• Today

    Sep 18

    22°Lo 12°

    A t-storm in spots; warmer

    Poor for skiing
    • Rain
      2 mm
    • Precip
      40%
    • Hours of Precip
      1
  • Fri

    Sep 19

    21°Lo 8°

    Partly sunny

    Poor for skiing
    • Rain
      0 mm
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Sat

    Sep 20

    17°Lo 5°

    Some sun, a shower; breezy

    Poor for skiing
    • Rain
      1 mm
    • Precip
      43%
    • Hours of Precip
      1
    more
  • Sun

    Sep 21

    18°Lo 9°

    Nice with clouds and sun

    Poor for skiing
    • Rain
      0 mm
    • Precip
      0%
    • Hours of Precip
      0
    more
  • Mon

    Sep 22

    21°Lo 9°

    Mostly sunny

    Poor for skiing
    • Rain
      0 mm
    • Precip
      0%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
3pm
4pm 5pm 6pm 7pm 8pm 9pm 10pm
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Forecast
Partly Sunny
Partly Sunny
Partly Sunny
T-storms
Partly Sunny
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°C) 21° 22° 21° 20° 19° 17° 17° 16°
RealFeel® 19° 20° 18° 16° 16° 15° 14° 14°
Humidity 46% 48% 53% 60% 67% 74% 77% 78%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
30%
 
34%
 
47%
 
51%
 
47%
 
30%
 
30%
 
36%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (km/h) 26 S 24 S 22 S 19 S 18 S 14 SSW 13 SSW 10 SW
UV Index 3 2 1 0 0 0 0 0
Cloud Cover 46% 46% 46% 46% 48% 26% 26% 26%
Dew Point 10° 11° 12° 12° 13° 12° 12°
Middle Grid line 25 C Middle Grid line 20 C Middle Grid line 15 C

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 22° 17° N/A 19°
Low 12° N/A 12°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:20 AM with 12:27 of sunlight, then sets at 7:47 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:51 AM with 15:09 of moolight, then sets at 5:00 PM

Top Story

Rapid City Weather Report

Long Winter Nights, Dry Air Increase Chance to View Aurora

September 18, 2014; 8:05 AM ET

Igniting across Northern skies, ghostly rivers of light dance overhead each year, emitting vibrant shades of green, blue, pink, red and violet. more >