May 1998 Climate Data for Pittsburgh, PA  
See Key below for explanation of abbreviations
DATE  TEMPS   |DP|HEATING DD|COOLING DD |PRECIPITATION
   HI LO AV NR|DY|DY MON SEAS|DY MON SEA| DAY  MON NORM  DEP  YEAR  NORM   DEP
01*60 55 58 55 +3  7   7 5009  0   0  22  .49  .49  .11 +.38 13.59 11.60 +1.99
02*57 53 55 55  0 10  17 5019  0   0  22  .23  .72  .22 +.50 13.82 11.71 +2.11
03*67 54 61 55 +6  4  21 5023  0   0  22  .10  .82  .33 +.49 13.92 11.82 +2.10
04*70 53 62 56 +6  3  24 5026  0   0  22  .15  .97  .44 +.53 14.07 11.93 +2.14
05*63 53 58 56 +2  7  31 5033  0   0  22    T  .97  .55 +.42 14.07 12.04 +2.03
06*74 49 62 57 +5  3  34 5036  0   0  22    0  .97  .66 +.31 14.07 12.15 +1.92
07*74 52 63 57 +6  2  36 5038  0   0  22  .27 1.24  .77 +.47 14.34 12.26 +2.08
08*66 58 62 57 +5  3  39 5041  0   0  22  .06 1.30  .88 +.42 14.40 12.37 +2.03
09*72 58 65 57 +8  0  39 5041  0   0  22    T 1.30  .99 +.31 14.40 12.48 +1.92
10*68 58 63 58 +5  2  41 5043  0   0  22  .03 1.33 1.10 +.23 14.43 12.59 +1.84
11*60 54 57 58 -1  8  49 5051  0   0  22  .08 1.41 1.21 +.20 14.51 12.70 +1.81
12*64 53 59 58 +1  6  55 5057  0   0  22    T 1.41 1.32 +.09 14.51 12.81 +1.70
13*76 47 62 59 +3  3  58 5060  0   0  22    0 1.41 1.43 -.02 14.51 12.92 +1.59
14*83 54 69 59+10  0  58 5060  4   4  26    0 1.41 1.55 -.14 14.51 13.04 +1.47
15*86 56 71 59+12  0  58 5060  6  10  32    0 1.41 1.67 -.26 14.51 13.16 +1.35
16*83 58 71 60+11  0  58 5060  6  16  38    0 1.41 1.79 -.38 14.51 13.28 +1.23
........
..............................................................................
..........................PITTSBURGH AIRPORT MAY 98...........................
                         MAY 98  (NORMALS 1961-90 RV)
DATE  TEMPS   |DP|HEATING DD |COOLING DD |PRECIPITATION
   HI LO AV NR|DY|DY MON SEAS|DY MON SEAS|DAY   MON NORM  DEP  YEAR  NORM   DEP
17*81 56 69 60 +9  0  58 5060  4  20   42   0  1.41 1.91 -.50 14.51 13.40 +1.11
18*85 50 68 60 +8  0  58 5060  3  23   45   0  1.41 2.03 -.62 14.51 13.52  +.99
19*86 60 73 60+13  0  58 5060  8  31   53 .15  1.56 2.15 -.59 14.66 13.64 +1.02
20*83 63 73 61+12  0  58 5060  8  39   61   0  1.56 2.27 -.71 14.66 13.76  +.90
21*73 54 64 61 +3  1  59 5061  0  39   61   0  1.56 2.39 -.83 14.66 13.88  +.78
22*67 46 57 61 -4  8  67 5069  0  39   61   0  1.56 2.51 -.95 14.66 14.00  +.66
23*72 52 62 62  0  3  70 5072  0  39   61   0  1.56 2.63-1.07 14.66 14.12  +.54
24*71 48 60 62 -2  5  75 5077  0  39   61 .05  1.61 2.75-1.14 14.71 14.24  +.47
25*73 56 65 62  3  0  75 5077  0  39   61   T  1.61 2.87-1.26 14.71 14.36  +.35
26*72 52 62 63 -1  3  78 5080  0  39   61   0  1.61 2.99-1.38 14.71 14.48  +.23
27*80 51 66 63 +3  0  78 5080  1  40   62   0  1.61 3.11-1.50 14.71 14.60  +.11
28*81 51 66 63 +3  0  78 5080  1  41   63   0  1.61 3.23-1.62 14.71 14.72  -.01
29*87 64 76 63+13  0  78 5080 11  52   74 .19  1.80 3.35-1.55 14.90 14.84  +.06
30*83 62 73 64 +9  0  78 5080  8  60   82   T  1.80 3.47-1.67 14.90 14.96  -.06
31*85 59 72 64 +8  0  78 5080  7  67   89 .59  2.39 3.59-1.20 15.49 15.08  +.41
 

 


                           MAY 1998
TEMPERATURES......
AVERAGE MAXIMUM................................. 74.3 DEGREES
AVERAGE MINIMUM................................. 54.6 DEGREES
AVERAGE FOR MONTH............................... 64.5 DEGREES
DEPARTURE FROM NORMAL........................... +5.0 DEGREES
HIGHEST AND DATE.............................. 87 ON THE 29TH
LOWEST AND DATE............................... 46 ON THE 22ND
NUMBER OF DAYS MAX TEMPERATURE 32 DEGREES OR BELOW......... 0
NUMBER OF DAYS MIN TEMPERATURE 32 DEGREES OR BELOW......... 0
NUMBER OF DAYS MAX TEMPERATURE 90 DEGREES OR ABOVE......... 0
 
HEATING DEGREE DAYS.....................................   78
DEPARTURE FROM NORMAL................................... -136
SEASONAL TOTAL HEATING (JUL 1 - JUN 30)................. 5080
COOLING DEGREE DAYS ....................................   67
DEPARTURE FROM NORMAL...................................  +23
SEASONAL TOTAL COOLING (JAN 1 - DEC 31).................   89
 
PRECIPITATION DATA
TOTAL FOR THE MONTH.............................  2.39 INCHES
DEPARTURE FROM NORMAL........................... -1.20 INCHES
TOTAL FOR THE YEAR.............................. 15.49 INCHES
DEPARTURE FROM NORMAL........................... +0.41 INCHES
MAXIMUM PRECIPITATION IN 24 HOURS........ 0.70 ON 1ST AND 2ND
MONTHLY SNOWFALL................................   0.0 INCHES
DEPARTURE FROM NORMAL...........................  -0.2 INCHES
MAXIMUM CALENDER DAY SNOWFALL...................   0.0 INCHES
 
NUMBER OF DAYS WITH PRECIPITATION 0.01 INCH OR MORE....... 12
NUMBER OF DAYS WITH PRECIPITATION 0.10 INCH OR MORE.......  8
NUMBER OF DAYS WITH PRECIPITATION 0.50 INCH OR MORE.......  1
NUMBER OF DAYS WITH PRECIPITATION 1.00 INCH OR MORE.......  0
 
NUMBER OF CLEAR DAYS...........  5
NUMBER OF PARTLY CLOUDY DAYS... 10
NUMBER OF MAINLY CLOUDY DAYS... 16
 
HIGHEST SEA LEVEL PRESSURE......... 30.19 ON THE 18TH AT 0828
LOWEST SEA LEVEL PRESSURE.......... 29.50 ON THE  8TH AT 0533
 
...RECORDS AND HIGHLIGHTS...
MAY 1998 TIED FOR THE 18TH WARMEST MAY ON RECORD AND IT WAS THE 6TH
CONSECUTIVE MONTH THAT AVERGED WARMER THAN NORMAL.
 

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