April 1997 Climate Data for Pittsburgh, PA  
See Key below for explanation of abbreviations   
DATE  APR 97  |DP|HEATING DD |SNOWFALL     |PRECIPITATION
   HI LO AV NR|DY|DY MON SEAS|DAY  MON SEAS| DAY  MON NORM  DEP YEAR  NORM  DEP
01*54 25 40 45 -5 25  25 4990   0    0 29.1    0    0  .11 -.11 5.95  8.45-2.50
02*63 28 46 45 +1 19  44 5009   0    0 29.1    0    0  .22 -.22 5.95  8.56-2.61
03*68 35 52 46 +6 13  57 5022   0    0 29.1    0    T  .33 -.33 5.95  8.67-2.72
04*74 51 63 46+17  2  59 5024   0    0 29.1    0    T  .44 -.44 5.95  8.78-2.83
05*71 57 64 46+18  1  60 5025   0    0 29.1    T    T  .55 -.55 5.95  8.89-2.94
06*73 60 67 47+20  0  60 5025   0    0 29.1    0    T  .66 -.66 5.95  9.00-3.05
07*60 36 48 47 +1 17  77 5042   0    0 29.1    0    T  .77 -.77 5.95  9.11-3.16
08*51 26 39 47 -8 26 103 5068 0.8  0.8 29.9  .02  .02  .88 -.86 5.97  9.22-3.25
09*33 21 27 48-21 38 141 5106   T  0.8 29.9    T  .02  .99 -.97 5.97  9.33-3.36
10*45 18 32 48-16 33 174 5139   0  0.8 29.9    0  .02 1.09-1.07 5.97  9.43-3.46
11*51 34 43 48 -5 22 196 5161   0  0.8 29.9    0  .02 1.19-1.17 5.97  9.53-3.56
12*57 40 49 48 +1 16 212 5177   0  0.8 29.9  .86  .88 1.29 -.41 6.83  9.63-2.80
13*51 31 41 49 -8 24 236 5201   T  0.8 29.9  .08  .96 1.39 -.43 6.91  9.73-2.82
14*51 28 40 49 -9 25 261 5226   0  0.8 29.9    0  .96 1.49 -.53 6.91  9.83-2.92
15*57 29 43 49 -6 22 283 5248   0  0.8 29.9    0  .96 1.59 -.63 6.91  9.93-3.02
16*63 33 48 50 -2 17 300 5265   0  0.8 29.9  .02  .98 1.69 -.71 6.93 10.03-3.10
..............


..............
.............. NORMALS 1961-90
DATE  APR 97  |DP|HEATING DD |SNOWFALL     |PRECIPITATION
   HI LO AV NR|DY|DY MON SEAS|DAY  MON SEAS| DAY  MON NORM  DEP YEAR  NORM  DEP
17*45 34 40 50-10 25 325 5290   0  0.8 29.9  .02 1.00 1.79 -.79 6.95 10.13-3.18
18*49 28 39 50-11 26 351 5316   T  0.8 29.9    T 1.00 1.89 -.89 6.95 10.23-3.28
19*55 26 41 51-10 24 375 5340   0  0.8 29.9    0 1.00 1.99 -.99 6.95 10.33-3.38
20*59 25 42 51 -9 23 398 5363   0  0.8 29.9    0 1.00 2.09-1.09 6.95 10.43-3.48
21*55 39 47 51 -4 18 416 5381   0  0.8 29.9    0 1.00 2.19-1.19 6.95 10.53-3.58
22*59 33 46 52 -6 19 435 5400   0  0.8 29.9    T 1.00 2.29-1.29 6.95 10.63-3.68
23*53 39 46 52 -6 19 454 5419   0  0.8 29.9  .01 1.01 2.39-1.38 6.96 10.73-3.77
24*58 44 51 52 -1 14 468 5433   0  0.8 29.9  .05 1.06 2.49-1.43 7.01 10.83-3.82
25*61 35 48 53 -5 17 485 5450   0  0.8 29.9    T 1.06 2.60-1.54 7.01 10.94-3.93
26*64 34 49 53 -4 16 501 5466   0  0.8 29.9    0 1.06 2.71-1.65 7.01 11.05-4.04
27*62 44 53 53  0 12 513 5478   0  0.8 29.9  .37 1.43 2.82-1.39 7.38 11.16-3.78
28*55 41 48 54 -6 17 530 5495   0  0.8 29.9  .14 1.57 2.93-1.36 7.52 11.27-3.75
29*66 32 49 54 -5 16 546 5511   0  0.8 29.9    0 1.57 3.04-1.47 7.52 11.38-3.86
30*76 38 57 54 +3  8 554 5519   0  0.8 29.9    0 1.57 3.15-1.58 7.52 11.49-3.97


Key 

HI = High for Day
LO = Low for Day
AV = Average
NR = Normal Average
DP DY = Daily Departure for Normal
HEATING DD = Heating Degree Day for
-----DY = Day
-----MON = Month
-----SEAS = Season
SNOWFALL for DAY...Month and Season
PRECIPITATION for
-----DY = DAY
-----MON = Month
-----NORM = Cumulative Normal for Month
-----DEP = Cumulitive Departure for Normal for Month
-----YEAR = Cumulitive Yearly Total
-----NORM = Cumulative Yearly Normal
-----DEP = Depature from the Yearly Normal