Weather History for Sidney-Richland, MT

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 51 °F 25 °F 6 °F
Mean Temperature 38 °F 15 °F -5 °F
Min Temperature 28 °F 5 °F -16 °F
Degree Days  
Heating Degree Days (base 65) 70 50 27 1543
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 39 °F 12 °F -24 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 24 mph 6 mph 0 mph
Gust Wind 33 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.46 in 29.92 in 29.26 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 08, 2012 Rise Set
Actual Time 7:32 AM MST 4:04 PM MST
Civil Twilight 6:57 AM MST 4:40 PM MST
Nautical Twilight 6:18 AM MST 5:19 PM MST
Astronomical Twilight 5:40 AM MST 5:57 PM MST
Moon 1:41 AM MST (12/8) 12:52 PM MST (12/8)
Length of Visible Light 9h 43m
Length of Day
8h 31m
Waning Crescent, 27% of the Moon is Illuminated
Dec 8
Waning Crescent
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Weather History Calendar

Precipitation Actual month total 0.00 Average Month Total: 0.33
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
33 | 21 0.00
Average:
32 | 10 0.00
Partly Cloudy
Actual:
51 | 19 0.00
Average:
29 | 8 0.02
Scattered Clouds
Actual:
46 | 19 0.00
Average:
32 | 11 0.00
Scattered Clouds
Actual:
33 | 15 0.00
Average:
35 | 12 0.01
Scattered Clouds
Actual:
48 | 28 0.00
Average:
29 | 9 0.00
Scattered Clouds
Actual:
39 | 15 0.00
Average:
31 | 9 0.00
Mostly Cloudy
Actual:
28 | 15 0.00
Average:
30 | 9 0.02
Partly Cloudy
Actual:
26 | -2 0.00
Average:
29 | 8 0.00
Clear
Actual:
6 | -16 0.00
Average:
30 | 8 0.00
Partly Cloudy
Actual:
28 | 5 0.00
Average:
32 | 8 0.00
Mostly Cloudy
Actual:
35 | 17 0.00
Average:
31 | 9 0.00
Partly Cloudy
Actual:
33 | 17 0.00
Average:
31 | 11 0.02
Overcast
Actual:
33 | 17 0.00
Average:
26 | 8 0.00
Partly Cloudy
Actual:
28 | 10 0.00
Average:
29 | 7 0.01
Partly Cloudy
Actual:
24 | 10 0.00
Average:
30 | 7 0.00
Partly Cloudy
Actual:
24 | 12 0.00
Average:
29 | 8 0.02
Partly Cloudy
Actual:
26 | 1 0.00
Average:
29 | 8 0.01
Partly Cloudy
Actual:
33 | 12 0.00
Average:
28 | 6 0.01
Partly Cloudy
Actual:
17 | -5 0.00
Average:
25 | 4 0.00
Clear
Actual:
21 | -5 0.00
Average:
25 | 3 0.02
Clear
Actual:
30 | 3 0.00
Average:
24 | 5 0.00
Partly Cloudy
Actual:
10 | 1 0.00
Average:
22 | 4 0.03
Partly Cloudy
Actual:
10 | -9 0.00
Average:
24 | 1 0.02
Mostly Cloudy
Actual:
8 | -9 0.00
Average:
24 | 4 0.01
Partly Cloudy
Actual:
8 | -9 0.00
Average:
24 | 4 0.01
Partly Cloudy
Actual:
6 | -11 0.00
Average:
27 | 6 0.02
Partly Cloudy
Actual:
10 | -9 0.00
Average:
27 | 6 0.02
Partly Cloudy
Actual:
12 | -11 0.00
Average:
24 | 4 0.02
Partly Cloudy
Actual:
24 | 0 0.00
Average:
20 | 1 0.01
Partly Cloudy
Actual:
24 | 3 0.00
Average:
21 | 2 0.02
Overcast
Actual:
21 | 12 0.00
Average:
20 | 1 0.03
 

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 33 27 21 32 25 18 100 92 86 29.81 29.74 29.65 10 5 0 14 4 - 0.00  
2 51 35 19 39 29 18 100 82 54 29.73 29.50 29.26 10 9 2 24 5 32 0.00  
3 46 32 19 37 25 16 93 68 53 30.05 29.78 29.46 10 10 10 24 16 33 0.00  
4 33 24 15 25 19 12 93 78 64 30.20 30.09 29.94 10 10 10 12 5 - 0.00  
5 48 38 28 34 27 21 80 68 53 29.93 29.75 29.60 10 10 10 18 8 24 0.00  
6 39 28 15 25 20 12 93 71 42 30.01 29.96 29.89 10 10 10 14 9 22 0.00  
7 28 22 15 25 19 12 100 89 80 29.98 29.91 29.77 10 7 1 12 6 - 0.00  
8 26 12 -2 21 10 -8 93 84 72 30.33 29.93 29.70 10 5 0 21 12 25 0.00  
9 6 -5 -16 5 -7 -24 100 81 51 30.44 30.25 29.86 10 10 10 15 8 - 0.00  
10 28 16 5 25 17 1 100 79 69 29.84 29.76 29.68 10 10 10 23 12 29 0.00  
11 35 26 17 28 21 12 93 82 74 29.81 29.65 29.48 10 10 10 16 6 - 0.00  
12 33 25 17 30 21 14 100 89 80 29.93 29.71 29.52 10 9 4 12 5 - 0.00  
13 33 25 17 30 21 12 100 89 79 29.96 29.91 29.83 10 5 0 9 4 - 0.00  
14 28 19 10 28 19 9 100 94 85 29.82 29.73 29.67 10 5 0 9 6 - 0.00  
15 24 17 10 21 15 7 100 92 80 29.85 29.80 29.74 10 6 0 6 2 - 0.00  
16 24 18 12 21 14 9 100 91 85 29.78 29.71 29.65 10 7 0 5 1 - 0.00  
17 26 14 1 21 11 -8 100 87 66 29.65 29.51 29.41 10 10 5 5 1 - 0.00  
18 33 22 12 28 17 7 100 82 69 29.75 29.56 29.43 10 8 0 21 9 28 0.00  
19 17 6 -5 12 5 -9 100 83 72 30.09 29.98 29.76 10 8 2 18 9 22 0.00  
20 21 8 -5 12 3 -17 100 84 55 30.08 30.05 30.01 10 10 10 8 5 - 0.00  
21 30 16 3 21 11 -4 100 82 64 30.07 30.00 29.95 10 10 10 16 4 21 0.00  
22 10 6 1 7 2 -2 92 80 73 30.22 30.15 30.07 10 10 5 15 10 - 0.00  
23 10 0 -9 7 1 -17 100 82 71 30.15 30.09 30.05 10 8 1 12 5 - 0.00  
24 8 0 -9 3 -4 -18 100 82 65 30.42 30.27 30.14 10 8 0 8 2 - 0.00  
25 8 0 -9 7 -3 -15 100 83 66 30.46 30.37 30.24 10 7 1 7 2 - 0.00  
26 6 -2 -11 1 -7 -18 100 85 59 30.22 30.09 30.01 10 9 3 7 2 - 0.00  
27 10 0 -9 3 -3 -20 100 83 59 30.05 30.02 30.00 10 10 8 7 3 - 0.00  
28 12 0 -11 7 -4 -17 100 84 60 30.03 30.01 29.97 10 10 3 9 4 - 0.00  
29 24 12 0 18 12 -4 100 82 68 30.03 29.98 29.95 10 10 10 18 7 - 0.00  
30 24 14 3 21 14 0 100 83 73 30.13 30.04 29.95 10 10 2 18 5 18 0.00  
31 21 16 12 19 14 9 93 86 73 30.13 30.09 30.05 10 8 1 8 3 - 0.00