Climatological Report (Annual)
Issued by NWS St Louis, MO

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CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
330 PM CST THU JAN 3 2013

...................................

...THE ST. LOUIS CLIMATE SUMMARY FOR THE YEAR OF 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             115   07/14/1954
 LOW              -22   01/05/1884
HIGHEST           108   07/25
                        06/28
LOWEST             13   01/14
AVG. MAXIMUM     71.3              66.2     5.1
AVG. MINIMUM     51.0              47.9     3.1
MEAN             61.2              57.1     4.1
DAYS MAX >= 90     73
DAYS MAX <= 32      4
DAYS MIN <= 32     68
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        57.96   2008
 MINIMUM        20.69   1953
TOTALS          32.30             40.96   -8.66
DAYS >= .01       105
DAYS >= .10        65
DAYS >= .50        25
DAYS >= 1.00        8
GREATEST
 24 HR. TOTAL    2.29   04/13 TO 04/14

SNOWFALL (INCHES)
RECORDS
 TOTAL           63.3   1912
 24 HR TOTAL     20.0   03/30/1890 TO 03/31/1890
TOTALS            6.4              17.7   -11.3
SINCE 7/1         2.1               5.1    -3.0
DAYS >= TRACE      21
DAYS >= 1.0         3
GREATEST
 SNOW DEPTH         2   02/14
                        01/13
 24 HR TOTAL      1.8   01/12 TO 01/12
                        02/13 TO 02/13

DEGREE_DAYS
HEATING TOTAL    3502              4535   -1033
 SINCE 7/1       1598              1765    -167
COOLING TOTAL    2217              1646     571
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
HIGHEST WIND SPEED/DIRECTION    47/260    DATE  02/29
HIGHEST GUST SPEED/DIRECTION    67/290    DATE  12/20


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             61     HAIL                       6
FOG W/VIS <= 1/4 MILE     6

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.


...2012...A YEAR FOR THE RECORD BOOKS...


...ANNUAL...

WARMEST YEAR ON RECORD (61.2 DEGREES). PREVIOUS 60.1 DEGREES IN 1921.
26 TOTAL DAILY RECORD HIGHS SET OR TIED.
22 TOTAL DAILY RECORD HIGH MINIMUMS SET OR TIED INCLUDING THE WARMEST
MINIMUM EVER RECORDED (86 DEGREES ON 07/25).

RECORD FOR MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
105 DEGREES (11 DAYS...PREVIOUS 10 DAYS IN 1934).

TIED 4TH MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
100 DEGREES (21 DAYS).

3RD MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
90 DEGREES (73 DAYS).

TIED 2ND MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
80 DEGREES (147 DAYS).

RECORD FOR MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
70 DEGREES (203 DAYS...PREVIOUS 200 DAYS IN 2007).

RECORD FOR MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
65 DEGREES (237 DAYS...PREVIOUS 227 DAYS IN 1938).

RECORD FOR MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
60 DEGREES (255 DAYS...PREVIOUS 254 IN 1946).

RECORD FOR MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
55 DEGREES (284 DAYS...PREVIOUS 283 DAYS IN 1946).

RECORD FOR MOST OCCURRENCES OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
50 DEGREES (310 DAYS...PREVIOUS 307 DAYS IN 1990).

1 DAILY RECORD LOW MAXIMUM RECORD SET.
TIED 9TH LEAST SNOWIEST (6.4 INCHES).
2 TOTAL DAILY PRECIPITATION RECORDS SET.


...SEASONAL...

FALL 2012 WAS FIRST BELOW NORMAL SEASONAL AVERAGE TEMPERATURE SINCE WINTER
(DEC-FEB) OF 2010-2011.

TIED LEAST SNOWIEST FALL (SEP - NOV) SEASON ON RECORD (0.0 INCHES - 14TH
OCCURRENCE).

4TH WARMEST SUMMER (JUN - AUG) ON RECORD (82.0 DEGREES)

RECORD FOR MOST OCCURRENCES OF MINIMUM TEMPERATURE GREATER THAN OR EQUAL TO
85 DEGREES (2 DAYS...PREVIOUS 1 DAY IN 2011/1936/1901).

2ND LONGEST STREAK OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
100 DEGREES (10 DAYS ENDING ON 07/07).

2ND LONGEST STREAK OF MAXIMUM TEMPERATURE GREATER THAN OR EQUAL TO
90 DEGREES (23 DAYS ENDING ON 07/19).

WARMEST SPRING (MAR - MAY) ON RECORD (64.8 DEGREES). PREVIOUS 61.5 DEGREES IN
1991.

TIED 3RD LEAST SNOWIEST SPRING ON RECORD (TRACE).


...MONTHLY...


JANUARY...

TIED 13TH WARMEST ON RECORD.
SET OR TIED 2 RECORD HIGH TEMPERATURES.

FEBRUARY...

TIED 15TH WARMEST ON RECORD.
TIED 1 RECORD HIGH TEMPERATURE.

MARCH...

WARMEST MARCH ON RECORD (61.1 DEGREES). PREVIOUS 57.5 DEGREES IN 1910
SET RECORD FOR HIGH TEMPERATURE OCCURRENCES OF AT LEAST 80 DEGREES.
SET OR TIED 5 RECORD HIGH TEMPERATURES.
SET OR TIED 6 RECORD HIGH MINIMUM TEMPERATURES.
TIED 7TH LEAST SNOWIEST ON RECORD.
SET 1 DAILY RAINFALL RECORD.

APRIL...

SET 18TH WARMEST ON RECORD.
SET 1 RECORD HIGH TEMPERATURE.
TIED 12TH WETTEST ON RECORD.

MAY...

WARMEST MAY ON RECORD (73.2 DEGREES). PREVIOUS 73.0 DEGREES IN 1991.
SET RECORD FOR HIGH TEMPERATURE OCCURRENCES OF AT LEAST 90 DEGREES.
SET OR TIED 4 RECORD HIGH TEMPERATURES.
TIED MOST OCCURRENCES OF MINIMUM TEMPERATURE GREATER THAN OR EQUAL
TO 70 DEGREES.

SET OR TIED 6 RECORD HIGH MINIMUM TEMPERATURES.
15TH DRIEST ON RECORD.

JUNE...

TIED 3RD CONSECUTIVE NUMBER OF DAYS WITH HIGH TEMPERATURE REACHING
OR EXCEEDING 105 DEGREES.

SET 3 RECORD HIGH TEMPERATURES INCLUDING ALL TIME MAXIMUM FOR THIS
MONTH (108 DEGREES ON 06/28).

JULY...

WARMEST JULY ON RECORD (88.1 DEGREES). PREVIOUS 87.4 DEGREES IN 1901.
WARMEST MONTH IN ST. LOUIS HISTORY.
SET RECORD FOR NUMBER OF DAYS WITH HIGH TEMPERATURE GREATER THAN OR
EQUAL TO 105 DEGREES.

3RD MOST NUMBER OF DAYS WITH HIGH TEMPERATURE GREATER THAN OR
EQUAL TO 100 DEGREES.

3RD MOST NUMBER OF DAYS WITH HIGH TEMPERATURE GREATER THAN OR
EQUAL TO 95 DEGREES.

SET RECORD FOR NUMBER OF DAYS WITH HIGH TEMPERATURE GREATER THAN OR
EQUAL TO 90 DEGREES.

SET RECORD FOR NUMBER OF DAYS WITH MINIMUM TEMPERATURE GREATER THAN
OR EQUAL TO 85 DEGREES.

SET RECORD FOR NUMBER OF DAYS WITH MINIMUM TEMPERATURE GREATER THAN
OR EQUAL TO 80 DEGREES.

2ND MOST NUMBER OF DAYS WITH MINIMUM TEMPERATURE GREATER THAN OR
EQUAL TO 75 DEGREES.

SET OR TIED 8 RECORD HIGH TEMPERATURES.
SET OR TIED 7 RECORD HIGH MINIMUM TEMPERATURES INCLUDING THE WARMEST
MINIMUM EVER RECORDED (86 DEGREES ON 07/25).

8TH DRIEST ON RECORD.

AUGUST...

SET ONE DAILY RAINFALL RECORD.

SEPTEMBER...

1ST MONTH WITH BELOW NORMAL AVERAGE TEMPERATURE SINCE SEPTEMBER 2011.

OCTOBER...

SET 1 LOW MAXIMUM TEMPERATURE RECORD. FIRST DAILY COLD RECORD OF ANY KIND
SINCE RECORD LOW HIGH OBSERVED ON 07/18/2009.

SET 2 HIGH MINIMUM TEMPERATURE RECORDS.

NOVEMBER...

SET 1 RECORD HIGH TEMPERATURE.
3RD CONSECUTIVE MONTH WITH BELOW NORMAL AVERAGE TEMPERATURE. FIRST TIME
SINCE WINTER (DEC - FEB) OF 2010-2011.

TIED LEAST SNOWIEST ON RECORD (0.0 INCHES).

DECEMBER...

TIED 8TH WARMEST ON RECORD.
SET 1 RECORD HIGH TEMPERATURE.
SET 1 HIGH MINIMUM TEMPERATURE.
SET DECEMBER RECORD FOR HIGHEST WIND GUST - 67 MPH ON 20TH.


THE CLIMATE TEAM

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