Helena, MT

8:25 AM MDT on April 30, 2017 (GMT -0600)
Helena Regional

Weather History for KHLN - December, 2010

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Month of December, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 52 °F 27 °F 2 °F
Mean Temperature 39 °F 18 °F -4 °F
Min Temperature 30 °F 9 °F -10 °F
Degree Days  
Heating Degree Days (base 65) 69 47 26 1447
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 34 °F 12 °F -14 °F
Precipitation  
Precipitation 0.22 in 0.03 in 0.00 in 0.76 in
Snowdepth 4.0 in 2.1 in 0.0 in -
Wind  
Wind 32 mph 3 mph 0 mph
Gust Wind 43 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.67 in 30.08 in 29.08 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Dec. 03, 2010 Rise Set
Actual Time 7:53 AM MST 4:41 PM MST
Civil Twilight 7:19 AM MST 5:15 PM MST
Nautical Twilight 6:41 AM MST 5:53 PM MST
Astronomical Twilight 6:05 AM MST 6:30 PM MST
Moon 5:44 AM MST (12/3) 3:00 PM MST (12/3)
Length of Visible Light 9h 56m
Length of Day
8h 47m
Waning Crescent, 5% of the Moon is Illuminated
Dec 3
Waning Crescent
Dec 5
New
Dec 13
First Quarter
Dec 21
Full
Dec 27
Last Quarter

Daily Weather History & Observations

2010 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 35 25 14 25 20 10 88 77 66 30.24 30.18 30.01 10 10 8 9 2 10 0.00  
2 34 28 21 31 25 20 89 81 72 30.18 30.03 29.80 10 8 2 7 2 8 0.02 Snow
3 35 23 11 31 19 8 92 70 47 30.50 30.25 29.87 10 10 8 15 5 20 T  
4 20 11 2 12 6 0 95 84 73 30.64 30.45 30.30 10 6 0 5 0 5 0.00 Fog
5 16 10 4 9 5 2 92 84 76 30.67 30.46 30.34 8 2 0 6 1 7 T Fog , Snow
6 16 9 2 9 4 -1 92 86 80 30.60 30.35 30.16 7 2 0 6 1 7 T Fog , Snow
7 20 13 5 18 11 2 100 90 80 30.66 30.40 30.20 5 2 0 6 0 7 0.00 Fog
8 40 22 4 28 14 1 81 69 56 30.38 30.09 29.86 10 6 0 28 3 38 0.00 Fog
9 41 33 25 30 25 20 92 73 54 30.10 30.00 29.85 10 10 10 24 6 31 T  
10 42 27 12 32 21 10 89 67 44 30.28 29.93 29.65 10 10 7 32 7 43 0.01 Rain
11 35 22 9 23 16 7 88 70 51 30.51 30.34 30.15 10 8 3 9 2 15 T Snow
12 52 39 25 31 26 23 92 69 46 30.30 30.13 30.00 10 6 1 24 5 33 0.05 Snow
13 47 39 30 34 31 28 82 70 58 30.06 29.98 29.90 10 10 10 10 3 14 0.00  
14 45 36 27 34 26 15 92 68 44 29.85 29.62 29.42 10 10 6 30 6 39 0.03 Rain
15 36 30 23 18 15 12 63 53 43 30.09 29.88 29.63 10 10 10 25 9 32 T  
16 32 23 13 16 12 8 80 67 53 30.32 30.23 30.07 10 10 9 9 3 12 0.00  
17 17 13 9 11 9 5 92 83 73 30.33 30.23 30.03 10 8 2 8 4 10 T Snow
18 16 10 4 12 8 2 88 78 67 30.22 29.92 29.75 10 6 1 9 2 12 0.06 Snow
19 16 10 4 11 7 1 91 82 73 29.97 29.64 29.40 10 5 1 10 3 13 0.10 Snow
20 16 9 1 7 4 -2 95 78 61 30.15 29.73 29.41 10 5 0 10 3 13 0.14 Fog , Snow
21 11 2 -7 3 -3 -11 95 81 66 30.40 30.17 29.93 9 4 0 5 0 7 0.00 Fog
22 9 3 -4 5 -2 -8 91 85 79 30.39 30.17 30.02 6 4 0 5 0 6 0.00 Fog
23 20 12 3 11 6 2 96 82 67 30.52 30.37 30.13 7 5 4 8 1 9 0.00  
24 13 7 0 8 3 -3 95 88 80 30.63 30.45 30.26 5 2 0 5 0 5 0.00 Fog
25 22 9 -4 11 1 -8 96 82 67 30.48 30.25 30.05 6 3 0 7 1 7 0.00 Fog
26 41 26 10 26 15 7 92 72 51 30.08 29.97 29.91 10 7 3 26 4 36 0.00  
27 36 28 20 20 15 11 75 58 40 30.15 30.10 30.04 10 10 10 24 7 31 0.00  
28 42 30 18 28 20 11 85 66 46 30.05 29.75 29.36 10 10 10 12 2 16 0.00  
29 34 20 6 29 14 0 96 82 67 29.87 29.32 29.08 10 4 0 22 11 26 0.22 Fog , Snow
30 6 3 -1 -2 -5 -8 87 75 62 30.28 29.98 29.64 10 4 0 13 8 15 0.12 Fog , Snow
31 2 -4 -10 -7 -9 -14 83 73 62 30.37 30.20 29.97 10 7 2 10 2 12 0.01 Snow