Weather History for West Yellowstone, MT

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Month of September, 2014

  Max Avg Min Sum
Temperature  
Max Temperature 77 °F 64 °F 42 °F
Mean Temperature 55 °F 48 °F 32 °F
Min Temperature 48 °F 32 °F 10 °F
Degree Days  
Heating Degree Days (base 65) 32 17 10 485
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 5 1 0 31
Dew Point  
Dew Point 54 °F 35 °F -2 °F
Precipitation  
Precipitation 0.67 in 0.05 in 0.00 in 1.43 in
Snowdepth - - - -
Wind  
Wind 28 mph 4 mph 0 mph
Gust Wind 34 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.42 in 30.15 in 29.85 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 12, 2014 Rise Set
Actual Time 6:59 AM MDT 7:40 PM MDT
Civil Twilight 6:30 AM MDT 8:10 PM MDT
Nautical Twilight 5:55 AM MDT 8:44 PM MDT
Astronomical Twilight 5:18 AM MDT 9:21 PM MDT
Moon 9:52 PM MDT (9/12) 11:18 AM MDT (9/12)
Length of Visible Light 13h 39m
Length of Day
12h 40m
Waning Gibbous, 82% of the Moon is Illuminated
Sep 12
Waning Gibbous
Sep 15
Last Quarter
Sep 24
New
Oct 1
First Quarter
Oct 8
Full

Weather History Calendar

Precipitation Actual month total 1.43 Average Month Total: 1.48
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
60 | 35 0.02
Average:
71 | 34 0.04
Clear
Actual:
66 | 32 0.00
Average:
71 | 35 0.02
Scattered Clouds
Actual:
62 | 30 0.00
Average:
71 | 33 0.02
Clear
Actual:
59 | 26 0.00
Average:
72 | 33 0.02
Clear
Actual:
66 | 24 0.00
Average:
71 | 35 0.06
Clear
Actual:
71 | 26 0.00
Average:
71 | 35 0.08
Scattered Clouds
Actual:
75 | 28 0.00
Average:
71 | 35 0.04
Scattered Clouds
Actual:
73 | 28 0.00
Average:
68 | 34 0.09
Rain
Actual:
66 | 37 0.03
Average:
70 | 33 0.04
Rain
Actual:
55 | 32 0.00
Average:
68 | 33 0.06
Partly Cloudy
Actual:
42 | 23 0.00
Average:
65 | 32 0.05
Clear
Actual:
57 | 10 0.00
Average:
62 | 31 0.07
Clear
Actual:
66 | 17 0.00
Average:
63 | 29 0.08
Clear
Actual:
71 | 23 0.00
Average:
64 | 28 0.08
Clear
Actual:
73 | 26 0.00
Average:
63 | 28 0.05
Scattered Clouds
Actual:
73 | 28 0.00
Average:
64 | 30 0.01
Clear
Actual:
75 | 30 0.00
Average:
63 | 30 0.05
Rain
Actual:
68 | 37 0.25
Average:
64 | 28 0.05
Fog
Actual:
66 | 39 0.00
Average:
61 | 29 0.07
Clear
Actual:
71 | 30 0.00
Average:
58 | 28 0.05
Scattered Clouds
Actual:
73 | 28 0.00
Average:
60 | 26 0.06
Rain
Actual:
57 | 48 0.05
Average:
61 | 26 0.01
Partly Cloudy
Actual:
66 | 44 0.00
Average:
62 | 27 0.06
Fog
Actual:
73 | 37 0.00
Average:
63 | 29 0.03
Clear
Actual:
77 | 32 0.00
Average:
62 | 28 0.04
Rain
Actual:
71 | 39 0.11
Average:
60 | 28 0.04
Rain
Actual:
53 | 48 0.67
Average:
61 | 28 0.07
Rain
Actual:
48 | 48 0.09
Average:
60 | 26 0.01
Rain
Actual:
48 | 41 0.06
Average:
62 | 26 0.04
Rain
Actual:
46 | 37 0.15
Average:
62 | 26 0.09
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2014 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  
1 60 48 35 43 38 34 100 73 39 30.15 30.12 30.07 10 10 0 18 5 26 0.02 Fog , Rain
2 66 49 32 37 35 28 100 58 32 30.14 30.06 29.93 10 10 9 25 7 33 0.00  
3 62 46 30 39 32 21 100 59 20 30.08 29.92 29.85 10 10 10 28 7 34 0.00  
4 59 42 26 34 26 16 100 60 19 30.25 30.18 30.09 10 10 10 8 3 - 0.00  
5 66 45 24 36 25 7 100 61 10 30.37 30.30 30.26 10 10 10 8 1 - 0.00  
6 71 48 26 39 30 23 100 64 18 30.40 30.31 30.23 10 10 10 14 2 21 0.00  
7 75 52 28 39 33 27 100 60 18 30.24 30.15 30.06 10 10 10 20 3 25 0.00  
8 73 50 28 41 34 28 100 57 20 30.11 30.05 29.96 10 10 10 21 4 28 0.00  
9 66 52 37 46 42 36 100 76 39 30.09 30.02 29.96 10 10 4 18 5 32 0.03 Rain
10 55 44 32 39 34 27 100 70 33 30.22 30.11 30.08 10 10 0 17 4 28 0.00 Fog , Rain
11 42 32 23 28 21 14 86 61 33 30.42 30.31 30.22 10 10 10 20 9 26 0.00  
12 57 34 10 23 13 -2 100 53 11 30.42 30.31 30.18 10 10 8 15 2 22 0.00  
13 66 42 17 27 21 16 93 52 17 30.23 30.16 30.09 10 10 10 16 2 24 0.00  
14 71 47 23 32 24 16 93 56 12 30.23 30.15 30.11 10 10 10 10 2 22 0.00  
15 73 50 26 34 26 18 93 54 13 30.30 30.25 30.21 10 10 10 13 2 21 0.00  
16 73 50 28 43 33 25 93 58 23 30.28 30.23 30.15 10 10 8 12 1 25 0.00  
17 75 52 30 45 37 28 100 67 23 30.18 30.14 30.08 10 10 10 16 2 24 0.00  
18 68 52 37 54 45 36 100 81 52 30.11 30.04 29.96 10 10 4 13 2 18 0.25 Rain
19 66 52 39 52 44 39 100 78 46 30.24 30.14 30.05 10 6 0 22 5 29 0.00 Fog
20 71 50 30 45 35 23 100 68 17 30.38 30.32 30.25 10 10 9 6 1 - 0.00  
21 73 50 28 48 38 28 100 65 27 30.37 30.30 30.22 10 10 10 12 2 21 0.00  
22 57 52 48 50 48 45 100 86 63 30.25 30.21 30.18 10 10 5 14 7 21 0.05 Rain
23 66 55 44 48 47 43 100 80 49 30.29 30.25 30.20 10 10 10 16 3 22 0.00  
24 73 55 37 46 42 37 100 71 29 30.31 30.26 30.21 10 10 0 20 3 24 0.00 Fog
25 77 54 32 45 37 32 100 65 19 30.23 30.16 30.06 10 10 10 24 3 33 0.00  
26 71 55 39 48 41 36 93 63 33 30.17 30.10 30.04 10 10 3 17 4 24 0.11 Rain
27 53 50 48 52 49 48 100 97 82 30.13 30.10 30.07 10 6 2 9 4 - 0.67 Rain
28 48 - 48 48 48 48 100 100 100 30.10 30.10 30.10 2 2 2 0 0 - 0.09 Rain
29 48 44 41 43 40 37 100 85 76 30.00 29.97 29.95 10 9 3 20 11 28 0.06 Rain
30 46 42 37 41 39 36 100 92 81 29.98 29.91 29.86 10 9 2 23 8 31 0.15 Rain