Weather History for Lewistown, MT

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Month of December, 2014

  Max Avg Min Sum
Temperature  
Max Temperature 63 °F 40 °F 9 °F
Mean Temperature 49 °F 30 °F 0 °F
Min Temperature 40 °F 19 °F -21 °F
Degree Days  
Heating Degree Days (base 65) 65 35 16 1100
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 37 °F 20 °F -25 °F
Precipitation  
Precipitation 0.31 in 0.03 in 0.00 in 0.64 in
Snowdepth 9.0 in 2.2 in 0.0 in -
Wind  
Wind 32 mph 9 mph 0 mph
Gust Wind 43 mph 26 mph 18 mph
Sea Level Pressure  
Sea Level Pressure 31.07 in 30.04 in 29.36 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 25, 2014 Rise Set
Actual Time 8:02 AM MST 4:33 PM MST
Civil Twilight 7:27 AM MST 5:09 PM MST
Nautical Twilight 6:48 AM MST 5:47 PM MST
Astronomical Twilight 6:11 AM MST 6:25 PM MST
Moon 10:23 AM MST (12/25) 9:27 PM MST (12/25)
Length of Visible Light 9h 41m
Length of Day
8h 30m
Waxing Crescent, 18% of the Moon is Illuminated
Dec 25
Waxing Crescent
Dec 28
First Quarter
Jan 4
Full
Jan 13
Last Quarter
Jan 20
New

Weather History Calendar

Precipitation Actual month total 0.64 Normal Month Total: 0.66
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
38 | 2 0.00
Average:
37 | 15 0.02
Scattered Clouds
Actual:
31 | 8 0.00
Average:
36 | 15 0.02
Clear
Actual:
37 | 9 0.00
Average:
36 | 15 0.03
Rain
Actual:
44 | 20 0.02
Average:
36 | 14 0.02
Partly Cloudy
Actual:
41 | 28 0.00
Average:
35 | 14 0.02
Rain
Actual:
55 | 30 T
Average:
35 | 14 0.02
Partly Cloudy
Actual:
49 | 26 T
Average:
35 | 14 0.02
Scattered Clouds
Actual:
55 | 24 0.00
Average:
35 | 13 0.02
Clear
Actual:
61 | 35 0.00
Average:
34 | 13 0.02
Clear
Actual:
63 | 35 0.00
Average:
34 | 13 0.02
Clear
Actual:
58 | 40 0.00
Average:
34 | 13 0.02
Clear
Actual:
57 | 36 0.00
Average:
34 | 13 0.02
Snow
Actual:
52 | 32 T
Average:
34 | 12 0.02
Snow
Actual:
32 | 25 0.06
Average:
34 | 12 0.02
Fog
Actual:
25 | 16 0.00
Average:
34 | 12 0.02
Scattered Clouds
Actual:
29 | 7 0.00
Average:
34 | 12 0.02
Snow
Actual:
38 | 20 0.01
Average:
33 | 12 0.02
Partly Cloudy
Actual:
43 | 17 0.00
Average:
33 | 12 0.03
Partly Cloudy
Actual:
42 | 28 T
Average:
33 | 12 0.02
Partly Cloudy
Actual:
43 | 29 0.00
Average:
33 | 12 0.02
Rain
Actual:
47 | 37 T
Average:
33 | 12 0.02
Overcast
Actual:
38 | 31 0.00
Average:
33 | 12 0.02
Scattered Clouds
Actual:
41 | 23 0.00
Average:
33 | 12 0.02
Snow
Actual:
45 | 28 0.21
Average:
33 | 12 0.03
Snow
Actual:
28 | 6 0.01
Average:
33 | 12 0.02
Snow
Actual:
22 | 2 T
Average:
33 | 12 0.02
Partly Cloudy
Actual:
29 | 3 0.00
Average:
33 | 12 0.02
Snow
Actual:
27 | 9 0.31
Average:
33 | 12 0.02
Snow
Actual:
9 | -8 0.02
Average:
33 | 12 0.02
Scattered Clouds
Actual:
20 | -21 0.00
Average:
33 | 12 0.03
Partly Cloudy
Actual:
29 | 12 0.00
Average:
33 | 12 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

2014 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 20 2 22 8 -5 79 54 28 30.30 30.05 29.89 10 10 10 26 11 31 0.00  
2 31 20 8 14 7 2 73 53 32 30.23 30.09 29.94 10 10 10 24 11 36 0.00  
3 37 23 9 16 9 3 73 58 43 30.17 30.01 29.91 10 10 10 12 6 12 0.00  
4 44 32 20 37 29 12 92 76 60 30.02 29.88 29.82 10 10 10 9 4 - 0.02 Rain
5 41 35 28 33 28 23 92 85 78 30.27 30.17 30.03 10 10 10 12 4 13 0.00  
6 55 43 30 35 30 25 85 63 41 30.21 30.10 30.00 10 10 10 23 12 30 T Rain
7 49 38 26 32 27 20 82 62 42 30.28 30.19 30.00 10 10 10 29 10 39 T  
8 55 40 24 28 23 17 75 57 38 30.30 30.22 30.13 10 10 10 18 10 23 0.00  
9 61 48 35 31 29 26 64 49 33 30.09 30.01 29.92 10 10 10 23 14 29 0.00  
10 63 49 35 33 30 26 70 50 30 30.04 29.92 29.77 10 10 10 22 7 29 0.00  
11 58 49 40 33 26 21 55 41 27 29.79 29.69 29.64 10 10 10 23 9 29 0.00  
12 57 47 36 30 28 25 64 48 32 29.77 29.72 29.64 10 10 10 31 7 36 0.00  
13 52 42 32 32 29 25 89 65 41 30.01 29.87 29.70 10 9 2 20 9 24 T Snow
14 32 29 25 29 26 21 92 85 78 30.30 30.14 30.00 10 4 1 18 12 25 0.06 Snow
15 25 21 16 21 19 13 96 90 84 30.34 30.23 30.10 10 7 0 14 5 16 0.00 Fog
16 29 18 7 20 13 3 92 81 69 30.24 30.15 30.06 10 10 10 12 4 13 0.00  
17 38 29 20 31 24 17 92 81 69 30.05 29.97 29.90 10 8 2 9 2 13 0.01 Snow
18 43 30 17 28 22 13 92 71 49 30.03 29.99 29.95 10 10 10 17 9 21 0.00  
19 42 35 28 30 25 20 70 62 53 29.97 29.91 29.82 10 10 10 21 10 23 T  
20 43 36 29 27 23 17 69 57 44 29.94 29.83 29.58 10 10 10 23 13 28 0.00  
21 47 42 37 31 27 22 76 63 49 29.71 29.49 29.36 10 10 10 32 21 43 T Rain
22 38 35 31 26 23 22 75 64 52 30.21 29.93 29.71 10 10 10 22 10 30 0.00  
23 41 32 23 25 20 15 78 59 40 30.32 30.17 29.84 10 10 10 20 9 24 0.00  
24 45 37 28 33 29 26 92 72 51 29.81 29.55 29.46 10 5 0 28 12 35 0.21 Fog , Rain , Snow
25 28 17 6 25 19 3 92 86 80 30.12 29.85 29.58 10 9 2 18 8 22 0.01 Snow
26 22 12 2 18 12 -2 91 82 73 30.29 30.14 30.02 10 7 1 14 7 17 T Snow
27 29 16 3 19 12 0 87 74 61 30.20 30.10 29.92 10 10 10 17 9 23 0.00  
28 27 18 9 23 16 5 92 80 68 30.51 30.03 29.78 9 2 0 17 7 21 0.31 Fog , Snow
29 9 1 -8 5 -3 -13 87 83 78 31.01 30.61 30.33 10 3 1 16 10 21 0.02 Snow
30 20 0 -21 1 -14 -25 89 69 48 31.07 30.80 30.46 10 10 10 17 7 18 0.00  
31 29 21 12 17 10 4 74 60 45 30.51 30.35 30.12 10 10 10 18 9 20 0.00