Weather Report
Yellowstone National Park, Wyoming
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Current Conditions -  °F | °C
As of 11:55 PM on Tuesday 21 May 2013 (Local Time) from KWYS Reporting Station
Broken Clouds Broken Clouds   Feels Like: 3°
Wind Chill:   Ceiling: 9000
Heat Index:   Visibility: 10mi
Dew Point:   Wind: 0mph
Humidity: 87%   Direction: NA NA
Pressure: 29.89"   Gusts: NA
Report Text: KWYS 220555Z AUTO 00000KT 10SM BKN090 04/02 A2989 RMK AO2
12 AM
P Cloudy
P Cloudy
1 AM
P Cloudy
P Cloudy
2 AM
P Cloudy
P Cloudy
Alerts
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10 Day Forecast -  °F | °C
tue wed thu fri sat sun mon tue wed thu
may
21
P Cloudy
P Cloudy
13°
-2°
may
22
Iso T-Storms
Iso T-Storms
14°
may
23
Sct T-Storms
Sct T-Storms
13°
-3°
may
24
AM Snw Shwrs
AM Snw Shwrs
-3°
may
25
P Cloudy
P Cloudy
16°
-1°
may
26
P Cloudy
P Cloudy
14°
may
27
Iso T-Storms
Iso T-Storms
14°
-1°
may
28
Iso T-Storms
Iso T-Storms
13°
-1°
may
29
Cloudy
Cloudy
12°
-1°
may
30
Showers
Showers
11°
-3°
Details for Tuesday, May 21 (Evening)
Evening: Some clouds. A stray shower or thunderstorm is possible. Low 28F. Winds light and variable.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 80%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 10%
Snow
Cloud Coverage: 44%
Cloud Coverage
Sunrise: 5:48 AM
Sunset: 8:49 PM
 
Moonrise: 4:59 PM
Moonset: 3:27 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  SE
Direction: SE (133°)
Speed: 4Mph(6Km, 3Kts)
Details for Wednesday, May 22
Sun and clouds mixed with a slight chance of thunderstorms during the afternoon. High 57F. Winds SSE at 10 to 15 mph. Chance of rain 30%.
Evening: Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 34F. Winds light and variable. Chance of rain 40%.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 48%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 19%
Snow
Cloud Coverage: 52%
Cloud Coverage
Sunrise: 5:47 AM
Sunset: 8:50 PM
 
Moonrise: 6:11 PM
Moonset: 3:59 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  SSE
Direction: SSE (155°)
Speed: 12Mph(20Km, 10Kts)
Details for Thursday, May 23
A few thunderstorms possible. Highs in the mid 50s and lows in the upper 20s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 50%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 3%
Snow
Cloud Coverage: 50%
Cloud Coverage
Sunrise: 5:46 AM
Sunset: 8:51 PM
 
Moonrise: 7:25 PM
Moonset: 4:37 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  SSE
Direction: SSE (158°)
Speed: 11Mph(18Km, 9Kts)
Details for Friday, May 24
Morning snow showers. Highs in the mid 40s and lows in the upper 20s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 53%
Relative Humidity
Precipitation: 30%
Probability of Precipitation
Snow: 12%
Snow
Cloud Coverage: 28%
Cloud Coverage
Sunrise: 5:45 AM
Sunset: 8:52 PM
 
Moonrise: 8:37 PM
Moonset: 5:22 AM
Moon Phase:  Full
Moonphase:
Full
Wind Direction:  SW
Direction: SW (221°)
Speed: 16Mph(26Km, 14Kts)
Details for Saturday, May 25
Partly cloudy. Highs in the low 60s and lows in the low 30s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 40%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 4%
Snow
Cloud Coverage: 33%
Cloud Coverage
Sunrise: 5:44 AM
Sunset: 8:53 PM
 
Moonrise: 9:44 PM
Moonset: 6:15 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  SSE
Direction: SSE (155°)
Speed: 4Mph(7Km, 3Kts)
Details for Sunday, May 26
Partly cloudy. Highs in the upper 50s and lows in the low 30s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 44%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 6%
Snow
Cloud Coverage: 50%
Cloud Coverage
Sunrise: 5:44 AM
Sunset: 8:54 PM
 
Moonrise: 10:44 PM
Moonset: 7:17 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  S
Direction: S (170°)
Speed: 3Mph(5Km, 3Kts)
Details for Monday, May 27
Slight chance of a thunderstorm. Highs in the upper 50s and lows in the low 30s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 55%
Relative Humidity
Precipitation: 30%
Probability of Precipitation
Snow: 11%
Snow
Cloud Coverage: 43%
Cloud Coverage
Sunrise: 5:43 AM
Sunset: 8:55 PM
 
Moonrise: 11:34 PM
Moonset: 8:26 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  SSW
Direction: SSW (195°)
Speed: 6Mph(10Km, 5Kts)
Details for Tuesday, May 28
Partly cloudy with a stray thunderstorm. Highs in the mid 50s and lows in the low 30s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 57%
Relative Humidity
Precipitation: 30%
Probability of Precipitation
Snow: 9%
Snow
Cloud Coverage: 49%
Cloud Coverage
Sunrise: 5:42 AM
Sunset: 8:56 PM
 
Moonrise: 11:59 PM
Moonset: 9:39 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  S
Direction: S (190°)
Speed: 5Mph(8Km, 4Kts)
Details for Wednesday, May 29
Cloudy. Highs in the low 50s and lows in the low 30s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 64%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 5%
Snow
Cloud Coverage: 63%
Cloud Coverage
Sunrise: 5:41 AM
Sunset: 8:57 PM
 
Moonrise: 12:16 AM
Moonset: 10:52 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  S
Direction: S (191°)
Speed: 7Mph(12Km, 6Kts)
Details for Thursday, May 30
Chance of showers. Highs in the low 50s and lows in the upper 20s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 64%
Relative Humidity
Precipitation: 30%
Probability of Precipitation
Snow: 7%
Snow
Cloud Coverage: 54%
Cloud Coverage
Sunrise: 5:41 AM
Sunset: 8:58 PM
 
Moonrise: 12:52 AM
Moonset: 12:03 PM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  WSW
Direction: WSW (244°)
Speed: 10Mph(16Km, 9Kts)
Chart.
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