May Temperature/Precipitation (thru 2009) 
               Normals and Extremes for Galveston (1971-2000)
                    (Temperature Records from 1875)
                   (Precipitation Records from 1871)
                         (last update 6/1/09) 

    ------------- TEMPERATURE -------------------   ------ PRECIPITATION ---
     NORMAL   RECORD     LOW     RECORD    HIGH      RECORD  CUMULATIVE PCPN     
    MAX MIN  MAX YEAR    MAX    MIN YEAR   MIN        PCPN    DAILY  YEARLY 
    ---------------------------------------------   ------------------------    
 1  79  68   88  1875  65 1903  52  1903  76 2002   3.41 1974  0.10   12.11 
 2  79  69   87  1900  64 1970  53  1929  78 1948   2.02 1966  0.20   12.21 
 3  79  69   94  1984  66 1954  54  1876  76 2006*  1.51 1887  0.30   12.31 
 4  79  69   88  1951  67 1954  52  1954  78 2002   2.55 1904  0.40   12.41 
 5  80  69   87  1908  67 1979  57  1957  77 2002   3.44 1941  0.51   12.52 

 6  80  71   85  2009* 68 1957  53  1917  77 2009*  2.10 1987  0.62   12.63 
 7  80  71   87  1934  60 1917  53  1917  79 2002   2.83 1938  0.73   12.74 
 8  80  71   87  2008* 66 1917  54  1917  78 2009*  3.02 1885  0.84   12.85 
 9  80  71   88  2002  69 1917  58  1885  78 2002*  1.96 1921  0.95   12.96 
10  80  71   88  1995  70 1997* 59  1981* 78 2002*  2.71 1936  1.06   13.07 

11  80  71   87  2009  71 1909  60  1924  78 2009*  1.52 1930  1.17   13.18 
12  81  71   87  2009* 70 1960* 56  1960  79 2002   2.95 1972  1.29   13.30 
13  81  72   88  2007* 70 1960  60  1871  78 2009*  3.00 1966  1.41   13.42 
14  81  72   88  2007* 72 1976* 62  1914  78 1995   1.54 1908  1.53   13.54 
15  81  72   89  1875  68 1907  57  1926  78 2009   2.36 1953  1.65   13.66 
  
16  81  72   90  1875  70 1945  56  1945  78 2003*  2.35 1920  1.77   13.78 
17  82  72   86  2006* 68 1886  58  1945  78 1883   2.34 2002  1.89   13.90 
18  82  72   89  1875  71 2002  58  1916  79 1922   5.88 1929  2.01   14.02 
19  82  73   87  2008* 73 2002  56  2002  79 1933*  4.04 1984  2.13   14.14 
20  82  73   91  2003  72 1894  59  1981  78 1989*  4.89 1947  2.26   14.27 

21  82  74   92  2005  74 1931  61  1883  78 1989*  6.13 1916  2.39   14.40 
22  82  74   90  2005  67 1892  54  1892  78 1989*  2.56 1913  2.52   14.53 
23  82  74   90  1877  70 1892  59  1892  79 2008*  1.76 1947  2.65   14.66 
24  83  74   91  1988* 74 1913  62  1940* 79 2008*  2.74 1919  2.78   14.79 
25  83  74   89  1958  73 1919  64  1951  79 2008*  1.85 1871  2.91   14.92 
  
26  83  75   90  1958  72 1925  62  1901  80 1996*  1.91 1883  3.04   15.05
27  83  75   90  1922  70 1961  57  1961  80 2000*  5.24 1874  3.17   15.18 
28  83  75   90  1958  77 1936* 62  1901  81 1996   1.85 1876  3.30   15.31 
29  84  75   90  1959  77 1910  64  1992* 82 1996   2.86 1914  3.43   15.44 
30  84  75   91  1911  72 1889  57  1889  80 2004*  7.14 1975  3.56   15.57   

31  84  76   93  1911  72 1889  61  1889  81 1989   2.09 1981  3.70   15.71 

* indicates a record that has been tied on a previous year

MAY Normals
MEAN TEMPERATURE......76.9
MEAN PRECIPITATION....3.70 
HEATING DEGREE DAYS...0    
COOLING DEGREE DAYS...335 

ALLTIME MAY RECORDS
HIGH  94  05/03/1984    
LOW   52  05/01/1903 and 05/04/1954