Weather History for Helena, MT

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Month of August, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 97 °F 87 °F 74 °F
Mean Temperature 77 °F 72 °F 64 °F
Min Temperature 62 °F 55 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 1 0 0 1
Cooling Degree Days (base 65) 12 7 0 208
Growing Degree Days (base 50) 26 21 13 660
Dew Point  
Dew Point 59 °F 44 °F 25 °F
Precipitation  
Precipitation 0.88 in 0.06 in 0.00 in 1.71 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 44 mph 5 mph 0 mph
Gust Wind 55 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.18 in 29.99 in 29.74 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Aug. 01, 2013 Rise Set
Actual Time 6:08 AM MDT 8:58 PM MDT
Civil Twilight 5:33 AM MDT 9:33 PM MDT
Nautical Twilight 4:49 AM MDT 10:18 PM MDT
Astronomical Twilight 3:56 AM MDT 11:10 PM MDT
Moon 1:46 AM MDT (8/1) 5:13 PM MDT (8/1)
Length of Visible Light 15h 59m
Length of Day
14h 49m
Waning Crescent, 23% of the Moon is Illuminated
Aug 1
Waning Crescent
Aug 6
New
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.71 Normal Month Total: 1.20
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
74 | 53 0.88
Average:
88 | 55 0.04
Thunderstorm
Actual:
83 | 56 0.10
Average:
88 | 55 0.03
Rain
Actual:
79 | 54 0.03
Average:
88 | 55 0.04
Scattered Clouds
Actual:
85 | 56 0.00
Average:
88 | 55 0.03
Clear
Actual:
88 | 53 0.00
Average:
88 | 55 0.04
Scattered Clouds
Actual:
87 | 54 0.00
Average:
87 | 54 0.03
Clear
Actual:
90 | 54 0.00
Average:
87 | 54 0.04
Clear
Actual:
86 | 58 0.00
Average:
87 | 54 0.04
Thunderstorm
Actual:
83 | 59 0.02
Average:
87 | 54 0.04
Clear
Actual:
85 | 54 0.00
Average:
87 | 54 0.04
Clear
Actual:
84 | 57 0.00
Average:
86 | 54 0.04
Thunderstorm
Actual:
86 | 51 0.00
Average:
86 | 53 0.04
Thunderstorm
Actual:
88 | 54 0.42
Average:
86 | 53 0.04
Clear
Actual:
89 | 53 0.00
Average:
86 | 53 0.03
Clear
Actual:
94 | 55 0.00
Average:
85 | 53 0.04
Clear
Actual:
97 | 56 0.00
Average:
85 | 53 0.04
Clear
Actual:
92 | 60 0.00
Average:
85 | 52 0.04
Scattered Clouds
Actual:
92 | 62 0.00
Average:
84 | 52 0.04
Clear
Actual:
94 | 57 0.00
Average:
84 | 52 0.04
Clear
Actual:
91 | 56 0.00
Average:
84 | 52 0.04
Clear
Actual:
89 | 55 0.00
Average:
83 | 51 0.04
Thunderstorm
Actual:
85 | 55 0.14
Average:
83 | 51 0.04
Thunderstorm
Actual:
84 | 59 0.01
Average:
83 | 51 0.04
Thunderstorm
Actual:
86 | 55 0.00
Average:
82 | 50 0.04
Thunderstorm
Actual:
92 | 54 0.00
Average:
82 | 50 0.04
Rain
Actual:
85 | 57 0.05
Average:
82 | 50 0.04
Scattered Clouds
Actual:
89 | 55 0.00
Average:
81 | 50 0.04
Thunderstorm
Actual:
85 | 56 0.04
Average:
81 | 49 0.04
Scattered Clouds
Actual:
91 | 54 0.02
Average:
80 | 49 0.04
Clear
Actual:
90 | 54 0.00
Average:
80 | 49 0.04
Clear
Actual:
85 | 53 0.00
Average:
79 | 48 0.04
 

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

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 74 64 53 56 51 38 84 58 31 30.07 30.00 29.92 10 8 0 44 10 55 0.88 Fog , Rain , Thunderstorm
2 83 70 56 55 49 43 86 56 26 30.06 29.99 29.92 10 9 2 23 6 31 0.10 Rain , Thunderstorm
3 79 67 54 51 47 44 72 48 23 30.12 30.07 30.00 10 10 7 18 5 21 0.03 Rain
4 85 71 56 49 43 35 72 43 14 30.09 30.02 29.94 10 10 10 20 5 24 0.00  
5 88 71 53 49 42 35 71 44 16 30.03 29.96 29.85 10 10 10 28 8 35 0.00  
6 87 71 54 49 44 34 72 44 15 30.04 29.99 29.95 10 10 10 15 4 18 0.00  
7 90 72 54 48 41 30 71 42 13 30.01 29.96 29.88 10 10 10 15 4 18 0.00  
8 86 72 58 51 48 45 62 44 25 30.07 30.01 29.95 10 10 10 20 7 24 0.00  
9 83 71 59 59 52 46 72 53 34 30.13 30.07 29.99 10 10 9 22 6 30 0.02 Rain , Thunderstorm
10 85 70 54 53 48 38 80 52 23 30.10 30.03 29.97 10 10 10 24 3 37 0.00  
11 84 71 57 50 45 37 67 45 23 30.07 30.04 29.98 10 10 10 21 4 25 0.00  
12 86 69 51 48 42 30 71 45 18 30.09 30.05 30.00 10 10 10 17 5 24 0.00 Thunderstorm
13 88 71 54 54 45 39 78 48 18 30.18 30.09 29.99 10 9 2 29 4 37 0.42 Rain , Thunderstorm
14 89 71 53 54 47 35 89 53 17 30.14 30.05 29.95 10 10 10 12 3 20 0.00  
15 94 75 55 50 39 33 62 37 12 30.06 29.97 29.88 10 10 10 13 3 17 0.00  
16 97 77 56 45 38 25 55 32 8 29.98 29.92 29.83 10 10 10 22 5 29 0.00  
17 92 76 60 46 42 37 48 34 19 30.04 29.95 29.87 10 10 10 15 4 21 0.00  
18 92 77 62 47 42 37 48 32 15 30.04 29.95 29.88 10 10 10 23 9 28 0.00  
19 94 76 57 42 36 27 57 33 9 30.02 29.93 29.83 10 10 9 22 7 30 0.00  
20 91 74 56 41 38 34 47 31 14 30.00 29.92 29.84 10 10 7 21 8 26 0.00  
21 89 72 55 39 34 31 51 32 13 30.10 30.03 29.98 10 10 10 12 5 15 0.00  
22 85 70 55 54 43 34 47 37 26 30.09 29.99 29.89 10 9 2 26 4 33 0.14 Rain , Thunderstorm
23 84 72 59 57 49 38 65 43 20 29.99 29.85 29.74 10 10 9 30 8 40 0.01 Rain , Thunderstorm
24 86 71 55 50 46 41 72 47 22 29.96 29.88 29.81 10 10 9 28 6 37 0.00 Thunderstorm
25 92 73 54 50 47 38 77 47 16 30.00 29.93 29.82 10 10 10 23 6 29 0.00 Thunderstorm
26 85 71 57 53 46 42 62 43 23 30.03 29.94 29.86 10 10 10 24 7 33 0.05 Rain
27 89 72 55 53 45 36 77 47 16 30.04 29.95 29.86 10 10 10 23 4 29 0.00  
28 85 71 56 55 49 42 72 50 28 30.06 29.97 29.90 10 10 8 26 4 35 0.04 Rain , Thunderstorm
29 91 73 54 58 49 39 86 53 19 30.13 30.03 29.89 10 10 10 17 4 25 0.02  
30 90 72 54 51 44 37 67 42 16 30.07 30.01 29.92 10 10 10 24 6 29 0.00  
31 85 69 53 43 38 31 59 37 14 30.14 30.06 29.99 10 10 10 13 6 15 0.00