Weather History for Great Falls, MT

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 58 °F 35 °F 4 °F
Mean Temperature 47 °F 26 °F -1 °F
Min Temperature 37 °F 17 °F -8 °F
Degree Days  
Heating Degree Days (base 65) 66 39 18 1205
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 41 °F 14 °F -12 °F
Precipitation  
Precipitation 0.22 in 0.02 in 0.00 in 0.55 in
Snowdepth 3.0 in 1.4 in 0.0 in -
Wind  
Wind 45 mph 13 mph 0 mph
Gust Wind 55 mph 31 mph 20 mph
Sea Level Pressure  
Sea Level Pressure 30.58 in 29.92 in 29.19 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 07, 2012 Rise Set
Actual Time 7:59 AM MST 4:34 PM MST
Civil Twilight 7:24 AM MST 5:10 PM MST
Nautical Twilight 6:45 AM MST 5:49 PM MST
Astronomical Twilight 6:08 AM MST 6:26 PM MST
Moon 12:59 AM MST (12/7) 12:54 PM MST (12/7)
Length of Visible Light 9h 45m
Length of Day
8h 34m
Last Quarter, 38% of the Moon is Illuminated
Dec 7
Last Quarter
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Weather History Calendar

Precipitation Actual month total 0.55 Normal Month Total: 0.55
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
56 | 37 0.00
Average:
37 | 18 0.02
Partly Cloudy
Actual:
58 | 34 0.01
Average:
36 | 18 0.02
Clear
Actual:
48 | 37 0.00
Average:
36 | 17 0.02
Scattered Clouds
Actual:
55 | 36 T
Average:
36 | 17 0.01
Clear
Actual:
55 | 32 0.00
Average:
36 | 17 0.02
Partly Cloudy
Actual:
36 | 27 0.00
Average:
35 | 17 0.02
Partly Cloudy
Actual:
40 | 28 0.00
Average:
35 | 16 0.02
Snow
Actual:
30 | -2 0.21
Average:
35 | 16 0.01
Fog
Actual:
30 | -8 0.00
Average:
35 | 16 0.02
Partly Cloudy
Actual:
35 | 23 0.00
Average:
35 | 16 0.02
Partly Cloudy
Actual:
42 | 26 0.00
Average:
35 | 15 0.02
Snow
Actual:
40 | 27 T
Average:
34 | 15 0.01
Scattered Clouds
Actual:
38 | 23 0.00
Average:
34 | 15 0.02
Clear
Actual:
43 | 20 0.00
Average:
34 | 15 0.02
Clear
Actual:
36 | 16 0.00
Average:
34 | 15 0.01
Scattered Clouds
Actual:
37 | 26 0.00
Average:
34 | 14 0.02
Scattered Clouds
Actual:
43 | 30 0.00
Average:
34 | 14 0.02
Partly Cloudy
Actual:
32 | 12 0.00
Average:
34 | 14 0.02
Clear
Actual:
32 | 12 0.00
Average:
34 | 14 0.02
Clear
Actual:
44 | 29 0.00
Average:
34 | 14 0.01
Partly Cloudy
Actual:
50 | 14 0.00
Average:
34 | 14 0.02
Snow
Actual:
14 | 11 T
Average:
34 | 14 0.02
Snow
Actual:
19 | 3 0.01
Average:
34 | 14 0.02
Snow
Actual:
4 | -7 0.22
Average:
34 | 14 0.02
Partly Cloudy
Actual:
6 | -8 0.00
Average:
34 | 14 0.01
Snow
Actual:
7 | -3 0.04
Average:
34 | 14 0.02
Scattered Clouds
Actual:
24 | -4 0.00
Average:
34 | 14 0.02
Scattered Clouds
Actual:
32 | 14 0.00
Average:
34 | 14 0.02
Snow
Actual:
32 | 19 0.02
Average:
34 | 14 0.02
Snow
Actual:
27 | 10 0.04
Average:
34 | 14 0.01
Partly Cloudy
Actual:
29 | 14 0.00
Average:
34 | 14 0.02
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & 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  
1 56 47 37 33 30 25 76 57 38 29.74 29.67 29.61 10 10 10 31 16 40 0.00  
2 58 46 34 41 31 21 82 63 43 29.65 29.40 29.19 10 10 10 32 17 41 0.01  
3 48 43 37 23 22 21 52 43 34 30.07 29.92 29.69 10 10 10 39 22 45 0.00  
4 55 46 36 33 27 19 60 49 38 30.10 29.91 29.73 10 10 10 37 20 47 T  
5 55 44 32 34 22 11 50 36 22 30.06 29.78 29.59 10 9 2 45 23 55 0.00  
6 36 32 27 19 16 14 59 50 40 30.09 30.03 29.95 10 10 10 17 11 21 0.00  
7 40 34 28 25 18 13 78 56 33 29.96 29.83 29.65 10 10 10 25 13 30 0.00  
8 30 14 -2 25 10 -4 87 82 76 30.47 29.98 29.58 10 3 0 33 7 41 0.21 Fog , Snow
9 30 11 -8 16 -1 -12 87 72 57 30.50 30.26 29.99 10 6 0 32 15 37 0.00 Fog
10 35 29 23 21 17 13 68 62 56 30.05 30.00 29.84 10 10 10 26 14 32 0.00  
11 42 34 26 27 24 17 75 62 49 29.91 29.63 29.51 10 10 10 33 22 43 0.00  
12 40 34 27 29 26 23 84 72 59 29.91 29.71 29.54 10 8 1 20 6 24 T Snow
13 38 31 23 25 18 13 84 64 44 29.93 29.85 29.66 10 10 6 29 16 33 0.00  
14 43 32 20 21 17 12 74 57 39 29.86 29.73 29.49 20 10 10 25 13 33 0.00  
15 36 26 16 18 14 10 80 62 44 29.94 29.81 29.62 10 10 10 23 12 28 0.00  
16 37 32 26 17 14 12 63 50 37 29.72 29.65 29.56 10 10 10 31 18 38 0.00  
17 43 37 30 26 19 11 64 52 39 29.54 29.40 29.30 10 10 10 30 17 37 0.00  
18 32 22 12 13 8 4 67 49 31 29.98 29.77 29.52 10 10 10 29 17 36 0.00  
19 32 22 12 9 7 5 67 50 32 30.09 30.04 29.97 10 10 10 35 18 43 0.00  
20 44 37 29 17 12 7 42 36 29 30.02 29.95 29.88 10 10 10 37 25 45 0.00  
21 50 32 14 18 12 7 74 49 23 30.14 29.97 29.89 10 10 8 26 12 32 0.00  
22 14 13 11 9 7 6 84 79 73 30.22 30.08 29.87 10 5 2 14 7 16 T Snow
23 19 11 3 10 6 -2 84 76 67 30.17 30.05 29.85 10 7 1 15 7 17 0.01 Snow
24 4 -1 -7 -2 -6 -11 87 76 65 30.58 30.22 29.93 10 3 1 10 5 12 0.22 Snow
25 6 -1 -8 -4 -7 -11 82 75 68 30.55 30.30 29.89 10 9 2 9 3 10 0.00  
26 7 2 -3 0 -4 -8 86 78 69 30.15 29.94 29.74 10 7 1 7 1 8 0.04 Snow
27 24 11 -4 15 5 -9 84 74 64 30.11 30.07 30.01 10 10 9 12 3 - 0.00  
28 32 23 14 18 13 7 74 66 58 30.17 30.08 29.89 10 10 10 15 10 16 0.00  
29 32 26 19 21 15 11 68 59 50 30.14 30.08 29.95 10 8 1 22 11 25 0.02 Snow
30 27 19 10 21 16 6 88 75 62 30.23 30.11 29.97 10 6 2 15 10 16 0.04 Snow
31 29 22 14 18 12 6 73 65 56 30.24 30.18 30.04 10 10 10 23 16 26 0.00