Weather History for Pittsburgh, PA

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 61 °F 44 °F 33 °F
Mean Temperature 55 °F 38 °F 27 °F
Min Temperature 48 °F 31 °F 16 °F
Degree Days  
Heating Degree Days (base 65) 38 27 10 842
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 4 0 0 5
Dew Point  
Dew Point 52 °F 29 °F 6 °F
Precipitation  
Precipitation 0.72 in 0.11 in 0.00 in 2.47 in
Snowdepth 1.0 in 0.0 in 0.0 in -
Wind  
Wind 31 mph 6 mph 0 mph
Gust Wind 40 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.68 in 30.17 in 29.34 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 17, 2011 Rise Set
Actual Time 7:38 AM EST 4:55 PM EST
Civil Twilight 7:07 AM EST 5:26 PM EST
Nautical Twilight 6:33 AM EST 6:00 PM EST
Astronomical Twilight 5:59 AM EST 6:33 PM EST
Moon No Moon Rise 11:51 AM EST (12/17)
Length of Visible Light 10h 19m
Length of Day
9h 17m
Waning Gibbous, 54% of the Moon is Illuminated
Dec 17
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter
Jan 9
Full

Weather History Calendar

Precipitation Actual month total 2.47 Normal Month Total: 2.85
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Fog
Actual:
40 | 25 0.00
Average:
44 | 30 0.09
Partly Cloudy
Actual:
43 | 25 0.00
Average:
44 | 30 0.10
Partly Cloudy
Actual:
49 | 25 0.00
Average:
44 | 29 0.10
Partly Cloudy
Actual:
60 | 35 0.00
Average:
43 | 29 0.09
Rain
Actual:
61 | 48 0.16
Average:
43 | 29 0.10
Rain
Actual:
52 | 39 0.05
Average:
42 | 28 0.10
Snow
Actual:
40 | 30 0.09
Average:
42 | 28 0.10
Partly Cloudy
Actual:
35 | 28 0.00
Average:
42 | 28 0.10
Snow
Actual:
43 | 28 T
Average:
41 | 27 0.10
Snow
Actual:
34 | 21 T
Average:
41 | 27 0.10
Clear
Actual:
37 | 16 0.00
Average:
41 | 27 0.10
Partly Cloudy
Actual:
44 | 17 0.00
Average:
40 | 26 0.09
Partly Cloudy
Actual:
46 | 21 T
Average:
40 | 26 0.09
Rain
Actual:
48 | 37 0.03
Average:
40 | 26 0.10
Rain
Actual:
58 | 41 0.14
Average:
39 | 25 0.08
Overcast
Actual:
41 | 33 0.00
Average:
39 | 25 0.09
Snow
Actual:
33 | 29 0.09
Average:
39 | 25 0.08
Snow
Actual:
36 | 28 0.01
Average:
38 | 24 0.09
Partly Cloudy
Actual:
45 | 30 T
Average:
38 | 24 0.08
Snow
Actual:
45 | 36 0.30
Average:
38 | 24 0.09
Thunderstorm
Actual:
60 | 42 0.37
Average:
38 | 24 0.08
Rain
Actual:
49 | 40 0.39
Average:
38 | 24 0.10
Snow
Actual:
40 | 31 0.03
Average:
37 | 23 0.09
Snow
Actual:
38 | 29 T
Average:
37 | 23 0.09
Snow
Actual:
46 | 29 T
Average:
37 | 23 0.09
Partly Cloudy
Actual:
41 | 32 T
Average:
37 | 23 0.09
Snow
Actual:
42 | 33 0.72
Average:
37 | 23 0.09
Snow
Actual:
35 | 22 T
Average:
37 | 22 0.09
Snow
Actual:
41 | 19 0.01
Average:
36 | 22 0.09
Rain
Actual:
51 | 39 0.07
Average:
36 | 22 0.08
Rain
Actual:
44 | 39 0.01
Average:
36 | 22 0.09
 

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 40 33 25 28 26 23 92 76 59 30.40 30.33 30.23 10 7 0 10 2 14 0.00 Fog
2 43 34 25 30 26 21 92 77 62 30.59 30.43 30.27 10 9 7 15 3 21 0.00  
3 49 37 25 31 27 21 92 69 46 30.59 30.51 30.37 10 8 4 9 3 12 0.00  
4 60 48 35 36 31 23 75 51 27 30.36 30.29 30.24 10 10 10 15 6 22 0.00  
5 61 55 48 50 42 29 89 65 41 30.24 30.15 30.01 10 9 4 9 4 - 0.16 Rain
6 52 46 39 49 39 37 93 90 86 30.09 30.03 29.96 10 6 0 14 8 16 0.05 Rain
7 40 35 30 38 32 20 92 81 69 30.04 29.93 29.82 10 6 2 22 10 29 0.09 Rain , Snow
8 35 32 28 26 22 21 85 73 61 30.31 30.23 30.05 10 10 10 16 7 18 0.00  
9 43 36 28 29 25 22 85 64 43 30.32 30.27 30.21 10 10 8 18 6 26 T Snow
10 34 28 21 27 15 7 72 54 36 30.57 30.45 30.27 10 10 9 16 7 20 T Snow
11 37 27 16 15 11 6 80 54 27 30.68 30.60 30.54 10 10 7 9 1 12 0.00  
12 44 31 17 20 16 12 80 55 29 30.55 30.50 30.43 10 10 7 8 1 10 0.00  
13 46 34 21 30 22 16 81 60 38 30.54 30.48 30.43 10 10 8 8 1 10 T  
14 48 43 37 43 36 27 92 76 59 30.41 30.28 30.09 10 8 6 9 3 13 0.03 Rain
15 58 50 41 52 47 29 86 72 57 30.06 29.88 29.76 10 8 2 30 16 40 0.14 Rain
16 41 37 33 29 24 21 69 63 56 30.31 30.24 30.06 10 10 10 29 8 33 0.00  
17 33 31 29 27 24 20 85 72 59 30.29 30.23 30.16 10 6 2 15 7 17 0.09 Snow
18 36 32 28 26 24 22 92 74 56 30.29 30.24 30.15 10 8 2 17 5 21 0.01 Snow
19 45 38 30 36 29 23 72 63 53 30.19 30.10 30.01 10 10 8 21 10 30 T  
20 45 41 36 41 38 34 100 85 70 30.19 30.10 30.00 10 5 0 14 4 17 0.30 Rain , Snow
21 60 51 42 52 46 38 96 84 71 29.99 29.82 29.63 10 8 2 30 7 38 0.37 Rain , Thunderstorm
22 49 45 40 41 40 37 96 81 66 30.14 30.03 29.95 10 8 4 18 6 24 0.39 Rain
23 40 36 31 36 31 26 85 82 78 30.32 30.19 29.95 10 9 4 17 8 21 0.03 Rain , Snow
24 38 34 29 27 24 20 85 72 59 30.47 30.39 30.33 10 10 9 17 4 21 T Snow
25 46 38 29 27 25 23 78 58 38 30.32 30.17 30.02 10 10 10 29 12 36 T Snow
26 41 37 32 27 25 23 78 64 50 30.41 30.27 30.06 10 10 10 20 7 24 T  
27 42 38 33 39 33 25 100 82 64 30.03 29.60 29.34 10 6 0 23 7 30 0.72 Rain , Snow
28 35 29 22 31 19 12 82 65 47 30.07 29.89 29.62 10 9 4 31 15 38 T Snow
29 41 30 19 29 23 15 85 72 59 30.04 29.92 29.76 10 9 2 12 5 18 0.01 Snow
30 51 45 39 41 34 26 64 59 53 29.94 29.83 29.72 10 10 5 21 8 26 0.07 Rain
31 44 42 39 39 37 34 89 83 76 30.14 29.95 29.76 10 10 6 14 7 20 0.01 Rain