day 77°
Night 63°
Sun 8/30
Cloudy Weather
Day 79°
Night 63°
Mon 8/31
Cloudy Weather
Day 81°
Night 61°