• Tonight

    Sep 18

    Lo 12°

    A shower or t-storm in spots

    Travel Weather
    • Rain
      3 mm
    • Wind
      Speed
      19 k/h
    • T-storms
      40%
    more
  • Fri

    Sep 19

    20°Lo 10°

    Partly sunny

    Excellent for travel
    • Rain
      3 mm
    • Wind
      Speed
      8 k/h
    • T-storms
      22%
  • Sat

    Sep 20

    18°Lo 6°

    Some sun, a shower; breezy

    Very Good for travel
    • Rain
      1 mm
    • Wind
      Speed
      19 k/h
    • T-storms
      29%
    more
  • Sun

    Sep 21

    20°Lo 8°

    Nice with clouds and sun

    Excellent for travel
    • Rain
      0 mm
    • Wind
      Speed
      10 k/h
    • T-storms
      0%
    more
  • Mon

    Sep 22

    20°Lo 9°

    Mostly sunny

    Excellent for travel
    • Rain
      0 mm
    • Wind
      Speed
      8 k/h
    • T-storms
      0%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Mostly Clear
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Sunny
Partly Cloudy
Sunny
Temp (°C) 13° 14° 15° 17° 19° 20° 21° 20°
RealFeel® 12° 13° 16° 18° 20° 21° 22° 21°
Humidity 72% 73% 69% 63% 60% 58% 56% 57%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
47%
 
20%
 
20%
 
20%
 
20%
 
20%
 
16%
 
7%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (km/h) 6 WNW 6 WNW 6 NW 6 NW 6 NW 8 WNW 6 WNW 6 NW
UV Index 0 0 1 2 3 4 3 4
Cloud Cover 26% 28% 22% 17% 11% 6% 70% 6%
Dew Point 10° 10° 11° 11° 12° 11°
Middle Grid line 25 C Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 21° 17° N/A 15°
Low 10° N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:22 AM with 12:23 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:49 AM with 14:43 of moolight, then sets at 5:32 PM

Top Story

Rapid City Weather Report

Cold Snap, Widespread Frost Looms for Northeast

September 18, 2014; 5:00 PM ET

The chilliest air of the season so far will settle over much of the Northeast into Friday and will bring frost to a large area. more >