Bison, South Dakota
Current Conditions -  °F | °C
As of 12:53 AM on Wednesday 20 Aug 2014 (Local Time) from KHEI Reporting Station
Clear Clear  
Wind Chill: 67°   Ceiling: Unl
Heat Index: 67°   Visibility: 10mi
Dew Point: 58°   Wind: 7mph
Humidity: 73%   Direction: 130°SE
Pressure: 29.72"   Gusts: NA
Location:  45.52°N, 102.46°W
Report Text: KHEI 200653Z AUTO 13006KT 10SM CLR 19/14 A2972 RMK AO2 SLP042 T01940144 403170111
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Tropical Storm Tracking
Hourly Forecast -  °F | °C
Hi 85° - Lo 63°
1 AM
P Cloudy
P Cloudy
69°
2 AM
P Cloudy
P Cloudy
67°
3 AM
P Cloudy
P Cloudy
67°
4 AM
P Cloudy
P Cloudy
66°
5 AM
M Cloudy
M Cloudy
65°
6 AM
M Cloudy
M Cloudy
64°
Weather Maps
Daily Forecast -  °F | °C
tue wed thu fri sat sun mon tue wed thu
aug
19
P Cloudy
P Cloudy
85°
63°
aug
20
Sct T-Storms
Sct T-Storms
83°
59°
aug
21
M Sunny
M Sunny
84°
61°
aug
22
AM T-Storms
AM T-Storms
77°
58°
aug
23
Showers
Showers
73°
52°
aug
24
Sct T-Storms
Sct T-Storms
66°
48°
aug
25
M Sunny
M Sunny
69°
50°
aug
26
Sct T-Storms
Sct T-Storms
70°
51°
aug
27
P Cloudy
P Cloudy
75°
53°
aug
28
Sunny
Sunny
80°
57°
Details for Tuesday, August 19 (Evening)
Evening: Some clouds. Low 63F. Winds SE at 10 to 15 mph.
UV Index: 0 (Low)
Ultraviolet Radiation Index
Relative Humidity: 81%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 45%
Cloud Coverage
Sunrise: 5:55 AM
Sunset: 7:50 PM
 
Moonrise: 12:44 AM
Moonset: 3:54 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  SE
Direction: SE (137°)
Speed: 12Mph(19Km, 14Kts)
Details for Wednesday, August 20
Mixed clouds and sun with scattered thunderstorms. A few storms may be severe. High 83F. Winds SE at 10 to 15 mph. Chance of rain 50%.
Evening: Mostly clear skies. Low 59F. Winds NNW at 5 to 10 mph.
UV Index: 5 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 67%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 75%
Cloud Coverage
Sunrise: 5:56 AM
Sunset: 7:49 PM
 
Moonrise: 1:33 AM
Moonset: 4:40 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  SE
Direction: SE (140°)
Speed: 11Mph(18Km, 13Kts)
Details for Thursday, August 21
Mostly sunny. Highs in the mid 80s and lows in the low 60s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 60%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 24%
Cloud Coverage
Sunrise: 5:57 AM
Sunset: 7:47 PM
 
Moonrise: 2:25 AM
Moonset: 5:21 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  ENE
Direction: ENE (77°)
Speed: 8Mph(14Km, 10Kts)
Details for Friday, August 22
Morning showers and thunderstorms. Highs in the upper 70s and lows in the upper 50s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 74%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 62%
Cloud Coverage
Sunrise: 5:59 AM
Sunset: 7:45 PM
 
Moonrise: 3:20 AM
Moonset: 5:57 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  N
Direction: N (1°)
Speed: 11Mph(18Km, 13Kts)
Details for Saturday, August 23
Showers. Highs in the low 70s and lows in the low 50s.
UV Index: 5 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 82%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 63%
Cloud Coverage
Sunrise: 6:00 AM
Sunset: 7:44 PM
 
Moonrise: 4:16 AM
Moonset: 6:30 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  N
Direction: N (2°)
Speed: 11Mph(18Km, 13Kts)
Details for Sunday, August 24
A few thunderstorms possible. Highs in the mid 60s and lows in the upper 40s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 74%
Relative Humidity
Precipitation: 60%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 82%
Cloud Coverage
Sunrise: 6:01 AM
Sunset: 7:42 PM
 
Moonrise: 5:15 AM
Moonset: 6:59 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  NW
Direction: NW (309°)
Speed: 15Mph(24Km, 17Kts)
Details for Monday, August 25
Plenty of sun. Highs in the upper 60s and lows in the low 50s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 63%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 20%
Cloud Coverage
Sunrise: 6:02 AM
Sunset: 7:40 PM
 
Moonrise: 6:13 AM
Moonset: 7:27 PM
Moon Phase:  New
Moonphase:
New
Wind Direction:  WSW
Direction: WSW (242°)
Speed: 12Mph(19Km, 14Kts)
Details for Tuesday, August 26
A few thunderstorms possible. Highs in the low 70s and lows in the low 50s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 66%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 30%
Cloud Coverage
Sunrise: 6:03 AM
Sunset: 7:38 PM
 
Moonrise: 7:12 AM
Moonset: 7:54 PM
Moon Phase:  New
Moonphase:
New
Wind Direction:  SE
Direction: SE (126°)
Speed: 12Mph(19Km, 13Kts)
Details for Wednesday, August 27
Partly cloudy. Highs in the mid 70s and lows in the low 50s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 65%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 30%
Cloud Coverage
Sunrise: 6:05 AM
Sunset: 7:36 PM
 
Moonrise: 8:11 AM
Moonset: 8:20 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SSW
Direction: SSW (212°)
Speed: 8Mph(13Km, 9Kts)
Details for Thursday, August 28
Sunny. Highs in the low 80s and lows in the upper 50s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 58%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 3%
Cloud Coverage
Sunrise: 6:06 AM
Sunset: 7:35 PM
 
Moonrise: 9:11 AM
Moonset: 8:47 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SSE
Direction: SSE (167°)
Speed: 10Mph(17Km, 12Kts)
Daily Forecast Chart
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