DENVER NORMALS AND MEANS 1971-2000 AND EXTREMES 1872-2009
DENVER INTERNATIONAL AIRPORT, CO. LAT 39.52N LON 104.40W ELEV 5431 FT
_____________________________________________________________________________
| J | F | M | A | M | J | J | A | S | O | N | D | A
NORMALS | A | E | A | P | A | U | U | U | E | C | O | E | V
---------| N | B | R | R | Y | N | L | G | P | T | V | C | G
TEMPS |-----|----|----|----|----|----|----|----|----|----|----|-----|-----
DAY MAX | 43.2|47.2|53.7|60.9|70.5|82.1|88.0|86.0|77.4|66.0|51.5|44.1 | 64.2
DAY MIN | 15.2|19.1|25.4|34.2|43.8|53.0|58.7|57.4|47.3|35.9|23.5|16.4 | 35.8
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
MONTHLY | 29.2|33.2|39.6|47.6|57.2|67.6|73.4|71.7|62.4|51.0|37.5|30.3 | 50.1
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
EXTREMES | | | | | | | | |TIED| |TIED| | MAX
REC HIGH | 76 | 77 | 84 | 90 | 95 | 104| 105| 105| 97 | 90 | 80 | 79 | 105
DAY | 27TH| 4TH|26TH|30TH|26TH|26TH|20TH| 8TH| 4TH| 1ST|11TH| 5TH | AUG
YEAR | 1888|1890|1971|1992|1942|1994|2005|1878|1995|1892|1990|1939 | 1878
| | | | | | | | |LAST| |2006| |
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
EXTREMES | | | | | | |TIED|TIED| | | |TIED | MIN
REC LOW | -29 |-25 | -11| -2 | 19 | 30 | 42 | 40 | 17 | -2 | -18| -25 | -29
DAY | 9TH |1ST |28TH| 2ND| 3RD| 2ND| 4TH|26TH|29TH|29TH|29TH|22ND | JAN
YEAR | 1875|1951|1886|1975|1907|1951|1903|1910|1985|1917|1877|1990 | 1875
|*MIN | | | | | |LAST|LAST| | | |LAST |
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|------
NORMAL | J | F | M | A | M | J | J | A | S | O | N | D |TOTAL
DEGREE | A | E | A | P | A | U | U | U | E | C | O | E |SEASN
DAYS | N | B | R | R | Y | N | L | G | P | T | V | C |YEAR
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
HEATING |1111 | 892| 788| 524| 267| 60| 1| 9| 136| 436| 826|1078 | 6128
COOLING | 0 | 0 | 0 | 2| 23| 136| 261| 217| 57| 0 | 0 | 0 | 696
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
% POSSIBLE | | | | | | | | | | | | AVG
SUNSHINE | 71 | 70 | 69 | 67 | 64 | 70 | 71 | 71 | 74 | 72 | 64 | 67 | 69
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
PRECIP | | | | | | | | | | | | |TOTAL
.01 - UP | 5.8 | 5.9 8.6 8.5 10.8 8.7 9.3 8.8 6.3 5.3 5.6 5.3 | 89.1
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
AVG NO. | J | F | M | A | M | J | J | A | S | O | N | D |
DAYS | A | E | A | P | A | U | U | U | E | C | O | E |
SNO/HAIL | N | B | R | R | Y | N | L | G | P | T | V | C |
ICE PELL | | | | | | | | | | | | |TOTAL
1.0 - UP | 2.4 | 2.4| 3.6| 2.5| 0.4| 0.0| 0.0| 0.0| 0.3| 1.2| 2.6| 2.5 | 17.9
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
TSTMS | 0.* | 0.1| 0.3| 1.5| 6.4| 9.9|11.1| 8.3| 3.5| 0.8| 0.1| 0.0 | 41.9
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-----
| J | F | M | A | M | J | J | A | S | O | N | D |TOTAL
| A | E | A | P | A | U | U | U | E | C | O | E |SEASN
| N | B | R | R | Y | N | L | G | P | T | V | C |YEAR
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-----------------------------------------------------------------------------
| J | F | M | A | M | J | J | A | S | O | N | D |TOTAL
| A | E | A | P | A | U | U | U | E | C | O | E |SEASN
| N | B | R | R | Y | N | L | G | P | T | V | C |YEAR
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F+ VISBY | | | | | | | | | | | | |TOTAL

1/4 LESS| 1.1 | 1.6| 1.1| 0.8| 0.5| 0.*| 0.*| 0.6| 0.6| 0.6| 1.2| 1.1 | 9.9
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|------
MAX TEMPS| | | | | | | | | | | | |TOTAL
>= 90 | 0.0 | 0.0| 0.0| 0.*| 0.*| 6.3|15.0| 9.3| 2.2| 0.0| 0.0| 0.0 | 33.1
<= 32 | 6.5 | 4.3| 2.8| 0.*| 0.0| 0.0| 0.0| 0.0| 0.*| 0.*| 2.5| 5.3 | 22.2
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|------
MINIMUM | | | | | | | | | | | | |TOTAL
<= 32 | 29.8|26.0|24.3|11.4| 1.5| 0.0| 0.0| 0.0| 0.8| 8.6|24.4|29.2 |156.1
<= 0 | 3.8| 1.7| 0.5| 0.*| 0.0| 0.0| 0.0| 0.0| 0.0| 0.0| 0.*| 2.8 | 9.0
------------------------------------------------------------------------------
____________________ AVERAGE STATION PRESSURE IN MILLIBARS ___________________
JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL
834.7|834.7|832.3|833.5|834.4|836.4|838.8|839.1|838.5|837.8|835.3|834.9| AVG
HIGHEST STN PRESS 25.71 LOWEST 23.70 (28.83") 835.9 MB = 24.68 INCHES | 835.9
HIGHEST ALTIMETER READING 31.24 INCHES JAN 10 1962
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NORMAL |-----|----|----|----|----|----|----|----|----|----|----|-----|-------
RH % | JAN | FEB| MAR| APR| MAY| JUN| JUL| AUG| SEP| OCT| NOV| DEC | AVG
HOUR 05 | 64 | 67 | 68 | 67 | 71 | 69 | 69 | 70 | 69 | 65 | 68 | 65 | 68
HOUR 11 | 45 | 44 | 42 | 38 | 39 | 37 | 35 | 37 | 38 | 36 | 44 | 45 | 40
HOUR 17 | 49 | 44 | 40 | 35 | 38 | 35 | 34 | 35 | 34 | 35 | 49 | 52 | 40
HOUR 23 | 63 | 65 | 62 | 58 | 61 | 59 | 57 | 59 | 59 | 59 | 65 | 64 | 61
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-------
WIND-MPH| | | | | | | | | | | | | AVG
AVG SPEED| 8.6 |8.8 | 9.7|10.0| 9.3| 8.9| 8.3| 8.0| 7.9| 7.8| 8.2| 8.4 | 8.6
DIRECTION| S | S | S | S | S | S | S | S | S | S | S | S | S
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-------
FAST 1-MIN | | | | | | | | | | | |
DIRECTION| 32 | 30 | 30 | 33 | 36 | 21 | 29 | 33 | 29 | 01 | 36 | 32 |FAST
SPEED | 44 | 36 | 41 | 46 | 43 | 38 | 46 | 33 | 36 | 36 | 36 | 38 | 46
YEAR | 1982|1989|1991|1993|1983|1987|1993|1989|1988|1992|1987|1981 | 1993
---------|-----|----|----|----|----|----|----|----|----|----|----|-----|-------
PEAK GUST| JAN | FEB| MAR| APR| MAY| JUN| JUL| AUG| SEP| OCT| NOV| DEC |
DIRECTION| W | NW | W | N | SE | NW | W | NW | NW | NW | W | W |PEAK
SPEED | 55 | 52 | 59 | 63 | 60 | 60 | 55 | 75 | 85 | 48 | 49 | 51 | 85
(MPH) | 1993|1990|1989|2009|1991|1988|1993|1877|1995|1990|1990|1990 |1995
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_______________________________________________________________________________
RAIN | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
MONTHLY| | | | | | | | | | | |
NORMAL | 0.51| 0.49| 1.28| 1.93| 2.32| 1.56| 2.16| 1.82| 1.14| 0.99| 0.98| 0.63
| | | | | | | | ***ANNUAL NORMAL 15.81***
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MAXIMUM| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
MONTH |1883 | 1934| 1983| 1900| 1876| 1882| 1965| 1979| 1961| 1969| 1946|1913
PCPN |2.35 | 2.01| 4.56| 8.24| 8.57| 4.96| 6.41| 5.85| 4.67| 4.17| 3.21|5.21
| | | | | MOST| ***ANNUAL RECORD 23.31 IN 1967***
|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____
-------------------------------------------------------------------------------
MINIMUM| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
MONTHLY| .01 | .01 | 0.11| 0.03| 0.06| T | .01 | .02 | T | T | T | .00
YEAR | 1952| 1970| 1908| 1963| 1974| 1890| 1901| 1924| 1944| 1934| 1949|1881
| LAST| | | | | | | | | | | MIN
|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____
MAXIMUM| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
24 HRS | 1.22| 1.01| 2.79| 3.25| 6.53| 3.16| 3.06| 3.43| 2.70| 2.58| 1.29|2.29
| 1883| 1953| 1983| 1967| 1876| 1970| 1997| 1951| 1902| 1892| 1975|1913
| 31 | 19 | 4-5 | 13 |21-22| 11 |29-30| 2-3 |20-21|12-13| 8-9 | 4-5
_______________________________________________________________________________
MONTHLY| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
SNOW | 7.7 | 6.3 | 11.7| 9.1 | 1.3 | T | 0.0 | 0.0 | 2.1 | 4.1 |10.7 | 8.7
NORMAL | | | | | | | ***ANNUAL NORMAL 61.7*** |
-------|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----
MAXIMUM| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
MONTHLY|24.3 | 22.1| 32.5| 33.8| 15.5| 0.4 | 0.0 | 0.0 | 17.2| 31.2| 42.6|57.4
SNOW/ICE|1992| 1912| 1944| 1933| 1898| 1919| ----| ----| 1936| 1969| 1946|1913
PELLETS| ***ANNUAL RECORD 118.7 IN 1908/09 | | | | | |
-------|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----
MAXIMUM| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC
24 HRS | 14.5| 12.0| 22.9| 23.0| 12.0| 0.4 | 0.0 | 0.0 | 15.0| 19.1| 17.7| 23.6
SNOW | 1992| 1931| 2003| 1885| 1917| 1919| | | 1936| 1997| 1946| 1982
| 7-8 |27-28|18-19|22-23| 5 | 1 | | |27-28|24-25| 2-3 | 24
_______________________________________________________________________________
NOTES: 0.* OR * MEANS THE VALUE IS BETWEEN 0.0 AND 0.4

DATA IS FROM:
DOWNTOWN DENVER--------------- 1872 - DEC 1949
STAPLETON AIRPORT------------- JAN 1950 - FEB 1995
DENVER INTERNATIONAL AIRPORT-- MAR 1995 - PRESENT
SNOW DATA (STAPLETON AIRPORT)- JAN 1950 - PRESENT

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