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Rapid City 7-day weather forecast
Stacker created the forecast for Rapid City, South Dakota using data from OpenWeather. This week's high is 84 °F on Sunday, while the low is 52 °F on Saturday. There are expected to be 3 sunny days and rain on 6 days this week.
There are currently no weather alerts.
Monday, September 15
- High of 81 °F, low of 58 °F (16% humidity)- Sunny with a 25% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:32 AM, sunset at 7:03 PM
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Stepan Bessmelnitsin // Shutterstock
Tuesday, September 16
- High of 76 °F, low of 58 °F (44% humidity)
- Partly cloudy with a 80% chance of rain (1 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:33 AM, sunset at 7:01 PM
- Partly cloudy with a 80% chance of rain (1 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:33 AM, sunset at 7:01 PM

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Wednesday, September 17
- High of 69 °F, low of 58 °F (59% humidity)
- Overcast with a 100% chance of rain (16 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:34 AM, sunset at 7:00 PM
- Overcast with a 100% chance of rain (16 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:34 AM, sunset at 7:00 PM

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Thursday, September 18
- High of 62 °F, low of 55 °F (75% humidity)
- Overcast with a 100% chance of rain (3 mm of rain)
- High risk of harm from sun exposure (5 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 6:35 AM, sunset at 6:58 PM
- Overcast with a 100% chance of rain (3 mm of rain)
- High risk of harm from sun exposure (5 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 6:35 AM, sunset at 6:58 PM

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Cari Rubin Photography // Shutterstock
Friday, September 19
- High of 64 °F, low of 55 °F (74% humidity)
- Overcast with a 100% chance of rain (3 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:36 AM, sunset at 6:56 PM
- Overcast with a 100% chance of rain (3 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:36 AM, sunset at 6:56 PM

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Saturday, September 20
- High of 73 °F, low of 52 °F (57% humidity)
- Mostly sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:38 AM, sunset at 6:54 PM
- Mostly sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:38 AM, sunset at 6:54 PM
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South12th Photography // Shutterstock
Sunday, September 21
- High of 84 °F, low of 58 °F (24% humidity)
- Sunny with a 50% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:39 AM, sunset at 6:52 PM
- New moon
- Sunny with a 50% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:39 AM, sunset at 6:52 PM
- New moon