Weather History for Helena, MT

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Sunday, July 8, 2012

  Actual Average Record
Temperature  
Mean Temperature 74 °F 69 °F  
Max Temperature 94 °F 84 °F 101 °F (1886)
Min Temperature 54 °F 54 °F 39 °F (1944)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 0 13  
Since 1 June heating degree days 122 149  
Since 1 July heating degree days 0 13  
Cooling Degree Days 9 5  
Month to date cooling degree days 44 35  
Year to date cooling degree days 111 92  
Since 1 June cooling degree days 107 84  
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 43 °F    
Average Humidity 41    
Maximum Humidity 67    
Minimum Humidity 14    
Precipitation  
Precipitation 0.00 in 0.04 in 1.11 in (1926)
Month to date precipitation 0.07 0.34  
Year to date precipitation 5.27 6.50  
Snow  
Snow 0.00 in 0.00 in T in (1953)
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 30.15 in    
Wind  
Wind Speed 4 mph (NNW)    
Max Wind Speed 14 mph    
Max Gust Speed 20 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Jul. 08, 2012 Rise Set
Actual Time 5:43 AM MDT 9:21 PM MDT
Civil Twilight 5:05 AM MDT 10:00 PM MDT
Nautical Twilight 4:14 AM MDT 10:51 PM MDT
Astronomical Twilight 3:03 AM MDT 12:00 AM MDT
Moon 11:45 PM MDT (7/8) 11:38 AM MDT (7/8)
Length of Visible Light 16h 54m
Length of Day
15h 38m
Waning Gibbous, 72% of the Moon is Illuminated
Jul 8
Waning Gibbous
Jul 10
Last Quarter
Jul 18
New
Jul 26
First Quarter
Aug 1
Full

Hourly Weather History & Observations

Time (MDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 66.9 °F 46.0 °F 47% 30.16 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 64.0 °F 46.0 °F 52% 30.16 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 60.8 °F 44.6 °F 55% 30.22 in 10.0 mi West 6.9 mph - N/A   Clear
3:53 AM 57.9 °F 46.0 °F 65% 30.18 in 10.0 mi West 3.5 mph - N/A   Clear
4:53 AM 60.1 °F 46.0 °F 60% 30.19 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 57.2 °F 46.4 °F 67% 30.24 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 60.1 °F 45.0 °F 57% 30.21 in 10.0 mi WNW 4.6 mph - N/A   Clear
7:53 AM 61.0 °F 46.9 °F 60% 30.22 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 66.9 °F 46.9 °F 49% 30.22 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 71.1 °F 48.0 °F 44% 30.21 in 10.0 mi NW 3.5 mph - N/A   Clear
10:53 AM 75.9 °F 48.0 °F 37% 30.19 in 10.0 mi NE 4.6 mph - N/A   Clear
11:53 AM 81.0 °F 50.0 °F 34% 30.18 in 10.0 mi NNE 3.5 mph - N/A   Clear
12:53 PM 86.0 °F 48.0 °F 27% 30.15 in 10.0 mi NNE 6.9 mph - N/A   Clear
1:53 PM 88.0 °F 43.0 °F 21% 30.13 in 10.0 mi Variable 4.6 mph - N/A   Clear
2:53 PM 91.0 °F 36.0 °F 14% 30.11 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:53 PM 91.0 °F 35.1 °F 14% 30.10 in 10.0 mi NNE 5.8 mph - N/A   Clear
4:53 PM 91.0 °F 36.0 °F 14% 30.08 in 10.0 mi North 5.8 mph - N/A   Partly Cloudy
5:53 PM 91.9 °F 36.0 °F 14% 30.08 in 10.0 mi North 12.7 mph - N/A   Clear
6:53 PM 91.9 °F 37.0 °F 15% 30.07 in 10.0 mi North 9.2 mph - N/A   Clear
7:53 PM 91.0 °F 37.9 °F 15% 30.06 in 10.0 mi North 4.6 mph - N/A   Clear
8:53 PM 88.0 °F 34.0 °F 15% 30.06 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 80.1 °F 39.9 °F 24% 30.09 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 73.0 °F 39.9 °F 30% 30.11 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 72.0 °F 41.0 °F 33% 30.11 in 10.0 mi WSW 4.6 mph - N/A   Clear