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Climatological Report (Annual)
Issued by NWS Duluth, MN

000
CXUS53 KDLH 040253
CLAINL

CLIMATE REPORT
NATIONAL WEATHER SERVICE DULUTH MN
853 PM CST TUE JAN 3 2012


...THE INTERNATIONAL FALLS MN CLIMATE SUMMARY FOR THE YEAR OF 2011...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2011

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             103   07/22/1923
 LOW              -55   01/06/1909
HIGHEST            93   07/18                         89  08/09
LOWEST            -46   01/21                        -38  01/04
AVG. MAXIMUM     50.0              48.8     1.2     51.2
AVG. MINIMUM     26.3              26.2     0.1     27.4
MEAN             38.1              37.5     0.6     39.3
DAYS MAX >= 90      2               2.9    -0.9        0
DAYS MAX <= 32    102             102.6    -0.6       91
DAYS MIN <= 32    198             198.2    -0.2      180
DAYS MIN <= 0      53              58.8    -5.8       55

PRECIPITATION (INCHES)
RECORDS
 MAXIMUM        34.35   1941
 MINIMUM        16.85   2003
TOTALS          19.71             24.22   -4.51    32.76
DAILY AVG.       0.05              0.07   -0.02     0.09
DAYS >= .01       118             128.0   -10.0      130
DAYS >= .10        47              54.9    -7.9       66
DAYS >= .50        12              12.9    -0.9       18
DAYS >= 1.00        3               3.4    -0.4        5
GREATEST
 24 HR. TOTAL    1.32   06/26                            3.04  07/01
                        06/27


SNOWFALL (INCHES)
RECORDS
 MAXIMUM        131.8   1992
 MINIMUM         25.9   1973
 24 HR TOTAL     14.1   01/10/1975
 SNOW DEPTH        38   01/27/1982
TOTALS           59.4              71.0   -11.6     63.1
SINCE 7/1        20.8              31.0   -10.2     47.7
SNOWDEPTH AVG.      5                                  5
DAYS >= TRACE      97              58.9    38.1       71
DAYS >= 1.0        20              22.2    -2.2
GREATEST
 SNOW DEPTH        30   01/29                         21  12/31
                        01/28                             02/24
                                                          02/23
 24 HR TOTAL      7.3   04/16                        7.1  11/21
                        04/17                         TO  11/22

DEGREE_DAYS
HEATING TOTAL    9870             10222    -352     9421
 SINCE 7/1       3549              4175    -626     3981
COOLING TOTAL     207               193      14      207
 SINCE 1/1        207               192      15      207

FREEZE DATES
RECORD
 EARLIEST     08/20/1907
 LATEST       07/11/1911
EARLIEST                        09/05
LATEST                          06/09
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.6
RESULTANT WIND SPEED/DIRECTION   1/268
HIGHEST WIND SPEED/DIRECTION    39/300    DATE  07/04
HIGHEST GUST SPEED/DIRECTION    54/290    DATE  07/04

SKY COVER
AVERAGE SKY COVER        0.40

AVERAGE RH (PERCENT)     72

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

$$

.THE CALENDAR YEAR OF 2011 WAS WARMER AND DRIER THAN NORMAL AT INTERNATIONAL
FALLS MN...

THE AVERAGE TEMPERATURE FOR THE YEAR WAS 38.1 DEGREES WHICH WAS 0.6 DEGREES
ABOVE THE NORMAL OF 37.5 DEGREES TYING THIS FOR THE 21ST WARMEST CALENDAR
YEAR ON RECORD.

19.71 INCHES OF LIQUID EQUIVALENT PRECIPITATION WAS RECORDED FOR THE YEAR.
THIS IS 4.51 INCHES BELOW THE NORMAL OF 24.22 MAKING THIS THE 13TH DRIEST
CALENDAR YEAR ON RECORD. 59.4 INCHES OF SNOW FELL FOR THE YEAR WHICH WAS
11.6 INCHES BELOW THE NORMAL OF 70.0 INCHES MAKING THIS THE 27TH LEAST
SNOWIEST CALENDAR YEAR IN STATION HISTORY.

$$

KK