National Weather Service United States Department of Commerce

Winter Weather Decision Support

A winter storm system will move through the Colorado Rockies this weekend. Periods of snow and wind will impact travel, particularly over the Continental Divide Saturday night and across the plains on Sunday. Read More >

  ...1999 WEATHER SUMMARY...
  
  JAN..AN ENJOYABLE MONTH WITH THE AVERAGE MONTHLY TEMPERATURE
       6.5 DEGREES ABOVE NORMAL. ONLY 1.5 INCHES OF SNOW...
       WELL BELOW NORMAL, AND .11 INCHES OF PRECIPITATION, ALSO
       BELOW NORMAL.
  FEB..CONTINUED WARM WITH THE AVERAGE TEMPERATURE 5.2 DEGREES
       ABOVE NORMAL. DRY WITH ONLY .01 PRECIPITATION AND .3 INCH
       OF SNOW. COLDEST DAY OF THE YEAR WHEN THE TEMPERATURE FALLS
       TO 1 ABOVE ZERO.
  MAR..ANOTHER WARM MONTH WITH TEMPERATURES 3.O ABOVE NORMAL. BOTH
       PRECIPITATION AND SNOWFALL BELOW NORMAL FOR THE 3RD MONTH
       IN A ROW.
  APR..CHANGES GALORE THIS MONTH. THE AVERAGE MONTHLY TEMPERATURE
       FALLS TO 4.0 DEGREES BELOW NORMAL. 5.30 INCHES OF RAIN V/S
       NORMAL OF .88, AND SNOWFALL OF 7.6 INCHES V/S NORMAL 3.1.
       HEAVY RAIN AT THE END OF THE MONTH AND FIRST PART OF MAY
       CAUSES NUMEROUS FLOODING PROBLEMS AROUND THE CITY AND COUNTY.
       THE MONTH ENDS UP THE 3RD WETTEST APRIL ON RECORD.
  MAY..RAIN CONTINUES DURING THE FIRST PART OF THE MONTH WITH 1.84
       INCHES, ABOVE NORMAL OF 1.25 INCHES AND TEMPERATURES 1.5
       DEGREES BELOW NORMAL.
  JUN..A MILD AND DRY MONTH FOR A CHANGE WITH BOTH TEMPERATURES AND
       PRECIPITATION BELOW NORMAL.
  JUL..WARMEST DAY OF THE YEAR WAS 104 DEGREES ON THE 2ND. AVERAGE
       MONTHLY TEMPERATURES NEAR NORMAL BUT PRECIPITATION BELOW
       NORMAL.
  AUG..AVERAGE MONTHLY TEMPERATURE 1 DEGREE BELOW NORMAL WITH
       RAINFALL OF 2.98 INCHES, ALMOST 1 INCHE ABOVE NORMAL.
  SEP..STILL SLIGHTLY COOLER AND DRY AS TEMPERATURES ARE 3.1 DEGREES
       BELOW NORMAL AND RAINFALL 1/3 OF THE NORMAL OF .90 INCHES.
  OCT..ANOTHER MONTH OF BELOW NORMAL TEMPERATURES, BUT PRECIPITATION
       AND SNOWFALL SLIGHTLY ABOVE NORMAL.
  NOV..INDIAN SUMMER OR AN ENJOYABLE MONTH WITH TEMPERATURES 4.1
       DEGREES ABOVE NORMAL. BOTH PRECIPITATION AND SNOWFALL WELL
       BELOW NORMAL.
  DEC..WARM AND DRY WITH THE AVERAGE MONTHLY TEMPERATURE ABOVE
       NORMAL, BUT BOTH PRECIPITATION AND SNOWFALL BELOW NORMAL.
       WITH ONLY .4 INCHES OF SNOW, THIS TIES 1904 AND 1918 AS
       FIFTH LEAST SNOWIEST DECEMBER ON RECORD.
  
                         1999   STATISTICS
      Avg   Avg   Mean  Dep fm   Pcpn   Snow   Htg Deg.  Col.Deg 
      Max   Min         Normal                  Days       Days
JAN  52.9   19.6  36.3  +6.5      .11    1.5     884         0
FEB  62.5   18.1  40.3  +5.2      .01    0.3     684         0
MAR  63.0   26.3  44.7  +3.0      .56    4.8     620         0
APR  62.3   33.3  47.8  -4.0     5.30    7.6     513         0
MAY  75.8   43.4  59.6  -1.5     1.84     T      180        19
JUN  86.6   50.2  68.4  -2.6      .19     0       26       136
JUL  93.7   60.7  77.2  +0.1     1.86     0        0       385
AUG  89.3   57.8  73.6  -0.7     2.98     0        0       275
SEP  78.6   46.8  62.7  -3.1      .31     0      140        79
OCT  73.2   31.2  52.2  -1.4      .62    2.0     390         0
NOV  66.8   22.3  44.6  +4.1      .02     T      606         0
DEC  52.7   14.0  33.4  +2.3      .05     .4     973         0
                                                    
MEAN 73.2   37.2         TOTALS 13.85   16.6    5016        894
NORML68.6   36.8         NORMAL 11.19   31.8    5413        973
  
  AVERAGE MAXIMUM TEMPERATURE FOR THE YEAR 73.2  NORMAL 68.6
  AVERAGE MINIMUM TEMPERATURE FOR THE YEAR 37.2  NORMAL 36.8
  AVERAGE TEMPERATURE FOR THE YEAR   55.2        NORMAL 52.7
  HIGHEST TEMPERATURE WAS  104 on July 2ND
  LOWEST  TEMPERATURE WAS    1 on February 12th
  
  DAYS WITH MAX 90 OR HIGHER    68     NORMAL 65
  DAYS WITH MAX 32 OR LOWER     2      NORMAL 18
  DAYS WITH MIN  32 OR LOWER    185    NORMAL 156
  DAYS WITH MIN ZERO OR LOWER   0      NORMAL 10
  
  ...PRECIPITATION...
  TOTAL     13.85    INCHES   NORMAL  11.19          
  MOST IN 24 HOURS WAS   2.04 INCHES ON 29-30th APRIL
  DAYS WITH MEASURABLE PRECIPITATION   69  NORMAL 69
  DAYS WITH THUNDERSTORMS   36  NORMAL 31
  DAYS WITH HAIL  NONE       
  SNOWFALL TOTAL FOR THE YEAR 16.6 INCHES NORMAL 31.8   
  MOST SNOW IN 24 HOURS WAS  5.9 INCHES ON  APRIL 2ND              
  GREATEST SNOW DEPTH WAS    5.0 INCHES ON APRIL 3rd 
  
  ...WIND...
  
  AVERAGE WIND SPEED      7.9 MPH  NORMAL 8.3 MPH
  PEAK WIND GUST    WEST  55  MPH ON   FEBRUARY 17TH
  
  DAYS WITH HEAVY FOG  9     NORMAL 10
  HEATING DEGREE DAYS 5016   NORMAL 5413 
  COOLING DEGREE DAYS  894   NORMAL 973
  
  HIGHEST PRESSURE FOR THE YEAR   30.72 on DECEMBER 24TH
  LOWEST  PRESSURE FOR THE YEAR   29.15 on MAY 3RD