Weather History for Helena, MT

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Tuesday, July 30, 2013

  Actual Average Record
Temperature  
Mean Temperature 67 °F 72 °F  
Max Temperature 78 °F 88 °F 101 °F (2000)
Min Temperature 55 °F 55 °F 42 °F (1995)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 26  
Since 1 June heating degree days 146 162  
Since 1 July heating degree days 0 26  
Cooling Degree Days 2 7  
Month to date cooling degree days 253 178  
Year to date cooling degree days 302 235  
Since 1 June cooling degree days 295 227  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 54    
Maximum Humidity 77    
Minimum Humidity 31    
Precipitation  
Precipitation T in 0.03 in 1.36 in (1975)
Month to date precipitation 0.88 1.15  
Year to date precipitation 6.41 7.31  
Snow  
Snow 0.00 in 0.00 in 0.00 in (1999)
Month to date snowfall 0.0 0.0  
Since 1 June snowfall 0.0 T  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 6 mph (West)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jul. 30, 2013 Rise Set
Actual Time 6:06 AM MDT 9:01 PM MDT
Civil Twilight 5:31 AM MDT 9:36 PM MDT
Nautical Twilight 4:45 AM MDT 10:21 PM MDT
Astronomical Twilight 3:51 AM MDT 11:15 PM MDT
Moon 12:29 AM MDT (7/30) 3:24 PM MDT (7/30)
Length of Visible Light 16h 05m
Length of Day
14h 54m
Last Quarter, 40% of the Moon is Illuminated
Jul 30
Last Quarter
Aug 6
New
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last Quarter

Hourly Weather History & Observations

Time (MDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 61.0 °F 48.0 °F 62% 30.06 in 10.0 mi West 10.4 mph - N/A   Clear
1:53 AM 60.1 °F 48.0 °F 64% 30.07 in 10.0 mi West 11.5 mph - N/A   Clear
2:53 AM 59.0 °F 48.0 °F 67% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
3:53 AM 57.9 °F 48.0 °F 70% 30.09 in 10.0 mi West 9.2 mph - N/A   Clear
4:53 AM 55.9 °F 48.0 °F 75% 30.11 in 10.0 mi West 8.1 mph - N/A   Clear
5:53 AM 55.0 °F 46.9 °F 74% 30.14 in 10.0 mi West 8.1 mph - N/A   Clear
6:53 AM 55.9 °F 46.9 °F 72% 30.14 in 10.0 mi West 5.8 mph - N/A   Clear
7:53 AM 57.9 °F 46.9 °F 67% 30.17 in 10.0 mi West 5.8 mph - N/A   Clear
8:53 AM 59.0 °F 46.9 °F 64% 30.17 in 10.0 mi North 4.6 mph - N/A   Clear
9:53 AM 62.1 °F 48.0 °F 60% 30.16 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 64.0 °F 48.0 °F 56% 30.16 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 68.0 °F 48.9 °F 50% 30.15 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 68.0 °F 50.0 °F 52% 30.15 in 10.0 mi NE 3.5 mph - N/A   Clear
1:53 PM 71.1 °F 48.0 °F 44% 30.13 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:53 PM 75.0 °F 46.9 °F 37% 30.11 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:53 PM 77.0 °F 46.9 °F 34% 30.09 in 10.0 mi Variable 4.6 mph - N/A   Clear
4:53 PM 75.9 °F 43.0 °F 31% 30.09 in 10.0 mi South 6.9 mph - 0.00 in   Partly Cloudy
5:53 PM 75.0 °F 46.0 °F 36% 30.12 in 10.0 mi South 6.9 mph - N/A   Clear
6:53 PM 77.0 °F 44.1 °F 31% 30.10 in 10.0 mi North 5.8 mph - N/A   Clear
7:53 PM 73.9 °F 48.0 °F 40% 30.12 in 10.0 mi NNE 5.8 mph - N/A   Clear
8:53 PM 71.1 °F 48.0 °F 44% 30.14 in 10.0 mi North 4.6 mph - N/A   Clear
9:53 PM 66.9 °F 46.9 °F 49% 30.17 in 10.0 mi WSW 6.9 mph - N/A   Clear
10:53 PM 66.0 °F 46.0 °F 48% 30.19 in 10.0 mi West 8.1 mph - N/A   Clear
11:53 PM 64.0 °F 46.0 °F 52% 30.20 in 10.0 mi WSW 8.1 mph - N/A   Clear