Mean Monthly and Annual Number of Hours with Measurable Precipitation

(*) = Less than 1/2 hour Maximum 1-hour totals are based on data from top of the hour. Maximum 60-minute totals will be greater.

For more information click here on Western States, Alaska or Hawaii and Pacific Islands

             NORMALS    JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC   YEAR
  
  Alaska     1931-60    0.2   3.9   9.6  24.3  38.6  49.7  53.5  50.9  42.5  28.7  12.6   2.2   26.4
             1941-70    0.6   3.9   9.7  23.3  38.6  49.5  53.5  50.9  42.6  27.5  12.3   1.5   26.2
             1951-80   -0.2   2.2   8.8  22.9  38.5  49.2  53.6  51.3  42.5  26.7  12.3   0.9   25.7
             1961-90    1.4   2.6  10.4  22.8  38.8  49.6  54.2  51.4  42.7  26.4  11.1   3.4   26.2
             1971-00    1.1   3.1  10.7  23.9  39.5  50.3  54.9  51.8  42.6  26.2  11.2   3.9   26.6
  
  Arizona    1931-60   40.6  44.3  49.8  57.6  65.4  74.3  80.0  77.8  72.7  61.8  49.1  42.7   59.7
             1941-70   40.9  44.7  49.1  57.0  65.4  74.0  80.0  77.8  72.4  61.8  49.6  42.2   59.6
             1951-80   41.0  44.8  49.2  56.4  64.9  74.6  80.1  77.7  72.1  61.6  49.3  41.9   59.5
             1961-90   41.2  45.4  49.8  57.0  65.4  74.9  80.1  77.9  71.8  61.3  49.7  41.9   59.7
             1971-00   42.3  46.2  51.0  57.6  66.0  75.5  80.2  78.5  72.6  61.7  49.6  42.5   60.3
  
  California 1931-60   43.3  46.4  50.6  56.3  62.3  68.8  75.2  73.8  69.7  60.9  51.1  45.3   58.6
             1941-70   43.6  47.1  50.0  55.6  62.0  68.6  75.0  73.7  69.6  61.0  51.2  44.8   58.5
             1951-80   43.9  47.6  50.2  55.1  61.9  69.3  75.1  73.9  69.6  61.2  51.1  44.8   58.6
             1961-90   44.4  48.1  50.9  55.7  62.5  69.9  75.2  74.3  69.3  61.3  51.1  44.5   58.9
             1971-00   45.1  48.5  51.8  56.5  63.1  70.2  75.3  74.6  69.9  61.6  51.1  45.0   59.4
  
  Colorado   1931-60   23.8  27.3  33.6  43.5  52.9  62.3  68.2  66.6  58.8  48.1  34.1  26.8   45.5
             1941-70   23.7  27.4  32.6  43.2  52.9  61.6  67.8  65.9  58.0  47.7  34.3  26.2   45.1
             1951-80   23.1  27.4  33.1  42.6  52.6  62.1  67.9  65.6  57.7  47.4  33.7  25.7   44.9
             1961-90   22.9  27.4  34.0  43.0  52.4  61.8  67.8  65.5  57.3  46.8  34.2  24.8   44.8
             1971-00   23.7  28.3  35.6  43.1  52.5  62.2  67.6  65.7  57.7  46.6  33.5  25.2   45.1
  
  Hawaii     1931-60 -999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9 -999.9
             1941-70 -999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9 -999.9
             1951-80 -999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9-999.9 -999.9
             1961-90   67.0  66.9  67.5  68.4  69.8  71.3  72.1  72.7  72.7  72.0  70.2  68.1   69.9
             1971-00   67.0  67.0  67.7  68.5  69.7  71.4  72.3  73.0  72.9  72.2  70.4  68.2   70.0
  
  Idaho      1931-60   21.5  26.1  33.0  43.0  51.7  58.3  66.9  64.5  56.3  46.4  32.7  25.8   43.9
             1941-70   21.8  27.3  32.4  42.1  51.1  57.8  66.4  64.4  55.9  45.7  33.2  25.2   43.6
             1951-80   22.5  27.8  32.7  41.8  51.0  58.7  66.5  64.4  55.9  45.5  32.9  25.2   43.7
             1961-90   22.7  27.9  34.4  42.6  51.1  59.4  66.4  65.0  55.6  45.4  33.3  24.0   44.0
             1971-00   23.6  28.4  35.9  43.5  51.6  59.3  66.2  65.4  56.1  45.5  32.9  24.3   44.4
  
  Montana    1931-60   16.7  20.7  28.8  41.7  52.2  59.3  67.6  65.3  55.4  45.1  30.3  22.6   42.1
             1941-70   16.1  22.3  28.3  41.3  51.4  58.8  66.8  65.2  54.6  44.9  30.4  21.5   41.8
             1951-80   15.3  22.9  29.2  40.8  51.5  59.7  66.7  65.0  54.8  44.7  30.0  21.5   41.9
             1961-90   17.4  23.7  31.4  41.9  51.8  60.6  66.9  65.4  54.5  44.6  30.2  19.9   42.4
             1971-00   18.4  24.4  32.9  42.5  52.2  60.6  66.4  65.6  55.1  44.3  29.7  20.8   42.7
  
  Nevada     1931-60   29.2  33.4  39.8  48.0  56.0  64.2  72.6  70.4  62.4  51.3  38.8  32.1   49.8
             1941-70   29.5  34.3  38.7  46.7  55.4  63.2  71.9  69.6  61.7  51.0  38.9  31.3   49.4
             1951-80   29.9  34.9  39.0  46.0  55.1  64.1  72.0  69.6  61.5  50.9  38.7  31.1   49.4
             1961-90   29.7  34.9  39.8  46.4  55.3  64.5  71.9  69.8  61.0  50.6  38.7  30.5   49.4
             1971-00   30.4  35.5  41.2  47.3  55.7  64.8  71.9  70.2  61.6  50.6  38.4  30.9   49.9
  
  New Mexico 1931-60   33.8  37.8  43.5  52.1  60.6  70.0  73.4  71.9  65.5  55.1  42.1  35.5   53.4
             1941-70   33.8  37.8  42.8  52.0  60.8  69.5  73.6  71.8  65.2  54.9  42.6  35.2   53.3
             1951-80   33.9  37.7  43.3  51.5  60.3  69.7  73.6  71.3  64.8  54.6  42.2  35.0   53.2
             1961-90   33.5  37.9  43.9  51.8  60.4  69.3  73.3  71.0  64.4  54.3  42.8  34.8   53.1
             1971-00   34.4  38.9  44.9  51.8  60.7  69.7  73.2  71.3  64.8  54.3  42.4  34.9   53.4
  
  Oregon     1931-60   30.8  34.9  40.1  46.7  53.2  58.9  66.0  64.4  58.4  49.6  39.0  34.0   48.0
             1941-70   31.0  36.2  39.7  45.7  52.7  58.8  65.8  64.3  58.4  49.2  39.5  33.8   47.9
             1951-80   31.7  36.7  39.7  45.2  52.5  59.3  66.0  64.5  58.4  49.2  39.2  33.7   48.0
             1961-90   32.0  36.7  40.7  45.6  52.5  59.9  65.8  65.2  58.0  49.1  39.2  32.6   48.1
             1971-00   32.6  36.7  41.5  46.4  52.9  59.6  66.0  65.5  58.6  49.2  39.0  32.8   48.4
  
  Utah       1931-60   24.2  29.3  37.2  46.9  55.8  64.3  72.2  70.1  61.8  50.1  35.8  28.0   48.0
             1941-70   24.7  30.2  36.6  46.1  55.7  63.7  72.1  69.9  61.3  50.0  36.5  27.7   47.9
             1951-80   25.1  30.7  37.1  45.7  55.5  64.7  72.5  69.9  61.2  49.9  36.4  27.2   48.0
             1961-90   24.7  30.8  38.1  46.2  55.6  65.2  72.6  70.2  60.9  49.6  36.9  26.7   48.1
             1971-00   25.9  31.5  39.7  46.9  55.9  65.6  72.5  70.6  61.5  49.5  36.3  27.3   48.6
  
  Washington 1931-60   29.3  33.6  39.8  47.3  54.4  59.6  65.7  64.4  58.6  49.1  38.0  33.0   47.7
             1941-70   29.3  35.1  39.5  46.4  53.8  59.6  65.6  64.4  58.5  48.6  38.3  32.5   47.6
             1951-80   29.8  35.5  39.5  46.1  53.5  59.8  65.5  64.6  58.4  48.5  38.1  32.7   47.7
             1961-90   30.8  35.8  40.9  46.6  53.5  60.3  65.5  65.4  58.3  48.4  38.4  31.6   48.0
             1971-00   31.5  35.8  41.5  47.4  54.1  60.1  65.7  65.8  58.7  48.5  38.3  31.7   48.3
  
  Wyoming    1931-60   18.6  22.1  28.9  40.1  50.1  58.8  66.8  64.8  55.3  44.7  30.0  22.9   41.9
             1941-70   18.7  23.1  28.3  39.9  50.0  58.2  66.4  64.7  54.8  44.4  30.4  22.2   41.8
             1951-80   18.3  23.5  29.0  39.5  50.1  59.2  66.7  64.4  54.7  44.2  29.7  21.9   41.8
             1961-90   18.6  23.3  30.5  40.1  49.9  59.5  66.7  64.4  54.3  43.7  30.0  20.3   41.8
             1971-00   19.2  23.7  32.1  40.4  50.0  59.6  66.3  64.7  54.7  43.4  29.2  20.7   42.0