Weather History for Helena, MT

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Thursday, October 6, 2011

  Actual Average Record
Temperature  
Mean Temperature 48 °F 50 °F  
Max Temperature 52 °F 63 °F 84 °F (1960)
Min Temperature 44 °F 36 °F 19 °F (1974)
Degree Days  
Heating Degree Days 17 15  
Month to date heating degree days 37 86  
Since 1 July heating degree days 167 392  
Cooling Degree Days 0 0  
Month to date cooling degree days 1 0  
Year to date cooling degree days 358 406  
Moisture  
Dew Point 43 °F    
Average Humidity 81    
Maximum Humidity 93    
Minimum Humidity 68    
Precipitation  
Precipitation 0.03 in 0.03 in 0.55 in (1925)
Month to date precipitation 0.23 0.16  
Year to date precipitation 12.12 9.81  
Snow  
Snow 0.00 in 0.10 in 5.70 in (1925)
Month to date snowfall 0.0 0.4  
Since 1 July snowfall 0.0 2.0  
Since 1 September snowfall 0.0 1.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.62 in    
Wind  
Wind Speed 8 mph (NW)    
Max Wind Speed 18 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Oct. 06, 2011 Rise Set
Actual Time 7:33 AM MDT 6:58 PM MDT
Civil Twilight 7:02 AM MDT 7:28 PM MDT
Nautical Twilight 6:27 AM MDT 8:03 PM MDT
Astronomical Twilight 5:52 AM MDT 8:38 PM MDT
Moon 4:28 PM MDT (10/6) 2:07 AM MDT (10/6)
Length of Visible Light 12h 25m
Length of Day
11h 25m
Waxing Gibbous, 76% of the Moon is Illuminated
Oct 6
Waxing Gibbous
Oct 11
Full
Oct 19
Last Quarter
Oct 26
New
Nov 2
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 51.1 °F - 48.9 °F 92% 29.47 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
1:53 AM 52.0 °F - 48.9 °F 89% 29.47 in 10.0 mi WSW 3.5 mph - N/A   Overcast
2:34 AM 51.8 °F - 48.2 °F 88% 29.46 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
2:53 AM 51.1 °F - 48.0 °F 89% 29.47 in 10.0 mi West 4.6 mph - N/A   Overcast
3:37 AM 51.8 °F - 48.2 °F 88% 29.48 in 10.0 mi NW 3.5 mph - N/A   Overcast
3:51 AM 51.8 °F - 48.2 °F 88% 29.47 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
3:53 AM 52.0 °F - 48.9 °F 89% 29.46 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
4:38 AM 51.8 °F - 48.2 °F 88% 29.49 in 10.0 mi NNW 4.6 mph - N/A   Overcast
4:53 AM 50.0 °F - 48.0 °F 93% 29.50 in 10.0 mi NNW 5.8 mph - N/A   Overcast
5:53 AM 50.0 °F - 46.0 °F 86% 29.52 in 10.0 mi NNW 4.6 mph - N/A   Overcast
6:53 AM 48.9 °F - 44.1 °F 83% 29.54 in 10.0 mi WNW 9.2 mph - N/A   Overcast
7:53 AM 48.0 °F - 42.1 °F 80% 29.57 in 10.0 mi NW 8.1 mph - N/A   Overcast
8:53 AM 48.2 °F - 42.8 °F 82% 29.56 in 10.0 mi NW 9.2 mph - N/A   Overcast
9:53 AM 48.9 °F - 41.0 °F 74% 29.59 in 10.0 mi NW 9.2 mph - N/A   Overcast
10:53 AM 50.0 °F - 41.0 °F 71% 29.61 in 10.0 mi North 9.2 mph - N/A   Overcast
11:53 AM 51.1 °F - 41.0 °F 68% 29.62 in 10.0 mi NW 15.0 mph 18.4 mph N/A   Overcast
12:53 PM 50.0 °F - 41.0 °F 71% 29.64 in 10.0 mi NNW 9.2 mph - N/A   Overcast
1:53 PM 51.1 °F - 41.0 °F 68% 29.64 in 10.0 mi NNW 9.2 mph - N/A   Overcast
2:17 PM 51.8 °F - 39.2 °F 62% 29.62 in 10.0 mi NNW 11.5 mph - N/A   Overcast
2:53 PM 51.1 °F - 41.0 °F 68% 29.65 in 10.0 mi NNW 10.4 mph - N/A   Overcast
3:53 PM 50.0 °F - 41.0 °F 71% 29.68 in 10.0 mi North 11.5 mph - N/A   Overcast
4:14 PM 50.0 °F - 41.0 °F 71% 29.66 in 10.0 mi North 11.5 mph - N/A   Overcast
4:53 PM 50.0 °F - 41.0 °F 71% 29.69 in 10.0 mi NNW 11.5 mph - N/A   Overcast
5:53 PM 48.9 °F - 41.0 °F 74% 29.71 in 10.0 mi North 8.1 mph - N/A   Overcast
6:53 PM 46.9 °F - 41.0 °F 80% 29.74 in 10.0 mi NNW 3.5 mph - N/A   Overcast
7:53 PM 46.9 °F - 41.0 °F 80% 29.75 in 10.0 mi WNW 9.2 mph - 0.00 in Rain Light Rain
8:18 PM 46.4 °F 42.4 °F 41.0 °F 81% 29.71 in 10.0 mi WNW 8.1 mph - 0.00 in Rain Light Rain
8:26 PM 46.4 °F 42.4 °F 41.0 °F 81% 29.71 in 10.0 mi WNW 8.1 mph - 0.00 in   Overcast
8:53 PM 46.0 °F 42.5 °F 41.0 °F 83% 29.76 in 10.0 mi NNW 6.9 mph - 0.00 in   Overcast
9:05 PM 46.4 °F 43.5 °F 41.0 °F 81% 29.71 in 10.0 mi NW 5.8 mph - N/A   Overcast
9:53 PM 46.0 °F 44.8 °F 42.1 °F 86% 29.76 in 10.0 mi WNW 3.5 mph - N/A   Overcast
10:24 PM 46.4 °F 44.3 °F 42.8 °F 87% 29.72 in 10.0 mi NNW 4.6 mph - 0.00 in Rain Light Rain
10:53 PM 45.0 °F 43.5 °F 43.0 °F 93% 29.76 in 7.0 mi West 3.5 mph - 0.01 in Rain Light Rain
11:26 PM 44.6 °F 43.1 °F 42.8 °F 93% 29.71 in 5.0 mi West 3.5 mph - 0.00 in Rain Light Rain
11:53 PM 44.1 °F 40.1 °F 43.0 °F 96% 29.74 in 7.0 mi West 6.9 mph - 0.01 in   Overcast