Weather History for Helena, MT

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Thursday, October 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 40 °F 45 °F  
Max Temperature 47 °F 58 °F 80 °F (2003)
Min Temperature 32 °F 32 °F 11 °F (1930)
Degree Days  
Heating Degree Days 25 20  
Month to date heating degree days 364 282  
Since 1 July heating degree days 541 588  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 589 406  
Moisture  
Dew Point 31 °F    
Average Humidity 78    
Maximum Humidity 96    
Minimum Humidity 60    
Precipitation  
Precipitation 0.02 in 0.03 in 0.53 in (1916)
Month to date precipitation 0.32 0.42  
Year to date precipitation 9.90 10.07  
Snow  
Snow 0.00 in 0.10 in 4.50 in (1916)
Month to date snowfall T 1.1  
Since 1 July snowfall T 2.7  
Since 1 September snowfall T 2.4  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.30 in    
Wind  
Wind Speed 4 mph (WSW)    
Max Wind Speed 20 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events Rain    
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

Oct. 17, 2013 Rise Set
Actual Time 7:48 AM MDT 6:36 PM MDT
Civil Twilight 7:18 AM MDT 7:07 PM MDT
Nautical Twilight 6:43 AM MDT 7:42 PM MDT
Astronomical Twilight 6:08 AM MDT 8:17 PM MDT
Moon 5:55 PM MDT (10/17) 6:21 AM MDT (10/17)
Length of Visible Light 11h 49m
Length of Day
10h 48m
Waxing Gibbous, 98% of the Moon is Illuminated
Oct 17
Waxing Gibbous
Oct 18
Full
Oct 26
Last Quarter
Nov 3
New
Nov 9
First Quarter

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 37.0 °F 33.3 °F 32.0 °F 82% 30.30 in 10.0 mi West 4.6 mph - N/A   Overcast
1:53 AM 36.0 °F 33.3 °F 30.9 °F 82% 30.29 in 10.0 mi WSW 3.5 mph - N/A   Overcast
2:53 AM 37.0 °F 34.5 °F 32.0 °F 82% 30.29 in 10.0 mi WSW 3.5 mph - N/A   Overcast
3:53 AM 36.0 °F 33.3 °F 30.9 °F 82% 30.27 in 10.0 mi West 3.5 mph - N/A   Overcast
4:53 AM 34.0 °F - 32.0 °F 92% 30.27 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 35.1 °F - 32.0 °F 89% 30.27 in 10.0 mi Calm Calm - N/A   Overcast
6:53 AM 35.1 °F - 30.9 °F 85% 30.27 in 10.0 mi Calm Calm - N/A   Overcast
7:53 AM 32.0 °F - 30.0 °F 92% 30.28 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:53 AM 33.1 °F - 30.9 °F 92% 30.29 in 9.0 mi Calm Calm - N/A   Overcast
9:53 AM 34.0 °F - 30.9 °F 89% 30.30 in 10.0 mi Calm Calm - N/A   Overcast
10:53 AM 36.0 °F 32.1 °F 32.0 °F 86% 30.29 in 10.0 mi South 4.6 mph - N/A   Overcast
11:53 AM 39.9 °F - 33.1 °F 77% 30.29 in 10.0 mi Calm Calm - N/A   Overcast
12:53 PM 39.9 °F - 33.1 °F 77% 30.30 in 10.0 mi Calm Calm - N/A   Overcast
1:53 PM 46.0 °F - 33.1 °F 61% 30.27 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:53 PM 44.1 °F - 32.0 °F 63% 30.26 in 9.0 mi Calm Calm - N/A   Overcast
3:17 PM 41.0 °F 33.1 °F 33.8 °F 76% 30.19 in 7.0 mi North 15.0 mph 20.7 mph 0.01 in Rain Light Rain
3:53 PM 39.9 °F 33.4 °F 33.1 °F 77% 30.30 in 10.0 mi West 10.4 mph - 0.02 in   Overcast
4:53 PM 42.1 °F 36.6 °F 33.1 °F 70% 30.30 in 10.0 mi West 9.2 mph - N/A   Overcast
5:53 PM 42.1 °F 37.1 °F 32.0 °F 67% 30.30 in 10.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
6:53 PM 42.1 °F 37.7 °F 30.9 °F 65% 30.32 in 10.0 mi NW 6.9 mph - N/A   Overcast
7:53 PM 41.0 °F 38.0 °F 30.9 °F 67% 30.35 in 10.0 mi West 4.6 mph - N/A   Overcast
8:53 PM 39.9 °F 33.4 °F 30.0 °F 68% 30.37 in 10.0 mi WNW 10.4 mph - N/A   Overcast
9:53 PM 39.9 °F 33.9 °F 28.9 °F 65% 30.38 in 10.0 mi West 9.2 mph - N/A   Overcast
10:53 PM 39.0 °F 34.0 °F 28.9 °F 67% 30.38 in 10.0 mi WSW 6.9 mph - N/A   Clear
11:53 PM 37.9 °F 33.5 °F 28.0 °F 68% 30.37 in 10.0 mi SSW 5.8 mph - N/A   Clear