Weather History for Helena, MT

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Month of August, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 97 °F 87 °F 62 °F
Mean Temperature 78 °F 70 °F 57 °F
Min Temperature 65 °F 53 °F 40 °F
Degree Days  
Heating Degree Days (base 65) 8 1 0 21
Cooling Degree Days (base 65) 13 6 0 190
Growing Degree Days (base 50) 28 20 7 620
Dew Point  
Dew Point 57 °F 38 °F 14 °F
Precipitation  
Precipitation 0.23 in 0.02 in 0.00 in 0.66 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 31 mph 6 mph 0 mph
Gust Wind 44 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.28 in 29.99 in 29.71 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Aug. 05, 2012 Rise Set
Actual Time 6:14 AM MDT 8:52 PM MDT
Civil Twilight 5:39 AM MDT 9:27 PM MDT
Nautical Twilight 4:56 AM MDT 10:10 PM MDT
Astronomical Twilight 4:05 AM MDT 11:00 PM MDT
Moon 10:12 PM MDT (8/5) 10:26 AM MDT (8/5)
Length of Visible Light 15h 47m
Length of Day
14h 38m
Waning Gibbous, 86% of the Moon is Illuminated
Aug 5
Waning Gibbous
Aug 9
Last Quarter
Aug 17
New
Aug 24
First Quarter
Aug 31
Full

Weather History Calendar

Precipitation Actual month total 0.66 Normal Month Total: 1.20
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
91 | 65 0.00
Average:
88 | 55 0.04
Scattered Clouds
Actual:
85 | 57 0.00
Average:
88 | 55 0.03
Rain
Actual:
74 | 47 0.16
Average:
88 | 55 0.04
Clear
Actual:
83 | 46 0.00
Average:
88 | 55 0.03
Clear
Actual:
94 | 51 0.00
Average:
88 | 55 0.04
Clear
Actual:
91 | 60 0.00
Average:
87 | 54 0.03
Clear
Actual:
97 | 55 0.00
Average:
87 | 54 0.04
Clear
Actual:
97 | 56 T
Average:
87 | 54 0.04
Clear
Actual:
94 | 59 0.00
Average:
87 | 54 0.04
Thunderstorm
Actual:
83 | 61 0.23
Average:
87 | 54 0.04
Scattered Clouds
Actual:
89 | 58 0.00
Average:
86 | 54 0.04
Clear
Actual:
90 | 60 0.00
Average:
86 | 53 0.04
Clear
Actual:
93 | 55 0.00
Average:
86 | 53 0.04
Scattered Clouds
Actual:
93 | 57 0.00
Average:
86 | 53 0.04
Overcast
Actual:
62 | 52 T
Average:
85 | 53 0.03
Scattered Clouds
Actual:
82 | 44 0.00
Average:
85 | 53 0.04
Clear
Actual:
89 | 50 0.00
Average:
85 | 52 0.04
Clear
Actual:
90 | 50 0.00
Average:
84 | 52 0.04
Clear
Actual:
88 | 50 0.00
Average:
84 | 52 0.04
Clear
Actual:
92 | 55 0.00
Average:
84 | 52 0.04
Thunderstorm
Actual:
90 | 59 0.17
Average:
83 | 51 0.04
Clear
Actual:
86 | 54 0.00
Average:
83 | 51 0.04
Clear
Actual:
88 | 51 0.00
Average:
83 | 51 0.04
Scattered Clouds
Actual:
74 | 52 0.00
Average:
82 | 50 0.04
Clear
Actual:
80 | 40 0.00
Average:
82 | 50 0.04
Clear
Actual:
86 | 45 0.00
Average:
82 | 50 0.04
Rain
Actual:
92 | 53 0.10
Average:
81 | 50 0.04
Clear
Actual:
97 | 53 0.00
Average:
81 | 49 0.04
Scattered Clouds
Actual:
82 | 58 0.00
Average:
80 | 49 0.04
Scattered Clouds
Actual:
82 | 49 0.00
Average:
80 | 49 0.04
Scattered Clouds
Actual:
90 | 47 T
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

2012 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 91 78 65 34 30 24 27 18 9 30.10 29.97 29.90 10 10 10 25 9 33 0.00  
2 85 71 57 47 32 25 52 32 12 30.00 29.93 29.85 10 10 10 26 10 35 0.00  
3 74 61 47 46 41 36 86 56 25 30.18 30.09 29.99 10 10 4 24 6 30 0.16 Rain
4 83 65 46 44 38 30 82 49 15 30.23 30.14 30.05 10 10 10 14 5 20 0.00  
5 94 73 51 40 36 31 54 33 11 30.11 30.04 29.94 10 10 10 14 3 16 0.00  
6 91 76 60 44 41 38 48 33 17 30.13 30.08 30.01 10 10 10 21 5 26 0.00  
7 97 76 55 48 39 28 62 36 9 30.19 30.10 30.02 10 10 10 20 4 39 0.00  
8 97 77 56 47 40 32 41 28 15 30.10 30.04 29.94 10 10 9 26 4 36 T  
9 94 77 59 48 45 38 60 38 16 30.17 30.05 29.95 10 10 8 12 4 16 0.00  
10 83 72 61 57 47 41 60 43 26 30.05 29.95 29.88 10 10 6 28 7 39 0.23 Rain , Thunderstorm
11 89 74 58 57 48 33 86 51 15 30.06 30.01 29.97 10 10 10 14 4 17 0.00  
12 90 75 60 49 46 35 64 40 16 30.17 30.04 29.94 10 10 10 9 5 14 0.00  
13 93 74 55 48 37 22 62 35 8 30.03 29.94 29.86 10 10 10 18 6 24 0.00  
14 93 75 57 49 37 29 67 39 11 30.08 29.86 29.71 10 10 9 31 11 44 0.00  
15 62 57 52 48 44 42 77 64 51 30.28 30.19 30.03 10 10 10 21 11 25 T  
16 82 63 44 45 41 39 83 54 25 30.25 30.13 30.00 10 10 10 13 5 15 0.00  
17 89 70 50 41 34 23 61 35 9 30.13 30.07 30.00 10 10 10 12 4 15 0.00  
18 90 70 50 40 32 25 50 30 10 30.21 30.08 29.97 10 10 10 12 3 17 0.00  
19 88 69 50 38 35 33 54 35 15 30.09 29.98 29.91 10 10 10 17 4 21 0.00  
20 92 74 55 41 38 33 51 32 13 30.01 29.96 29.89 10 10 9 14 4 16 0.00  
21 90 75 59 56 44 38 78 49 19 29.96 29.90 29.78 10 9 4 26 6 38 0.17 Rain , Thunderstorm
22 86 70 54 56 46 37 93 56 19 30.01 29.92 29.84 10 10 9 21 5 28 0.00  
23 88 70 51 40 33 27 59 35 11 29.94 29.84 29.72 10 10 7 16 4 20 0.00  
24 74 63 52 34 24 14 46 28 10 30.04 29.90 29.79 10 10 10 30 13 44 0.00  
25 80 60 40 30 25 19 58 35 11 30.08 29.98 29.88 10 10 10 13 4 15 0.00  
26 86 66 45 34 28 22 42 27 11 30.08 29.98 29.89 10 10 10 15 4 18 0.00  
27 92 73 53 54 45 35 57 39 20 30.08 29.99 29.93 10 10 10 24 6 26 0.10 Rain
28 97 75 53 51 42 27 72 40 8 30.07 29.90 29.72 10 10 10 18 5 24 0.00  
29 82 70 58 39 34 31 39 28 16 30.01 29.88 29.75 10 9 4 30 11 40 0.00  
30 82 66 49 38 33 28 56 35 14 30.08 29.97 29.88 10 10 9 14 5 18 0.00  
31 90 69 47 44 34 28 61 37 13 29.98 29.86 29.71 10 10 7 26 5 33 T