Climate averages 1991–2020
Rapid City weather
in June.
A warm, wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Rapid City: daytime highs average 24.4°C and nights cool to about 12.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 97 mm of rain on roughly 15 days, which makes June a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 26 min on an average June day.
The nearest other city in this atlas is Bismarck (358 km away). In June its highs average 23.6°C, 0.8°C cooler than Rapid City, with 96 mm of rain.
Among the 498 cities listed in the United States, Rapid City ranks joint 426th of 498 for the warmest June highs and joint 314th of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; Rapid City is 3.5°C cooler than that mean.
From June to July, average highs rise by 4.4°C to 28.9°C, and monthly rainfall falls from 97 mm to 78 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rapid City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.5°C-8.1°C | -8.1°C | 13 | 3.9 | 9.39 h |
| February | 3.5°C-7.6°C | -7.6°C | 20 | 5.1 | 10.410 h |
| March | 8.5°C-3.5°C | -3.5°C | 40 | 7.6 | 11.912 h |
| April | 12.8°C1.1°C | 1.1°C | 80 | 11.8 | 13.413 h |
| May | 18.4°C7.2°C | 7.2°C | 112 | 14.1 | 14.715 h |
| June, selected | 24.4°C12.9°C | 12.9°C | 97 | 14.5 | 15.415 h |
| July | 28.9°C16.9°C | 16.9°C | 78 | 13.4 | 15.115 h |
| August | 28.2°C16.1°C | 16.1°C | 60 | 10.8 | 14.014 h |
| September | 23.3°C11.2°C | 11.2°C | 42 | 6.7 | 12.613 h |
| October | 14.9°C3.9°C | 3.9°C | 50 | 7.3 | 11.011 h |
| November | 7.9°C-2.5°C | -2.5°C | 20 | 4.4 | 9.710 h |
| December | 2.8°C-6.9°C | -6.9°C | 15 | 3.6 | 9.09 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Bismarck in JuneUnited States · 358 kmHigh 23.6°C · Low 13.3°C · 96 mm rain
- Fort Collins in JuneUnited States · 417 kmHigh 25.6°C · Low 11.1°C · 54 mm rain
- Greeley in JuneUnited States · 424 kmHigh 28.3°C · Low 13.3°C · 40 mm rain
- Loveland in JuneUnited States · 437 kmHigh 25.7°C · Low 11.0°C · 54 mm rain
- Billings in JuneUnited States · 456 kmHigh 24.9°C · Low 12.0°C · 53 mm rain
- Longmont in JuneUnited States · 462 kmHigh 26.0°C · Low 11.4°C · 53 mm rain
- Boulder in JuneUnited States · 482 kmHigh 25.6°C · Low 10.8°C · 77 mm rain
- Thornton in JuneUnited States · 490 kmHigh 25.9°C · Low 10.8°C · 52 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rapid City) is explained once on the Rapid City year overview and on the Sources, method and limits page.