Weather History for Helena, MT

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Week of November 25, 2012 through December 1, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 55 °F 44 °F 33 °F
Mean Temperature 45 °F 35 °F 26 °F
Min Temperature 36 °F 26 °F 18 °F
Degree Days  
Heating Degree Days (base 65) 39 30 20 212
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 39 °F 24 °F 13 °F
Precipitation  
Precipitation 0.03 in 0.01 in 0.00 in 0.05 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 35 mph 3 mph 0 mph
Gust Wind 45 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.44 in 30.06 in 29.62 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Nov. 25, 2012 Rise Set
Actual Time 7:44 AM MST 4:45 PM MST
Civil Twilight 7:10 AM MST 5:19 PM MST
Nautical Twilight 6:33 AM MST 5:56 PM MST
Astronomical Twilight 5:57 AM MST 6:32 PM MST
Moon 3:10 PM MST (11/25) 4:55 AM MST (11/25)
Length of Visible Light 10h 08m
Length of Day
9h 00m
Waxing Gibbous, 93% of the Moon is Illuminated
Nov 25
Waxing Gibbous
Nov 28
Full
Dec 6
Last Quarter
Dec 13
New
Dec 19
First Quarter

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Nov high avg low high avg low high avg low high avg low high avg low high avg high sum  
25 39 32 25 29 20 13 75 54 33 30.37 30.17 30.03 10 10 9 24 7 31 T Snow
26 34 26 18 18 16 14 84 66 47 30.44 30.36 30.14 10 10 10 9 3 12 0.00  
27 33 26 19 23 19 15 84 73 61 30.38 30.31 30.25 10 10 9 5 0 6 0.00  
28 41 32 22 25 23 19 92 69 46 30.24 30.11 29.97 10 10 8 7 1 7 0.00  
29 50 40 30 33 28 24 89 63 36 30.04 29.95 29.85 10 10 10 15 3 22 0.00  
30 53 45 36 39 32 27 89 69 49 29.85 29.72 29.62 10 10 7 18 4 26 0.03  
2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 55 42 29 37 32 28 92 65 38 29.84 29.78 29.65 10 10 5 35 4 45 0.02 Rain