Rapid City, SD Hourly Forecast
Rapid City temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 4 PM - around 96°
- Coolest hour: 6 AM - around 61°
- Rain risk: low all day (peaks at 2%)
- UV peak: 1 PM at index 8 - sun protection recommended
- Windiest: 3 PM at 11 mph
Rapid City hourly weather - Thursday, August 6
In Rapid City, expect a high near 96°F (35°C) around 4 PM and a low of 79°F (26°C) near 11 PM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 1 PM | Sunny | 92° | 86° | 0% | 10 mph ENE | 24% | 8 | |
| 2 PM | Sunny | 94° | 87° | 0% | 11 mph ENE | 20% | 7 | |
| 3 PM | Sunny | 95° | 87° | 0% | 11 mph ENE | 16% | 6 | |
| 4 PM | Sunny | 96° | 88° | 0% | 10 mph E | 15% | 4 | |
| 5 PM | Sunny | 96° | 90° | 0% | 6 mph E | 13% | 2 | |
| 6 PM | Sunny | 95° | 88° | 0% | 6 mph NE | 13% | 1 | |
| 7 PM | Sunny | 94° | 85° | 0% | 10 mph NNE | 13% | 0 | |
| 8 PM | Sunny | 91° | 83° | 0% | 8 mph NNW | 11% | 0 | |
| 9 PM | Clear | 84° | 75° | 0% | 8 mph NW | 12% | 0 | |
| 10 PM | Clear | 81° | 71° | 0% | 9 mph WNW | 11% | 0 | |
| 11 PM | Clear | 79° | 69° | 0% | 9 mph WNW | 12% | 0 |
Rapid City hourly weather - Friday, August 7
In Rapid City, expect a high near 91°F (33°C) around 4 PM and a low of 61°F (16°C) near 6 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 70° | 60° | 0% | 9 mph WNW | 16% | 0 | |
| 1 AM | Clear | 69° | 60° | 0% | 9 mph WNW | 18% | 0 | |
| 2 AM | Clear | 68° | 58° | 1% | 10 mph NW | 20% | 0 | |
| 3 AM | Clear | 66° | 56° | 1% | 10 mph NW | 24% | 0 | |
| 4 AM | Clear | 64° | 54° | 1% | 10 mph NW | 28% | 0 | |
| 5 AM | Clear | 62° | 53° | 1% | 10 mph NW | 32% | 0 | |
| 6 AM | Sunny | 61° | 53° | 1% | 9 mph NW | 38% | 0 | |
| 7 AM | Sunny | 66° | 60° | 1% | 7 mph NNW | 40% | 0 | |
| 8 AM | Partly Cloudy | 70° | 65° | 2% | 7 mph N | 40% | 1 | |
| 9 AM | Sunny | 74° | 69° | 2% | 6 mph NE | 37% | 2 | |
| 10 AM | Sunny | 77° | 72° | 1% | 7 mph ENE | 32% | 4 | |
| 11 AM | Sunny | 80° | 74° | 1% | 7 mph E | 28% | 5 | |
| 12 PM | Sunny | 84° | 76° | 1% | 10 mph ESE | 23% | 6 | |
| 1 PM | Sunny | 87° | 78° | 1% | 11 mph ESE | 20% | 7 | |
| 2 PM | Sunny | 89° | 79° | 0% | 13 mph ESE | 18% | 7 | |
| 3 PM | Sunny | 90° | 79° | 0% | 15 mph SE | 17% | 5 | |
| 4 PM | Sunny | 91° | 79° | 0% | 16 mph SE | 16% | 4 | |
| 5 PM | Sunny | 91° | 79° | 0% | 17 mph SE | 16% | 2 | |
| 6 PM | Sunny | 90° | 78° | 0% | 17 mph SE | 16% | 1 | |
| 7 PM | Sunny | 88° | 78° | 0% | 15 mph SE | 17% | 0 | |
| 8 PM | Sunny | 79° | 70° | 0% | 10 mph ESE | 22% | 0 | |
| 9 PM | Clear | 74° | 66° | 0% | 8 mph SE | 26% | 0 | |
| 10 PM | Clear | 70° | 65° | 1% | 4 mph SSW | 30% | 0 | |
| 11 PM | Clear | 68° | 64° | 1% | 2 mph WSW | 33% | 0 |
Rapid City hourly weather - Saturday, August 8
In Rapid City, expect a high near 99°F (37°C) around 3 PM and a low of 64°F (18°C) near 6 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 67° | 63° | 1% | 2 mph SW | 34% | 0 | |
| 1 AM | Clear | 67° | 62° | 1% | 5 mph S | 35% | 0 | |
| 2 AM | Clear | 66° | 61° | 1% | 5 mph S | 37% | 0 | |
| 3 AM | Clear | 65° | 60° | 1% | 5 mph SSW | 39% | 0 | |
| 4 AM | Clear | 65° | 59° | 1% | 6 mph SSW | 40% | 0 | |
| 5 AM | Clear | 64° | 59° | 1% | 6 mph SW | 42% | 0 | |
| 6 AM | Sunny | 64° | 59° | 1% | 5 mph WSW | 43% | 0 | |
| 7 AM | Sunny | 69° | 65° | 1% | 4 mph W | 37% | 0 | |
| 8 AM | Sunny | 79° | 74° | 1% | 5 mph NNW | 26% | 1 | |
| 9 AM | Sunny | 84° | 76° | 1% | 11 mph N | 21% | 2 | |
| 10 AM | Sunny | 88° | 80° | 0% | 11 mph N | 18% | 4 | |
| 11 AM | Sunny | 92° | 84° | 0% | 11 mph NNE | 15% | 5 | |
| 12 PM | Sunny | 95° | 86° | 0% | 11 mph NNE | 13% | 7 | |
| 1 PM | Sunny | 97° | 87° | 1% | 12 mph NE | 12% | 7 | |
| 2 PM | Sunny | 98° | 89° | 1% | 11 mph NE | 12% | 6 | |
| 3 PM | Sunny | 99° | 90° | 1% | 11 mph ENE | 12% | 5 | |
| 4 PM | Sunny | 99° | 89° | 1% | 12 mph ENE | 12% | 3 | |
| 5 PM | Sunny | 98° | 89° | 1% | 12 mph ENE | 12% | 2 | |
| 6 PM | Sunny | 97° | 87° | 1% | 12 mph ENE | 13% | 1 | |
| 7 PM | Sunny | 94° | 85° | 0% | 11 mph E | 15% | 0 | |
| 8 PM | Sunny | 82° | 76° | 0% | 7 mph E | 21% | 0 | |
| 9 PM | Clear | 77° | 72° | 0% | 4 mph SE | 25% | 0 | |
| 10 PM | Clear | 75° | 71° | 0% | 3 mph WSW | 28% | 0 | |
| 11 PM | Clear | 74° | 69° | 0% | 5 mph W | 28% | 0 |
Quick answers for the hours ahead
What is the warmest hour in Rapid City today?
Will it rain in Rapid City tonight?
When is the UV index highest in Rapid City today?
Rapid City hour-by-hour: what to expect
Over the next 24 hours in Rapid City, temperatures range from 61°F (16°C) around 6 AM up to 96°F (35°C) near 4 PM - about 13°F (7°C) above the typical August high of 83°F (28°C).
Precipitation chances stay minimal throughout, so plans can skip the umbrella. UV reaches 8 (1 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the Rapid City 14-day forecast or the monthly climate averages.