September 1997 Climate Data for Pittsburgh, PA  
See Key below for explanation of abbreviations 
DATE  SEP 97  |DP|HEATING DD|COOLING DD|PRECIPITATION
   HI LO AV NR|DY|DY MON SEA|DY MON SEA| DAY  MON NORM   DEP  YEAR  NORM   DEP
01*82 59 71 68 +3  0   0  23  6   6 491    0    0  .10  -.10 23.42 25.85 -2.43
02*85 59 72 68 +4  0   0  23  7  13 498  .03  .03  .20  -.17 23.45 25.95 -2.50
03*68 50 59 68 -9  6   6  29  0  13 498    T  .03  .30  -.27 23.45 26.05 -2.60
04*68 42 55 67-12 10  16  39  0  13 498    0  .03  .40  -.37 23.45 26.15 -2.70
05*73 44 59 67 -8  6  22  45  0  13 498    0  .03  .50  -.47 23.45 26.25 -2.80
06*75 56 66 67 -1  0  22  45  1  14 499  .01  .04  .61  -.57 23.46 26.36 -2.90
07*78 57 68 67 +1  0  22  45  3  17 502    T  .04  .72  -.68 23.46 26.47 -3.01
08*75 59 67 66 +1  0  22  45  2  19 504    0  .04  .83  -.79 23.46 26.58 -3.12
09*78 57 68 66 +2  0  22  45  3  22 507  .47  .51  .93  -.42 23.93 26.68 -2.75
10*69 63 66 66  0  0  22  45  1  23 508  .77 1.28 1.03  +.25 24.70 26.78 -2.08
11*71 60 66 66  0  0  22  45  1  24 509  .06 1.34 1.13  +.21 24.76 26.88 -2.12
12*71 59 65 65  0  0  22  45  0  24 509  .01 1.35 1.23  +.12 24.77 26.98 -2.21
13*70 57 64 65 -1  1  23  46  0  24 509    0 1.35 1.33  +.02 24.77 27.08 -2.31
14*73 56 65 65  0  0  23  46  0  24 509    0 1.35 1.43  -.08 24.77 27.18 -2.41
15*72 55 64 64  0  1  24  47  0  24 509    0 1.35 1.53  -.18 24.77 27.28 -2.51
16*79 53 66 64 +2  0  24  47  1  25 510    0 1.35 1.63  -.28 24.77 27.38 -2.61
   HI LO AV NR|DY|DY MON SEA|DY MON SEA| DAY  MON NORM   DEP  YEAR  NORM   DEP
......................................................
............
............
............   NORMALS 1961-90 RV
DATE  SEP 97  |DP|HEATING DD|COOLING DD|PRECIPITATION
   HI LO AV NR|DY|DY MON SEA|DY MON SEA| DAY  MON NORM   DEP  YEAR  NORM   DEP
17*77 57 67 64 +3  0  24  47  2  27 512  .07 1.42 1.73  -.31 24.84 27.48 -2.64
18*75 56 66 63 +3  0  24  47  1  28 513    0 1.42 1.83  -.41 24.84 27.58 -2.74
19*80 51 66 63 +3  0  24  47  1  29 514  .01 1.43 1.93  -.50 24.85 27.68 -2.83
20*73 52 63 63  0  2  26  49  0  29 514  .44 1.87 2.03  -.16 25.29 27.78 -2.49
21*61 46 54 62 -8 11  37  60  0  29 514    0 1.87 2.13  -.26 25.29 27.88 -2.59
22*68 40 54 62 -8 11  48  71  0  29 514    0 1.87 2.23  -.36 25.29 27.98 -2.69
23*61 51 56 62 -6  9  57  80  0  29 514  .06 1.93 2.33  -.40 25.35 28.08 -2.73
24*62 43 53 61 -8 12  69  92  0  29 514    0 1.93 2.43  -.50 25.35 28.18 -2.83
25*69 40 55 61 -6 10  79 102  0  29 514  .10 2.03 2.52  -.49 25.45 28.27 -2.82
26*64 48 56 60 -4  9  88 111  0  29 514    0 2.03 2.61  -.58 25.45 28.36 -2.91
27*74 42 58 60 -2  7  95 118  0  29 514    0 2.03 2.70  -.67 25.45 28.45 -3.00
28*69 51 60 59 +1  5 100 123  0  29 514  .77 2.80 2.79  +.01 26.22 28.54 -2.32
29*70 51 61 59 +2  4 104 127  0  29 514  .05 2.85 2.88  -.03 26.27 28.63 -2.36
30*65 54 60 59 +1  5 109 132  0  29 514  .07 2.92 2.97  -.05 26.34 28.72 -2.38

 



...PITTSBURGH SETS RECORD COLD MEAN IN ADDITION TO RECORD LOW...

SEPTEMBER 4TH 1997 AT PITTSBURGH INTERNATIONAL AIRPORT...

HIGH 68
LOW  42
MEAN 55

THE LOW OF 42 IS A NEW RECORD LOW FOR THE DATE...BREAKING 48 DEGREES IN
1946.  THE MEAN OF 55 IS A NEW RECORD COLD MEAN FOR THE DATE...BREAKING
60 DEGREES IN 1974.

ANOTHER RECORD LOW COULD BE SET FRIDAY MORNING.  TONIGHT'S LOW
TEMPERATURE WILL APPROACH THE RECORD LOW FOR SEPTEMBER 5TH...43 DEGREES
SET IN 1972.



                           SEP 1997
TEMPERATURES......
AVERAGE MAXIMUM................................. 71.8 DEGREES
AVERAGE MINIMUM................................. 52.3 DEGREES
AVERAGE FOR MONTH............................... 62.1 DEGREES
DEPARTURE FROM NORMAL........................... -1.8 DEGREES
HIGHEST AND DATE........................85 DEGREES ON THE 2ND
LOWEST AND DATE...................40 DEGREES ON THE 22ND&25TH
NUMBER OF DAYS MAX TEMPERATURE 90 DEGREES OR ABOVE........  0
NUMBER OF DAYS MAX TEMPERATURE 32 DEGREES OR BELOW........  0
NUMBER OF DAYS MIN TEMPERATURE 32 DEGREES OR BELOW........  0
 
HEATING DEGREE DAYS.....................................  109
DEPARTURE FROM NORMAL...................................   +9
SEASONAL TOTAL HEATING..................................  132
COOLING DEGREE DAYS.....................................   29
DEPARTURE FROM NORMAL...................................  -38
SEASONAL TOTAL COOLING..................................  514
 
PRECIPITATION DATA
TOTAL FOR THE MONTH............................  2.92 INCHES
DEPARTURE FROM NORMAL.......................... -0.05 INCHES
TOTAL FOR THE YEAR............................. 26.34 INCHES
DEPARTURE FROM NORMAL.......................... -2.38 INCHES
MAXIMUM PRECIPITATION IN 24 HOURS.. 1.21 INCHES ON  9TH-10TH
MONTHLY SNOWFALL...............................  0.0  INCHES
DEPARTURE FROM NORMAL..........................  0.0  INCHES
MAXIMUM CALENDER DAY SNOWFALL..................  0.0  INCHES
 
NUMBER OF DAYS WITH PRECIPITATION 0.01 INCH OR MORE...... 17
NUMBER OF DAYS WITH PRECIPITATION 0.10 INCH OR MORE......  4
NUMBER OF DAYS WITH PRECIPITATION 0.50 INCH OR MORE......  2
NUMBER OF DAYS WITH PRECIPITATION 1.00 INCH OR MORE......  0
 
SUNSHINE DATA NOT AVAILABLE
 
ANOTHER COOL MONTH...5 OF THE LAST 6 MONTHS AVERAGED BELOW NORMAL.
RECORD LOW OF 42 AND RECORD COLD MEAN OF 55 ON THE 4TH.

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