, MT

(GMT )
West Yellowstone

Weather History for KWYS - September, 2013

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Week of September 8, 2013 through September 14, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 77 °F 67 °F 57 °F
Mean Temperature 56 °F 52 °F 49 °F
Min Temperature 46 °F 38 °F 28 °F
Degree Days  
Heating Degree Days (base 65) 16 12 9 85
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 2 0 17
Dew Point  
Dew Point 72 °F 47 °F 25 °F
Precipitation  
Precipitation 0.14 in 0.03 in 0.00 in 0.19 in
Snowdepth - - - -
Wind  
Wind 21 mph 3 mph 0 mph
Gust Wind 29 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.41 in 30.21 in 30.01 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Sep. 13, 2013 Rise Set
Actual Time 7:01 AM MDT 7:38 PM MDT
Civil Twilight 6:31 AM MDT 8:07 PM MDT
Nautical Twilight 5:57 AM MDT 8:42 PM MDT
Astronomical Twilight 5:20 AM MDT 9:18 PM MDT
Moon 3:41 PM MDT (9/13) 12:23 AM MDT (9/13)
Length of Visible Light 13h 35m
Length of Day
12h 37m
Waxing Gibbous, 62% of the Moon is Illuminated
Sep 13
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
8 71 56 41 66 47 37 88 84 81 30.24 30.17 30.08 10 9 0 21 3 29 0.14 Rain
9 62 50 39 59 46 34 88 84 81 30.22 30.15 30.11 10 8 0 12 3 - 0.00 Fog
10 73 50 28 68 48 25 88 84 80 30.29 30.23 30.18 10 10 7 9 2 - 0.00  
11 77 54 32 72 52 28 89 85 81 30.38 30.33 30.28 10 10 10 15 4 24 0.00  
12 57 49 41 54 44 37 88 84 81 30.41 30.35 30.25 10 10 3 12 2 - 0.02 Rain
13 71 55 39 66 47 34 88 84 81 30.25 30.13 30.01 10 8 0 12 2 18 0.00 Fog
14 59 52 46 55 48 41 88 84 81 30.20 30.13 30.07 10 10 4 15 3 21 0.03 Rain