History for Helena, MT

Week of December 30, 2012 through January 5, 2013 — View Current Conditions
Week of December 30, 2012 through January 5, 2013
« Previous Week
Next Week »
Daily Weekly Monthly Custom
  Max Avg Min Sum
Temperature
Max Temperature 29 °F 23 °F 17 °F
Mean Temperature 19 °F 13 °F 8 °F
Min Temperature 9 °F 3 °F -3 °F
Degree Days
Heating Degree Days (base 65) 57 52 46 361
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point
Dew Point 14 °F 7 °F -4 °F
Precipitation
Precipitation 0.01 in 0.00 in 0.00 in 0.01 in
Snowdepth 4.0 in 3.7 in 3.0 in -
Wind
Wind 18 mph 2 mph 0 mph
Gust Wind 23 mph 22 mph 22 mph
Sea Level Pressure
Sea Level Pressure 30.72 in 30.44 in 30.09 in
Weekly Graph
Certify This Report
History Location
Airport:
 
Trip Planner
Search our historical database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it will be!
Date:
Astronomy
May. 22, 2013 Rise Set
Actual Time 8:12 AM MST 4:54 PM MST
Civil Twilight 7:37 AM MST 5:29 PM MST
Nautical Twilight 6:59 AM MST 6:07 PM MST
Astronomical Twilight 6:22 AM MST 6:43 PM MST
Moon No Moon Rise 11:28 AM MST (1/4)
Length Of Visible Light 9h 51m
Length of Day
8h 42m
Waning Gibbous, 54% of the Moon is Illuminated
Jan 4
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full
Visit Astronomy
Daily Observations
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  
30 26 17 7 12 9 5 92 74 55 30.34 30.28 30.22 10 9 4 18 3 23 0.01 Snow
31 23 13 3 13 8 0 92 77 62 30.41 30.30 30.09 10 8 0 8 2 10 T Fog , Snow
2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 29 19 9 14 11 6 83 67 50 30.58 30.44 30.17 10 10 10 17 5 21 0.00  
2 17 9 0 7 2 -3 95 81 67 30.72 30.62 30.39 10 9 1 6 1 8 0.00  
3 17 8 -1 5 2 -4 95 78 61 30.66 30.57 30.48 10 9 6 5 1 5 0.00  
4 24 11 -3 13 4 -3 87 72 56 30.54 30.47 30.24 10 9 7 9 1 12 0.00  
5 28 17 6 14 10 4 83 69 55 30.54 30.43 30.20 10 10 9 7 2 8 0.00  
Comma Delimited File