How old are the roofs in Rapid City, SD, and is yours due?
A median Rapid City house dates from 1978: an original roof would be 48 years old, past the 20 to 30 years architectural shingles are rated for. 53% of homes predate 1980, so Rapid City has many second or third roofs. Enter material and install year to see where your Rapid City roof sits.
Left empty, the calculator assumes an original roof from 1978.
The homes under the roofs in Rapid City
| Median year homes were built | 1978 |
|---|---|
| Homes built before 1980 | 52.8% |
| Housing units | 34,751 |
| Owner-occupied homes | 61.6% |
| Single-family homes | 64.5% |
Rapid City is the only South Dakota city in our data, with a median build year of 1978.
Weather on Rapid City roofs
Rapid City is highest against other cities on hail days, 1 in+: 158 against a median of 16, above 99% of cities. It is lowest on rain days, 1 in+: 1.1 against 6.8, above 7%.
| Measure | Rapid City | Median, 209 cities | Above |
|---|---|---|---|
| Hail days, 1 in+ (2014 to 2026) | 158 | 16 | 99% |
| Largest hail (in) | 4.5 | 2.8 | 93% |
| Freeze-thaw days (a year) | 119 | 65 | 93% |
| Days at 90°F+ (a year) | 41 | 40 | 52% |
| Rain days, 1 in+ (a year) | 1.1 | 6.8 | 7% |
| Median year built (year) | 1978 | 1979 | 41% |
Hail reports by month, 2014 to June 2026
Jul brings 288 of the 745 hail reports in Rapid City's county; Jun, Jul, Aug together hold 86%.
What it means for a Rapid City roof
- 158 days of 1 inch hail put Rapid City above 99% of cities (median 16). Inspect after each large hail day and photograph your Rapid City roof before and after storm season.
- 119 freeze-thaw days a year, against a median of 65: water behind flashing widens gaps each cycle, so have valleys and eaves checked.
- Calculator ranges are planning figures; for Rapid City roofs, warranty and inspection decide.
roof replacement cost in Rapid City · hail history for Rapid City · hail claim checklist
Sources
Rapid City figures come from Census ACS, NOAA Storm Events and NASA POWER; method here. Rapid City is general information only.