Weather History for Pittsburgh Allegheny Co., PA

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 66 °F 45 °F 28 °F
Mean Temperature 56 °F 39 °F 26 °F
Min Temperature 53 °F 33 °F 19 °F
Degree Days  
Heating Degree Days (base 65) 38 26 8 805
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 1 0 16
Dew Point  
Dew Point 54 °F 33 °F 17 °F
Precipitation  
Precipitation 0.98 in 0.14 in 0.00 in 4.20 in
Snowdepth - - - -
Wind  
Wind 23 mph 8 mph 0 mph
Gust Wind 37 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.46 in 29.99 in 29.35 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 30, 2012 Rise Set
Actual Time 7:42 AM EST 5:02 PM EST
Civil Twilight 7:11 AM EST 5:33 PM EST
Nautical Twilight 6:37 AM EST 6:07 PM EST
Astronomical Twilight 6:04 AM EST 6:40 PM EST
Moon 7:32 PM EST (12/30) 8:50 AM EST (12/30)
Length of Visible Light 10h 21m
Length of Day
9h 20m
Waning Gibbous, 95% of the Moon is Illuminated
Dec 30
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Weather History Calendar

Precipitation Actual month total 4.20 Average Month Total: 2.59
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
57 | 37 0.00
Average:
47 | 29 0.05
Rain
Actual:
59 | 45 0.05
Average:
43 | 29 0.09
Rain
Actual:
60 | 53 0.03
Average:
47 | 29 0.15
Rain
Actual:
66 | 46 0.29
Average:
48 | 31 0.12
Partly Cloudy
Actual:
45 | 30 0.00
Average:
41 | 28 0.08
Scattered Clouds
Actual:
46 | 26 0.00
Average:
38 | 27 0.06
Rain
Actual:
51 | 39 0.98
Average:
42 | 28 0.10
Rain
Actual:
55 | 44 0.14
Average:
42 | 29 0.17
Rain
Actual:
55 | 39 0.11
Average:
43 | 29 0.14
Snow
Actual:
57 | 35 0.70
Average:
45 | 26 0.09
Snow
Actual:
37 | 32 0.02
Average:
43 | 26 0.11
Scattered Clouds
Actual:
39 | 27 0.00
Average:
40 | 24 0.10
Clear
Actual:
43 | 25 0.00
Average:
42 | 24 0.04
Clear
Actual:
48 | 28 0.00
Average:
44 | 28 0.08
Rain
Actual:
51 | 33 0.01
Average:
45 | 22 0.05
Rain
Actual:
57 | 48 0.02
Average:
45 | 24 0.08
Rain
Actual:
54 | 46 0.74
Average:
39 | 27 0.07
Rain
Actual:
46 | 35 0.10
Average:
45 | 26 0.08
Rain
Actual:
44 | 35 0.01
Average:
42 | 26 0.03
Rain
Actual:
46 | 36 0.80
Average:
47 | 25 0.07
Snow
Actual:
42 | 28 0.02
Average:
46 | 24 0.14
Snow
Actual:
30 | 27 0.01
Average:
42 | 27 0.11
Clear
Actual:
37 | 21 0.00
Average:
43 | 25 0.04
Rain
Actual:
39 | 26 0.05
Average:
42 | 24 0.08
Rain
Actual:
35 | 32 0.00
Average:
35 | 21 0.10
Snow
Actual:
32 | 26 0.00
Average:
34 | 17 0.05
Snow
Actual:
30 | 28 0.01
Average:
36 | 17 0.05
Partly Cloudy
Actual:
30 | 26 0.11
Average:
33 | 21 0.07
Snow
Actual:
30 | 28 0.00
Average:
35 | 20 0.05
Snow
Actual:
28 | 25 0.00
Average:
36 | 23 0.08
Snow
Actual:
34 | 19 0.00
Average:
35 | 22 0.06
 

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 57 47 37 37 33 28 70 56 42 30.34 30.29 30.24 10 10 9 12 8 17 0.00  
2 59 52 45 52 45 36 94 76 51 30.23 30.13 30.05 10 8 4 18 10 25 0.05 Rain
3 60 56 53 54 53 52 100 90 78 30.24 30.19 30.14 10 5 0 10 6 - 0.03 Fog , Rain
4 66 56 46 54 50 43 89 76 56 30.17 30.08 29.98 10 9 3 23 12 31 0.29 Rain
5 45 39 30 41 29 19 86 69 55 30.38 30.26 30.13 10 10 9 13 8 24 0.00  
6 46 36 26 27 21 19 75 56 37 30.36 30.22 30.06 10 10 10 8 3 - 0.00  
7 51 45 39 49 44 27 96 90 56 30.05 29.96 29.87 10 2 0 9 5 - 0.98 Fog , Rain
8 55 50 44 50 48 38 94 87 74 30.09 29.89 29.83 10 6 0 12 7 16 0.14 Fog , Rain
9 55 47 39 54 41 33 94 83 71 30.13 30.00 29.77 10 9 5 14 8 20 0.11 Rain
10 57 46 35 54 46 32 94 88 83 29.81 29.66 29.55 10 7 1 20 10 28 0.70 Rain , Snow
11 37 35 32 32 29 27 89 79 67 30.25 30.02 29.79 10 9 3 10 7 - 0.02 Snow
12 39 33 27 25 22 20 85 67 46 30.46 30.38 30.26 10 10 10 8 5 - 0.00  
13 43 34 25 23 21 18 88 64 37 30.46 30.40 30.31 10 9 5 7 2 - 0.00  
14 48 38 28 26 23 21 78 57 37 30.33 30.28 30.24 10 10 7 12 8 - 0.00  
15 51 42 33 30 26 23 75 52 35 30.24 30.11 29.92 10 10 7 12 5 - 0.01 Rain
16 57 52 48 50 45 30 83 71 50 29.89 29.79 29.71 10 10 4 12 9 - 0.02 Rain
17 54 50 46 52 49 45 100 93 82 29.77 29.64 29.51 10 7 1 9 6 - 0.74 Rain
18 46 40 35 45 37 30 100 87 68 29.86 29.66 29.49 10 9 3 15 9 24 0.10 Rain
19 44 40 35 37 35 32 93 82 71 30.18 29.96 29.76 10 10 6 9 6 - 0.01 Rain
20 46 41 36 43 37 32 93 84 58 30.15 29.70 29.36 10 7 2 21 11 30 0.80 Rain
21 42 35 28 37 27 24 93 82 67 29.71 29.46 29.35 10 5 1 22 16 37 0.02 Rain , Snow
22 30 28 27 27 22 19 93 74 64 30.12 29.92 29.67 10 8 1 20 15 34 0.01 Snow
23 37 29 21 24 21 18 89 71 52 30.09 30.00 29.88 10 10 10 14 9 - 0.00  
24 39 32 26 36 30 21 100 87 65 30.03 29.87 29.75 10 6 0 14 5 22 0.05 Fog , Rain
25 35 34 32 34 31 24 100 88 67 30.23 30.09 29.90 10 6 2 13 8 18 0.00 Rain
26 32 29 26 28 26 24 100 88 76 30.17 29.79 29.56 10 5 0 18 9 28 0.00 Fog , Rain , Snow
27 30 29 28 28 26 23 100 90 75 30.13 29.86 29.58 10 6 2 14 7 24 0.01 Rain , Snow
28 30 28 26 23 21 20 80 74 69 30.18 30.09 29.92 10 10 10 7 4 - 0.11  
29 30 29 28 30 28 22 100 92 78 29.96 29.72 29.61 10 3 0 14 5 22 0.00 Fog , Snow
30 28 26 25 26 22 18 89 81 75 30.39 30.21 29.93 10 8 2 20 13 29 0.00 Snow
31 34 26 19 29 24 17 93 85 56 30.34 30.12 29.99 10 6 1 17 10 24 0.00 Snow