Weather History for Butte, MT

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 83 °F 59 °F 39 °F
Mean Temperature 64 °F 46 °F 35 °F
Min Temperature 44 °F 32 °F 20 °F
Degree Days  
Heating Degree Days (base 65) 30 19 1 601
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 14 1 0 42
Dew Point  
Dew Point 50 °F 27 °F -13 °F
Precipitation  
Precipitation 0.23 in 0.05 in 0.00 in 1.20 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 6 mph 0 mph
Gust Wind 44 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.44 in 29.98 in 29.65 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 01, 2012 Rise Set
Actual Time 6:16 AM MDT 8:38 PM MDT
Civil Twilight 5:43 AM MDT 9:11 PM MDT
Nautical Twilight 5:01 AM MDT 9:53 PM MDT
Astronomical Twilight 4:15 AM MDT 10:40 PM MDT
Moon 3:31 PM MDT 3:32 AM MDT
Length of Visible Light 15h 28m
Length of Day
14h 22m
Waxing Gibbous, 74% of the Moon is Illuminated
May 1
Waxing Gibbous
May 5
Full
May 12
Last Quarter
May 20
New
May 28
First Quarter

Weather History Calendar

Precipitation Actual month total 1.20 Normal Month Total: 2.08
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
49 | 31 T
Average:
57 | 30 0.04
Snow
Actual:
45 | 25 0.07
Average:
57 | 30 0.05
Rain
Actual:
53 | 26 0.03
Average:
57 | 30 0.05
Rain
Actual:
56 | 33 0.09
Average:
58 | 30 0.05
Snow
Actual:
43 | 31 T
Average:
58 | 31 0.05
Scattered Clouds
Actual:
50 | 23 0.00
Average:
58 | 31 0.04
Clear
Actual:
63 | 21 0.00
Average:
59 | 31 0.06
Clear
Actual:
73 | 27 0.00
Average:
59 | 32 0.05
Scattered Clouds
Actual:
75 | 33 0.00
Average:
59 | 32 0.05
Rain
Actual:
49 | 33 0.07
Average:
60 | 32 0.06
Clear
Actual:
58 | 20 0.00
Average:
60 | 33 0.06
Clear
Actual:
66 | 24 0.00
Average:
60 | 33 0.06
Clear
Actual:
76 | 26 0.00
Average:
60 | 33 0.06
Clear
Actual:
78 | 32 0.00
Average:
61 | 34 0.06
Clear
Actual:
83 | 44 0.00
Average:
61 | 34 0.06
Clear
Actual:
79 | 39 0.00
Average:
61 | 34 0.07
Rain
Actual:
62 | 43 0.03
Average:
62 | 34 0.07
Rain
Actual:
59 | 31 T
Average:
62 | 35 0.07
Scattered Clouds
Actual:
60 | 24 0.00
Average:
62 | 35 0.07
Partly Cloudy
Actual:
69 | 28 0.00
Average:
62 | 35 0.07
Thunderstorm
Actual:
77 | 43 0.08
Average:
63 | 36 0.08
Rain
Actual:
54 | 39 0.11
Average:
63 | 36 0.08
Rain
Actual:
52 | 35 T
Average:
63 | 36 0.08
Rain
Actual:
53 | 33 0.09
Average:
63 | 36 0.08
Snow
Actual:
39 | 34 0.07
Average:
64 | 37 0.08
Snow
Actual:
40 | 32 0.22
Average:
64 | 37 0.08
Snow
Actual:
40 | 31 0.23
Average:
64 | 37 0.09
Rain
Actual:
55 | 36 0.08
Average:
64 | 38 0.09
Rain
Actual:
62 | 31 0.03
Average:
65 | 38 0.09
Partly Cloudy
Actual:
56 | 37 0.00
Average:
65 | 38 0.09
Partly Cloudy
Actual:
63 | 32 T
Average:
65 | 38 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

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 49 40 31 32 24 12 89 57 25 29.77 29.73 29.65 10 10 9 22 9 33 T  
2 45 35 25 32 25 15 92 65 37 29.98 29.84 29.76 10 7 0 23 6 32 0.07 Fog , Snow
3 53 40 26 39 28 21 84 64 44 29.96 29.85 29.73 10 10 6 22 3 29 0.03 Rain
4 56 45 33 36 31 25 92 62 32 30.03 29.91 29.82 10 10 6 28 6 39 0.09 Rain
5 43 37 31 32 22 15 89 61 33 30.34 30.17 30.01 10 9 2 25 11 33 T Snow
6 50 37 23 22 19 17 74 52 29 30.43 30.39 30.35 10 10 10 15 6 23 0.00  
7 63 42 21 26 19 11 84 50 16 30.44 30.33 30.21 10 10 2 15 4 21 0.00  
8 73 50 27 31 24 19 85 50 14 30.23 30.09 29.96 10 10 10 16 4 23 0.00  
9 75 54 33 34 28 23 75 45 15 29.97 29.84 29.72 10 10 10 23 8 32 0.00  
10 49 41 33 36 19 1 82 48 14 30.17 29.98 29.77 10 10 5 25 14 32 0.07 Rain
11 58 39 20 19 7 -13 77 42 6 30.32 30.24 30.17 10 10 10 10 4 14 0.00  
12 66 45 24 24 15 -1 75 42 8 30.32 30.26 30.21 10 10 10 12 4 15 0.00  
13 76 51 26 27 19 10 75 42 8 30.34 30.23 30.12 10 10 10 13 4 18 0.00  
14 78 55 32 26 18 -1 72 39 5 30.22 30.13 30.03 10 10 10 18 4 25 0.00  
15 83 64 44 32 26 17 48 29 9 30.08 29.95 29.84 10 10 1 20 4 23 0.00  
16 79 59 39 35 31 22 76 46 15 29.90 29.82 29.72 10 10 10 20 6 28 0.00  
17 62 53 43 45 35 30 76 54 32 29.80 29.76 29.69 10 10 2 22 5 29 0.03 Rain
18 59 45 31 39 25 11 76 46 16 30.03 29.85 29.75 10 10 10 22 9 30 T Rain
19 60 42 24 25 21 18 74 49 23 30.09 30.05 30.00 10 10 10 24 5 33 0.00  
20 69 49 28 33 28 23 78 50 22 30.16 30.08 30.02 10 10 10 15 5 23 0.00  
21 77 60 43 50 39 33 70 46 21 30.06 29.92 29.70 10 9 2 30 5 44 0.08 Rain , Thunderstorm
22 54 47 39 48 37 24 86 59 32 29.83 29.74 29.67 10 10 5 28 9 35 0.11 Rain
23 52 44 35 32 27 20 82 57 31 29.80 29.76 29.73 10 10 10 25 10 32 T Rain
24 53 43 33 34 28 21 92 61 30 29.85 29.78 29.69 10 10 8 23 7 28 0.09 Rain
25 39 37 34 34 30 26 92 78 64 29.93 29.85 29.79 10 6 0 20 6 30 0.07 Rain , Snow
26 40 36 32 34 31 27 100 82 64 29.91 29.83 29.78 10 7 0 12 5 18 0.22 Fog , Rain , Snow
27 40 36 31 36 32 30 100 93 85 30.01 29.86 29.78 10 6 1 17 6 21 0.23 Rain , Snow
28 55 46 36 38 35 32 92 69 45 30.09 30.04 29.97 10 10 7 14 5 18 0.08 Rain
29 62 47 31 39 35 29 96 70 44 30.08 30.00 29.94 10 10 10 28 6 33 0.03 Rain
30 56 47 37 35 31 26 79 57 35 30.20 30.08 29.97 10 10 10 14 5 17 0.00  
31 63 48 32 45 37 30 92 67 42 30.21 30.10 29.98 10 10 10 20 6 25 T