Weather History for Great Falls, MT

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 54 °F 41 °F 25 °F
Mean Temperature 48 °F 32 °F 18 °F
Min Temperature 43 °F 22 °F 3 °F
Degree Days  
Heating Degree Days (base 65) 47 33 17 1028
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 36 °F 18 °F 0 °F
Precipitation  
Precipitation 0.13 in 0.01 in 0.00 in 0.20 in
Snowdepth 2.0 in 0.1 in 0.0 in -
Wind  
Wind 45 mph 15 mph 0 mph
Gust Wind 58 mph 30 mph 20 mph
Sea Level Pressure  
Sea Level Pressure 30.78 in 30.13 in 29.43 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 14, 2011 Rise Set
Actual Time 8:05 AM MST 4:34 PM MST
Civil Twilight 7:29 AM MST 5:10 PM MST
Nautical Twilight 6:50 AM MST 5:49 PM MST
Astronomical Twilight 6:13 AM MST 6:27 PM MST
Moon 9:12 PM MST (12/14) 10:40 AM MST (12/14)
Length of Visible Light 9h 40m
Length of Day
8h 29m
Waning Gibbous, 83% of the Moon is Illuminated
Dec 14
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 9
Full

Weather History Calendar

Precipitation Actual month total 0.20 Normal Month Total: 0.55
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
38 | 13 0.00
Average:
37 | 18 0.02
Snow
Actual:
40 | 16 T
Average:
36 | 18 0.02
Partly Cloudy
Actual:
36 | 17 T
Average:
36 | 17 0.02
Snow
Actual:
29 | 8 T
Average:
36 | 17 0.01
Clear
Actual:
28 | 8 0.00
Average:
36 | 17 0.02
Clear
Actual:
43 | 21 0.00
Average:
35 | 17 0.02
Snow
Actual:
35 | 12 0.05
Average:
35 | 16 0.02
Partly Cloudy
Actual:
32 | 3 T
Average:
35 | 16 0.01
Scattered Clouds
Actual:
41 | 13 0.00
Average:
35 | 16 0.02
Clear
Actual:
49 | 34 0.00
Average:
35 | 16 0.02
Scattered Clouds
Actual:
40 | 16 0.00
Average:
35 | 15 0.02
Snow
Actual:
25 | 16 T
Average:
34 | 15 0.01
Scattered Clouds
Actual:
35 | 14 0.00
Average:
34 | 15 0.02
Mostly Cloudy
Actual:
36 | 25 0.00
Average:
34 | 15 0.02
Partly Cloudy
Actual:
39 | 21 0.00
Average:
34 | 15 0.01
Clear
Actual:
46 | 24 0.00
Average:
34 | 14 0.02
Clear
Actual:
54 | 39 0.00
Average:
34 | 14 0.02
Snow
Actual:
52 | 24 0.13
Average:
34 | 14 0.02
Fog
Actual:
38 | 16 0.00
Average:
34 | 14 0.02
Scattered Clouds
Actual:
43 | 33 0.00
Average:
34 | 14 0.01
Snow
Actual:
36 | 14 0.02
Average:
34 | 14 0.02
Clear
Actual:
34 | 17 0.00
Average:
34 | 14 0.02
Clear
Actual:
42 | 29 0.00
Average:
34 | 14 0.02
Scattered Clouds
Actual:
47 | 36 0.00
Average:
34 | 14 0.02
Clear
Actual:
52 | 38 0.00
Average:
34 | 14 0.01
Scattered Clouds
Actual:
40 | 26 0.00
Average:
34 | 14 0.02
Scattered Clouds
Actual:
44 | 35 0.00
Average:
34 | 14 0.02
Scattered Clouds
Actual:
53 | 43 0.00
Average:
34 | 14 0.02
Rain
Actual:
49 | 32 T
Average:
34 | 14 0.02
Scattered Clouds
Actual:
52 | 32 0.00
Average:
34 | 14 0.01
Scattered Clouds
Actual:
38 | 18 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

2011 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 38 26 13 19 16 11 92 68 44 30.78 30.45 29.93 10 10 9 32 17 41 0.00  
2 40 28 16 25 18 12 78 56 33 30.36 30.10 29.79 10 9 2 44 12 58 T Snow
3 36 27 17 25 16 13 92 65 38 30.36 30.21 30.08 10 10 9 22 13 26 T  
4 29 19 8 23 13 4 92 83 73 30.72 30.50 30.15 10 7 1 20 11 25 T Snow
5 28 18 8 14 8 2 80 63 46 30.57 30.35 30.11 10 10 10 25 18 30 0.00  
6 43 32 21 22 17 14 75 56 36 30.24 30.13 30.04 10 10 10 33 19 41 0.00  
7 35 24 12 26 18 12 92 81 69 30.52 30.30 30.09 10 7 2 22 6 28 0.05 Snow
8 32 18 3 18 10 0 96 77 58 30.45 30.33 30.16 10 8 1 14 4 16 T  
9 41 27 13 24 17 10 80 64 48 30.36 30.30 30.22 10 10 10 26 15 33 0.00  
10 49 42 34 19 16 14 56 40 24 30.18 29.99 29.83 10 10 10 29 20 35 0.00  
11 40 28 16 21 18 14 92 68 44 30.18 30.01 29.87 10 10 10 14 4 16 0.00  
12 25 21 16 21 19 15 100 87 74 30.31 30.16 30.00 10 8 0 9 4 12 T Snow
13 35 25 14 19 13 7 88 60 32 30.09 29.95 29.81 10 10 10 17 11 24 0.00  
14 36 31 25 20 17 9 75 55 35 30.20 30.07 29.81 10 10 10 17 8 21 0.00  
15 39 30 21 22 20 17 84 66 48 30.33 30.16 29.98 10 10 10 25 10 31 0.00  
16 46 35 24 28 23 17 74 60 45 30.32 30.29 30.19 10 10 10 23 15 32 0.00  
17 54 47 39 30 26 19 64 48 32 30.26 30.11 29.92 10 10 10 41 22 52 0.00  
18 52 38 24 28 25 14 100 63 26 30.41 30.06 29.81 10 5 0 28 13 36 0.13 Fog , Snow
19 38 27 16 26 21 14 96 76 56 30.39 30.20 29.96 10 8 0 22 13 28 0.00 Fog
20 43 38 33 28 23 20 59 54 48 29.98 29.86 29.78 10 10 10 31 20 41 0.00  
21 36 25 14 27 21 13 92 74 56 30.49 30.22 29.86 10 8 0 30 10 37 0.02 Fog , Snow
22 34 26 17 15 13 11 80 62 43 30.45 30.35 30.13 10 10 10 30 18 38 0.00  
23 42 36 29 16 9 2 50 37 23 30.37 30.27 30.12 10 10 10 35 22 44 0.00  
24 47 42 36 28 23 16 64 51 37 30.41 30.36 30.31 10 10 10 31 19 39 0.00  
25 52 45 38 28 24 15 60 47 33 30.34 30.07 29.85 10 10 10 31 17 41 0.00  
26 40 33 26 24 15 12 64 49 34 30.22 30.11 29.89 10 10 10 30 17 39 0.00  
27 44 40 35 26 21 12 53 44 35 30.03 29.94 29.86 10 10 10 40 24 52 0.00  
28 53 48 43 32 30 26 58 50 41 29.80 29.70 29.55 10 10 9 43 22 51 0.00  
29 49 41 32 36 24 14 89 61 33 29.90 29.67 29.43 10 10 10 45 24 56 T Rain
30 52 42 32 34 26 12 75 53 30 29.75 29.57 29.44 10 10 10 29 13 36 0.00  
31 38 28 18 22 12 7 69 51 32 30.50 30.13 29.65 10 10 10 29 18 38 0.00