Weather History for Helena, MT

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Tuesday, July 16, 2013

  Actual Average Record
Temperature  
Mean Temperature 68 °F 70 °F  
Max Temperature 83 °F 86 °F 100 °F (2007)
Min Temperature 53 °F 55 °F 39 °F (1999)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 0 21  
Since 1 June heating degree days 146 157  
Since 1 July heating degree days 0 21  
Cooling Degree Days 3 6  
Month to date cooling degree days 136 81  
Year to date cooling degree days 185 138  
Since 1 June cooling degree days 178 130  
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 47    
Maximum Humidity 66    
Minimum Humidity 28    
Precipitation  
Precipitation 0.03 in 0.03 in 0.63 in (1884)
Month to date precipitation 0.05 0.66  
Year to date precipitation 5.58 6.82  
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 9 mph (NW)    
Max Wind Speed 17 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. 16, 2013 Rise Set
Actual Time 5:50 AM MDT 9:16 PM MDT
Civil Twilight 5:13 AM MDT 9:53 PM MDT
Nautical Twilight 4:24 AM MDT 10:43 PM MDT
Astronomical Twilight 3:19 AM MDT 11:46 PM MDT
Moon 2:53 PM MDT (7/16) 12:33 AM MDT (7/16)
Length of Visible Light 16h 40m
Length of Day
15h 25m
First Quarter, 57% of the Moon is Illuminated
Jul 16
First Quarter
Jul 22
Full
Jul 29
Last Quarter
Aug 6
New
Aug 14
First 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 46.0 °F 58% 30.11 in 10.0 mi WNW 9.2 mph - N/A   Clear
1:53 AM 59.0 °F 44.1 °F 58% 30.12 in 10.0 mi WNW 11.5 mph - N/A   Clear
2:53 AM 57.9 °F 43.0 °F 58% 30.13 in 10.0 mi West 9.2 mph - N/A   Clear
3:53 AM 55.9 °F 43.0 °F 62% 30.14 in 10.0 mi West 9.2 mph - N/A   Clear
4:53 AM 54.0 °F 43.0 °F 66% 30.16 in 10.0 mi West 8.1 mph - N/A   Clear
5:53 AM 53.1 °F 43.0 °F 69% 30.17 in 10.0 mi West 9.2 mph - N/A   Clear
6:53 AM 55.0 °F 42.1 °F 62% 30.18 in 10.0 mi West 9.2 mph - N/A   Clear
7:53 AM 57.0 °F 42.1 °F 57% 30.19 in 10.0 mi WNW 8.1 mph - N/A   Clear
8:53 AM 61.0 °F 42.1 °F 50% 30.20 in 10.0 mi NW 4.6 mph - N/A   Clear
9:53 AM 63.0 °F 41.0 °F 45% 30.20 in 10.0 mi NW 8.1 mph - N/A   Clear
10:53 AM 66.0 °F 41.0 °F 40% 30.19 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:53 AM 70.0 °F 43.0 °F 38% 30.17 in 10.0 mi Variable 4.6 mph - N/A   Clear
12:53 PM 73.9 °F 45.0 °F 35% 30.14 in 10.0 mi North 3.5 mph - N/A   Clear
1:53 PM 75.9 °F 45.0 °F 33% 30.12 in 10.0 mi NNE 6.9 mph - N/A   Clear
2:53 PM 80.1 °F 46.0 °F 30% 30.10 in 10.0 mi North 10.4 mph - N/A   Clear
3:53 PM 80.1 °F 46.0 °F 30% 30.08 in 10.0 mi NNW 6.9 mph - N/A   Clear
4:53 PM 82.9 °F 46.0 °F 27% 30.05 in 10.0 mi North 12.7 mph 18.4 mph N/A   Clear
5:53 PM 82.9 °F 46.9 °F 28% 30.04 in 10.0 mi North 15.0 mph - N/A   Clear
6:53 PM 79.0 °F 48.0 °F 34% 30.06 in 10.0 mi North 15.0 mph - N/A   Clear
7:53 PM 75.9 °F 46.9 °F 36% 30.09 in 10.0 mi NNW 11.5 mph - N/A   Clear
8:53 PM 73.9 °F 46.9 °F 38% 30.10 in 10.0 mi NNW 10.4 mph - N/A   Clear
9:53 PM 73.0 °F 46.9 °F 39% 30.11 in 10.0 mi NW 8.1 mph - N/A   Clear
10:53 PM 72.0 °F 46.9 °F 41% 30.13 in 10.0 mi West 8.1 mph - N/A   Clear
11:53 PM 71.1 °F 46.9 °F 42% 30.12 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy