May 1997 Climate Data for Pittsburgh, PA
See Key below for explanation of abbreviations
DATE MAY 97 |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*73 45 59 55 +4 6 6 5525 0 0 2 T T .11 -.11 7.52 11.60 -4.08
02*63 36 50 55 -5 15 21 5540 0 0 2 .03 .03 .22 -.19 7.55 11.71 -4.16
03*68 42 55 55 0 10 31 5550 0 0 2 .43 .46 .33 +.13 7.98 11.82 -3.84
04*58 40 49 56 -7 16 47 5566 0 0 2 T .46 .44 +.02 7.98 11.93 -3.95
05*66 38 52 56 -4 13 60 5579 0 0 2 .06 .52 .55 -.03 8.04 12.04 -4.00
06*59 42 51 57 -6 14 74 5593 0 0 2 .14 .66 .66 0 8.18 12.15 -3.97
07*59 33 46 57-11 19 93 5612 0 0 2 0 .66 .77 -.11 8.18 12.26 -4.08
08*58 35 47 57-10 18 111 5630 0 0 2 .53 1.19 .88 +.31 8.71 12.37 -3.66
09*60 41 51 57 -6 14 125 5644 0 0 2 .12 1.31 .99 +.32 8.83 12.48 -3.65
10*48 39 44 58-14 21 146 5665 0 0 2 .10 1.41 1.10 +.31 8.93 12.59 -3.66
11*65 37 51 58 -7 14 160 5679 0 0 2 .00 1.41 1.21 +.20 8.93 12.70 -3.77
12*61 52 57 58 -1 8 168 5687 0 0 2 T 1.41 1.32 +.09 8.93 12.81 -3.88
13*63 46 55 59 -4 10 178 5697 0 0 2 .00 1.41 1.43 -.02 8.93 12.92 -3.99
14*61 43 52 59 -7 13 191 5710 0 0 2 .13 1.54 1.55 -.01 9.06 13.04 -3.98
15*57 42 50 59 -9 15 206 5725 0 0 2 T 1.54 1.67 -.13 9.06 13.16 -4.10
16*57 41 49 60-11 16 222 5741 0 0 2 .01 1.55 1.79 -.24 9.07 13.28 -4.21
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NORMALS 1961-90
DATE MAY 97 |DP|HEATING DD |COOLING DD|PRECIPITATION
HI LO AV NR|DY|DY MON SEAS|DY MON SEA| DAY MON NORM DEP YEAR NORM DEP
17*67 46 57 60 -3 8 230 5749 0 0 2 .07 1.62 1.91 -.29 9.14 13.40 -4.26
18*82 45 64 60 +4 1 231 5750 0 0 2 1.05 2.67 2.03 +.64 10.19 13.52 -3.33
19*82 56 69 60 +9 0 231 5750 4 4 6 .32 2.99 2.15 +.84 10.51 13.64 -3.13
20*60 45 53 61 -8 12 243 5762 0 4 6 T 2.99 2.27 +.72 10.51 13.76 -3.25
21*57 41 49 61-12 16 259 5778 0 4 6 T 2.99 2.39 +.60 10.51 13.88 -3.37
22*62 37 50 61-11 15 274 5793 0 4 6 0 2.99 2.51 +.48 10.51 14.00 -3.49
23*67 35 51 62-11 14 288 5807 0 4 6 0 2.99 2.63 +.36 10.51 14.12 -3.61
24*78 45 62 62 0 3 291 5810 0 4 6 .42 3.41 2.75 +.66 10.93 14.24 -3.31
25*68 56 62 62 0 3 294 5813 0 4 6 2.48 5.89 2.87+3.02 13.41 14.36 -0.95
26*67 49 58 63 -5 7 301 5820 0 4 6 0 5.89 2.99+2.90 13.41 14.48 -1.07
27*68 45 57 63 -6 8 309 5828 0 4 6 0 5.89 3.11+2.78 13.41 14.60 -1.19
28*70 45 58 63 -5 7 316 5835 0 4 6 0 5.89 3.23+2.66 13.41 14.72 -1.31
29*60 54 57 63 -6 8 324 5843 0 4 6 .10 5.99 3.35+2.64 13.51 14.84 -1.33
30*68 55 62 64 -2 3 327 5846 0 4 6 T 5.99 3.47+2.52 13.51 14.96 -1.45
31*69 54 62 64 -2 3 330 5849 0 4 6 .34 6.33 3.59+2.74 13.85 15.08 -1.23
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
...HEAVY RAINFALL SHATTERS DAILY RAINFALL RECORD AT PITTSBURGH INTERNATIONAL AIRPORT... ...HEAVY RAINFALL ALSO BREAKS MAXIMUM RAINFALL FOR ONE DAY IN MAY AT PITTSBURGH INTERNATIONAL AIRPORT... ...HEAVY RAINFALL ACROSS WESTERN PENNSYLVANIA...NORTHERN WEST VIRGINIA CAUSING NUMEROUS AREAS OF FLOODING... THE HEAVY RAINFALL THAT HAS OCCURRED ACROSS THE REGION SINCE LATE SATURDAY NIGHT IS NOT ONLY CAUSING ABUNDANT FLOODING ACROSS WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA BUT HAS ALSO SHATTERED THE DAILY RECORD RAINFALL FOR MAY 25TH AT PITTSBURGH INTERNATIONAL AIRPORT. AS OF 1000PM 2.48 INCHES OF RAIN HAS BEEN RECORDED AT PITTSBURGH INTERNATIONAL AIRPORT. THIS SMASHES THE PREVIOUS RECORD OF 1.09 INCHES SET IN 1955 BY 1.39 INCHES. THIS ALSO BREAKS THE RECORD FOR MAXIMUM RAINFALL IN ONE DAY IN MAY OF 2.31 INCHES SET IN MAY 24TH 1973. WITH TODAYS RAINFALL...THE MONTHLY TOTAL OF RAINFALL SO FAR IN MAY IS 5.89 INCHES. THIS TIES FOR THE 9TH WETTEST MAY SO FAR...AND MORE RAIN IS EXPECT BY WEEKS END. HERE ARE ADDITIONAL HEAVY RAINFALL REPORTS AS OF 1000PM SINCE MIDNIGHT... ALLEGHENY COUNTY... NATIONAL WEATHER SERVICE OFFICE MOON TOWNSHIP...3.03 INCHES PENN HILLS...4.10 INCHES MONROEVILLE...3.50 INCHES INDIANA COUNTY... INDIANA...3.75 INCHES BLAIRSVILLE...3.75 INCHES WASHINGTON COUNTY... EIGHT-FOUR...3.60 INCHES WASHINGTON...3.40 INCHES WESTMORELAND COUNTY... ST BONIFACE/STAHLSTOWN...4.00 INCHES NEW KENSINGTON...3.00 INCHES LOWER BURRELL...3.50 INCHES LATROBE...3.20 INCHES NEW STANTON/RACHELWOOD...3.35 INCHES IRWIN...3.50 INCHES BUTLER COUNTY... BUTLER...3.00 INCHES SARVER...3.65 INCHES EVANS CITY...3.00 INCHES ARMSTRONG COUNTY... FREEPORT...3.60 INCHES FAYETTE COUNTY... BULLSKIN TOWNSHIP...3.25 INCHES IN NORTHERN WEST VIRGINIA...RAINFALL RATES HAVE RANGED UPWARD OF 2.50 INCHES. AS A RESULT OF THESE RAINFALL AMOUNTS FLASH FLOOD WARNINGS CONTINUE TILL 4AM FOR 8 COUNTIES IN WESTERN PENNSYLVANIA AND 1 COUNTY IN THE NORTHERN WEST VIRGINIA PANHANDLE. THE HEAVIEST RAIN FELL OVER WESTERN PENNSYLVANIA BETWEEN A BOUNDARY OF ROUTE 422 NORTH AND INTERSTATE 70 SOUTH.
...HEAVY RAINFALL SHATTERS DAILY RAINFALL RECORD AT MORGANTOWN MUNICIPAL AIRPORT... THE HEAVY RAINFALL THAT HAS OCCURRED ACROSS THE REGION SINCE LATE SATURDAY NIGHT HAS BROKEN THE RECORD DAILY RAINFALL FOR MAY 25TH AT THE MORGANTOWN MUNICIPAL AIRPORT IN WEST VIRGINIA WHEN 1.16 INCHES OF RAINFALL WAS RECORDED. THE PREVIOUS RECORD FOR MAY 25TH AT THE MORGANTOWN MUNICIPAL AIRPORT WAS 0.61 INCHES SET IN 1979.
...THIS HAS BEEN PITTSBURGH'S COLDEST MAY ON RECORD!!!... ...THE COLDEST EVER... THE AVERAGE HIGH TEMPERATURE FOR MAY 1997 WAS 64.5 DEGREES AND THE AVERAGE LOW WAS 43.9 DEGREES. THIS COMPUTES TO A MONTHLY MEAN TEMPERATURE OF 54.2 DEGREES WHICH RANKS AS THE COLDEST MAY EVER... 0.1 DEGREE COLDER THAN THE PREVIOUS RECORD OF 54.3 DEGREES IN 1967. THIS MAY WAS 5.3 DEGREES COLDER THAN NORMAL. ...THE 7TH WETTEST... PRECIPITATION FOR THE MONTH TOTALED 6.33 INCHES WHICH RANKS AS THE 7TH WETTEST MAY...JUST 0.27 INCHES SHY OF THE MAY RECORD OF 6.60 INCHES IN 1858. PRECIPITATION THIS MAY WAS 2.74 INCHES ABOVE NORMAL. ...THE 6TH COLDEST SPRING... THE SPRING MONTHS AS A WHOLE ALSO AVERAGED WELL BELOW NORMAL. CLIMATOLOGISTS CONSIDER SPRING TO BE THE MONTHS OF MARCH...APRIL...AND MAY. THIS YEAR THE MARCH MEAN WAS 40.5 DEGREES...THE APRIL MEAN WAS 46.4 DEGREES...AND THE MAY MEAN WAS 54.2 DEGREES. THIS GIVES AN AVERAGE SPRING TEMPERATURE OF 47.0 WHICH IS 2.5 DEGREES BELOW NORMAL AND THE 6TH COLDEST SPRING ON RECORD. THE COLDEST SPRING IS 45.6 DEGREES IN 1984 AND 1971. THE COLDEST MAYS... 1. 54.2 IN MAY 1997 2. 54.3 IN MAY 1967 3. 54.6 IN MAY 1917 4. 54.7 IN MAY 1968 5. 55.2 IN MAY 1961 NORMAL MAY 59.5 LAST MAY (1996) 60.0 THE WETTEST MAYS... 1. 6.60 IN 1858 2. 6.56 IN 1989 3. 6.55 IN 1933 4. 6.45 IN 1889 5. 6.36 IN 1968 6. 6.34 IN 1857 7. 6.33 IN 1997 NORMAL MAY 3.59 LAST MAY (1996) 2.95 THE COLDEST SPRINGS... 1. 45.6 IN 1984 AND 1971 3. 45.8 IN 1960 4. 46.5 IN 1940 5. 46.8 IN 1961 6. 47.0 IN 1997 NORMAL SPRING 49.5 LAST SPRING (1996) 48.5 TEMPERATURE RECORDS FOR PITTSBURGH DATE TO 1871 AND PRECIPITATION RECORDS...THOUGH INCOMPLETE IN PARTS OF THE 1800S...DATE BACK TO 1836.
MAY 1997
TEMPERATURES......
AVERAGE MAXIMUM................................. 64.5 DEGREES
AVERAGE MINIMUM................................. 43.9 DEGREES
AVERAGE FOR MONTH............................... 54.2 DEGREES
DEPARTURE FROM NORMAL........................... -5.3 DEGREES
HIGHEST AND DATE................... 82 DEGREES ON THE 18/19TH
LOWEST AND DATE........................ 33 DEGREES ON THE 7TH
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..................................... 329
DEPARTURE FROM NORMAL................................... +115
SEASONAL TOTAL HEATING.................................. 5848
COOLING DEGREE DAYS..................................... 4
DEPARTURE FROM NORMAL................................... -40
SEASONAL TOTAL COOLING.................................. 6
PRECIPITATION DATA
TOTAL FOR THE MONTH............................ 6.33 INCHES
DEPARTURE FROM NORMAL.......................... +2.74 INCHES
TOTAL FOR THE YEAR............................. 7.52 INCHES
DEPARTURE FROM NORMAL.......................... -3.97 INCHES
MAXIMUM PRECIPITATION IN 24 HOURS.... 2.90 INCHES ON 24-25TH
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...... 10
NUMBER OF DAYS WITH PRECIPITATION 0.50 INCH OR MORE...... 3
NUMBER OF DAYS WITH PRECIPITATION 1.00 INCH OR MORE...... 2
SUNSHINE DATA NOT AVAILABLE
HIGHLIGHTS...
MAY 1997 WAS THE COOLEST MAY ON RECORD...BREAKING THE OLD RECORD FROM
1967 BY A TENTH OF A DEGREE. IT WAS ALSO THE 7TH WETTEST MAY ON RECORD
...ONLY 0.27 OF AN INCH FROM THE RECORD 6.60 INCHES SET IN 1858. 1997
WILL LOG IN THE CLIMATE BOOKS WITH THE 6TH COLDEST SPRING ON RECORD.
OTHER RECORDS BROKEN THIS MONTH INCLUDE THE MOST PRECIPITATION IN ANY
SINGLE DAY IN MAY...2.48 INCHES ON THE 25TH...AND A SINGLE DAY RECORD
OF 1.05 INCHES ON THE 18TH.