Rapid City, SD — Best Months Card
Best months for Rapid City: September.
JAN
36°F
Rain 6 days
Daylight 9h 13mFEB
38°F
Rain 7 days
Daylight 10h 23mMAR
48°F
Rain 7 days
Daylight 11h 47mAPR
57°F
Rain 10 days
Daylight 13h 23mMAY
66°F
Rain 13 days
Daylight 14h 44mJUN
78°F
Rain 12 days
Daylight 15h 28mJUL
86°F
Rain 10 days
Daylight 15h 11mAUG
85°F
Rain 8 days
Daylight 14h 00mSEP
76°F
★ Best
Rain 7 days
Daylight 12h 27mOCT
60°F
Rain 7 days
Daylight 10h 55mNOV
47°F
Rain 5 days
Daylight 9h 34mDEC
37°F
Rain 5 days
Daylight 8h 54m
36°F
Rain 6 days
Daylight 9h 13mFEB
38°F
Rain 7 days
Daylight 10h 23mMAR
48°F
Rain 7 days
Daylight 11h 47mAPR
57°F
Rain 10 days
Daylight 13h 23mMAY
66°F
Rain 13 days
Daylight 14h 44mJUN
78°F
Rain 12 days
Daylight 15h 28mJUL
86°F
Rain 10 days
Daylight 15h 11mAUG
85°F
Rain 8 days
Daylight 14h 00mSEP
76°F
★ Best
Rain 7 days
Daylight 12h 27mOCT
60°F
Rain 7 days
Daylight 10h 55mNOV
47°F
Rain 5 days
Daylight 9h 34mDEC
37°F
Rain 5 days
Daylight 8h 54m
Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month. Weather station used: RAPID CITY RGNL AP, SD US (NOAA station USW00024090), about 9 miles from central Rapid City, at 3160 ft elevation. All figures on this page are that station's 1991–2020 normals.
Monthly weather summaries are historical averages for trip planning only — they are not forecasts, and the weather in any given month will differ.