Rapid City Airport (RAP) Weather 09/21/2025
This Afternoon
70
Mostly Sunny
Tonight
46
Partly Cloudy
Saturday
79
Patchy Fog then Sunny
Saturday Night
50
Mostly Clear
Sunday
84
Sunny
Sunday Night
53
Partly Cloudy
Monday
77
Mostly Sunny then Chance Showers and Breezy
Monday Night
50
Chance Showers
Tuesday
71
Chance Showers
Tuesday Night
48
Slight Chance Showers then Partly Cloudy
Wednesday
76
Sunny
Wednesday Night
49
Mostly Clear
Thursday
80
Sunny
Weekly Forecast
This Afternoon
Mostly sunny, with a high near 70. North wind around 5 mph, with gusts as high as 15 mph.
Tonight
Partly cloudy, with a low around 46. Northeast wind around 5 mph becoming calm after midnight.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 50. East wind around 5 mph becoming west after midnight.
Sunday
Sunny, with a high near 84. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 53. East wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.
Monday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 77. Breezy, with a north wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 50. Northwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday
A chance of showers, mainly before noon. Partly sunny, with a high near 71.
Tuesday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 48.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 80.