Weather History for Butte, MT

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 84 °F 74 °F 60 °F
Mean Temperature 60 °F 55 °F 44 °F
Min Temperature 45 °F 35 °F 24 °F
Degree Days  
Heating Degree Days (base 65) 21 10 5 313
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 14 5 0 138
Dew Point  
Dew Point 49 °F 27 °F 4 °F
Precipitation  
Precipitation 0.02 in 0.00 in 0.00 in 0.03 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 5 mph 0 mph
Gust Wind 40 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.51 in 30.11 in 29.78 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 12, 2012 Rise Set
Actual Time 7:05 AM MDT 7:46 PM MDT
Civil Twilight 6:35 AM MDT 8:16 PM MDT
Nautical Twilight 5:59 AM MDT 8:51 PM MDT
Astronomical Twilight 5:21 AM MDT 9:28 PM MDT
Moon 3:16 AM MDT (9/12) 5:43 PM MDT (9/12)
Length of Visible Light 13h 41m
Length of Day
12h 40m
Waning Crescent, 13% of the Moon is Illuminated
Sep 12
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Weather History Calendar

Precipitation Actual month total 0.03 Normal Month Total: 1.00
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
75 | 45 0.01
Average:
75 | 40 0.04
Scattered Clouds
Actual:
75 | 32 0.00
Average:
74 | 40 0.04
Partly Cloudy
Actual:
75 | 33 0.00
Average:
74 | 40 0.04
Partly Cloudy
Actual:
71 | 33 0.00
Average:
73 | 39 0.04
Scattered Clouds
Actual:
75 | 32 0.00
Average:
73 | 39 0.04
Rain
Actual:
69 | 41 T
Average:
73 | 39 0.04
Clear
Actual:
75 | 32 0.00
Average:
72 | 38 0.03
Clear
Actual:
80 | 33 0.00
Average:
72 | 38 0.04
Scattered Clouds
Actual:
84 | 35 T
Average:
71 | 38 0.03
Partly Cloudy
Actual:
73 | 39 0.00
Average:
71 | 38 0.04
Clear
Actual:
60 | 32 0.00
Average:
70 | 37 0.03
Clear
Actual:
63 | 24 0.00
Average:
70 | 37 0.03
Clear
Actual:
78 | 26 0.00
Average:
70 | 37 0.04
Scattered Clouds
Actual:
80 | 30 0.00
Average:
69 | 36 0.03
Partly Cloudy
Actual:
77 | 34 0.00
Average:
69 | 36 0.03
Rain
Actual:
62 | 38 0.02
Average:
68 | 36 0.03
Clear
Actual:
72 | 31 0.00
Average:
68 | 35 0.03
Clear
Actual:
79 | 31 0.00
Average:
67 | 35 0.03
Scattered Clouds
Actual:
78 | 34 0.00
Average:
67 | 34 0.04
Scattered Clouds
Actual:
77 | 33 0.00
Average:
66 | 34 0.03
Clear
Actual:
79 | 35 0.00
Average:
66 | 34 0.03
Clear
Actual:
79 | 38 0.00
Average:
65 | 33 0.03
Scattered Clouds
Actual:
75 | 40 0.00
Average:
65 | 33 0.03
Scattered Clouds
Actual:
74 | 42 0.00
Average:
64 | 33 0.03
Clear
Actual:
72 | 36 0.00
Average:
64 | 32 0.03
Clear
Actual:
72 | 34 0.00
Average:
64 | 32 0.03
Clear
Actual:
75 | 34 0.00
Average:
63 | 32 0.03
Scattered Clouds
Actual:
75 | 34 T
Average:
63 | 32 0.03
Thunderstorm
Actual:
70 | 44 T
Average:
62 | 31 0.03
Clear
Actual:
70 | 37 0.00
Average:
62 | 31 0.03
 

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

2012 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 75 60 45 49 39 22 83 53 23 30.00 29.89 29.81 10 10 9 10 7 12 0.01 Rain , Thunderstorm
2 75 54 32 30 20 9 72 41 9 30.19 30.05 29.97 10 7 3 18 6 24 0.00  
3 75 54 33 23 19 14 56 34 11 30.15 30.06 29.99 10 6 2 17 5 26 0.00  
4 71 52 33 30 25 21 64 41 18 30.20 30.11 30.02 10 6 2 22 6 28 0.00  
5 75 54 32 31 25 20 72 42 12 30.19 30.04 29.92 10 7 2 17 5 23 0.00  
6 69 55 41 39 33 26 71 49 26 30.20 30.07 29.96 10 8 2 21 5 28 T Rain
7 75 54 32 39 29 18 89 51 12 30.32 30.27 30.21 10 10 8 10 4 14 0.00  
8 80 57 33 32 25 19 69 40 11 30.34 30.22 30.09 10 10 8 13 4 17 0.00  
9 84 60 35 34 27 21 54 33 11 30.16 29.93 29.78 10 8 5 29 5 40 T  
10 73 56 39 37 28 19 65 40 14 29.98 29.85 29.78 7 4 2 24 7 39 0.00  
11 60 46 32 31 20 8 76 44 12 30.24 30.07 29.91 10 9 6 18 7 23 0.00  
12 63 44 24 21 16 12 57 36 15 30.43 30.36 30.25 10 9 6 14 5 20 0.00  
13 78 52 26 24 18 12 63 36 9 30.51 30.41 30.30 10 8 4 8 3 14 0.00  
14 80 55 30 20 15 4 58 32 5 30.34 30.23 30.11 10 8 5 18 4 25 0.00  
15 77 56 34 28 18 12 51 31 11 30.24 30.16 30.06 7 3 2 13 5 17 0.00  
16 62 50 38 44 35 26 85 62 39 30.21 30.16 30.10 10 8 6 14 3 16 0.02 Rain
17 72 52 31 36 29 23 92 54 16 30.27 30.19 30.11 10 9 7 16 5 21 0.00  
18 79 55 31 30 27 24 72 44 15 30.20 30.12 30.01 10 7 3 17 5 22 0.00  
19 78 56 34 30 27 23 70 43 15 30.30 30.18 30.07 10 4 1 17 5 22 0.00  
20 77 55 33 26 24 21 56 36 15 30.30 30.19 30.10 9 5 1 14 5 20 0.00  
21 79 57 35 30 26 23 64 39 13 30.25 30.15 30.07 10 9 6 14 4 18 0.00  
22 79 59 38 34 27 22 62 37 12 30.20 30.07 29.99 10 8 6 10 2 15 0.00  
23 75 58 40 33 29 25 60 38 15 30.10 30.04 29.99 10 9 7 17 4 25 0.00  
24 74 58 42 36 33 31 62 43 23 30.06 29.98 29.90 10 8 3 12 4 16 0.00  
25 72 54 36 39 36 32 82 56 29 30.12 30.01 29.91 8 4 1 12 3 - 0.00  
26 72 53 34 39 35 31 82 54 25 30.17 30.06 29.99 10 8 4 9 3 12 0.00  
27 75 55 34 40 34 31 82 53 23 30.17 30.10 30.02 9 8 6 12 3 13 0.00  
28 75 55 34 39 32 27 82 50 17 30.12 30.03 29.93 10 8 2 14 2 18 T  
29 70 57 44 45 39 34 83 55 27 30.17 30.08 29.99 10 10 10 17 4 23 T Rain , Thunderstorm
30 70 54 37 39 33 25 92 57 22 30.32 30.23 30.14 10 10 10 18 6 24 0.00