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Climatological Report (Annual)
Issued by NWS
Issued by NWS
752
CXUS54 KLZK 020306
CLALIT
CLIMATE REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
901 PM CST MON JAN 1 2018
...................................
...THE LITTLE ROCK ADAMS FIELD CLIMATE SUMMARY FOR THE YEAR OF 2017...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2017
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 114 08/03/2011
LOW -12 02/12/1899
HIGHEST 96 07/23 73 23 105 07/22
07/21
07/22
LOWEST 12 01/07 52 -40 12 12/19
AVG. MAXIMUM 74.0 72.9 1.1 75.3
AVG. MINIMUM 53.2 52.5 0.7 55.1
MEAN 63.6 62.7 0.9 65.2
DAYS MAX >= 90 46 69.2 -23.2 94
DAYS MAX <= 32 4 4.0 0.0 1
DAYS MIN <= 32 39 50.6 -11.6 45
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 81.79 2009
MINIMUM 28.26 1963
TOTALS 47.27 49.75 -2.48 56.12
DAILY AVG. 0.13 0.14 -0.01 0.15
DAYS >= .01 103 105.7 -2.7 105
DAYS >= .10 71 71.1 -0.1 77
DAYS >= .50 32 33.3 -1.3 31
DAYS >= 1.00 13 14.4 -1.4 17
GREATEST
24 HR. TOTAL 5.11 04/29 TO 04/30
SNOWFALL (INCHES)
RECORDS
TOTAL 32.6 1960
24 HR TOTAL 13.0 01/17/1893 TO 01/18/1893
SNOW DEPTH 15 01/21/1918
TOTALS 0.2 3.5 -3.3 5.7
LIQUID EQUIV 0.02 0.40 -0.38 0.57
SINCE 7/1 T 0.2 -0.2 T
LIQUID 7/1 MM MM MM MM
SNOWDEPTH AVG. 0 T 0 0
DAYS >= TRACE 2 1.7 0.3 5
DAYS >= 1.0 0 0.9 -0.9 1
GREATEST
SNOW DEPTH T 01/06 6 01/22
24 HR TOTAL 0.2 01/06 TO 01/06
DEGREE_DAYS
HEATING TOTAL 2427 3053 -626 2465
SINCE 7/1 MM 1197 MM MM
COOLING TOTAL 2028 2206 -178 2652
SINCE 1/1 2028 2206 -178 2652
FREEZE DATES
RECORD
EARLIEST 10/20/1989
LATEST 04/19/1983
EARLIEST 11/13
LATEST 03/19
...................................................
WIND (MPH)
AVERAGE WIND SPEED 7.3
HIGHEST WIND SPEED/DIRECTION 37/320 DATE 07/08
HIGHEST GUST SPEED/DIRECTION 52/190 DATE 02/07
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.60
NUMBER OF DAYS FAIR 112
NUMBER OF DAYS PC 130
NUMBER OF DAYS CLOUDY 123
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 37 RAIN 66
LIGHT RAIN 134 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 1
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 1
FOG 149 FOG W/VIS <= 1/4 MILE 24
HAZE 8
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...A Review of 2017 Weather And Climate Data for Little Rock Adams
Field...
Summary
====================================================================
At Little Rock, 2017 was the coolest year in three years.
In terms of departure from normal, the warmest months (relative to
average) were February and January, and the coolest month was August. By
the actual temperatures, though, December was the coolest and July was
the warmest.
There were no 100-degree days for the first time in three years. Not only
that, the first 90-degree day came in mid-June, and was the latest such
occurrence in 78 years (and 6th latest on record). There were only 39 days
with lows at or below freezing, which was the least in five years.
For the first time in three years, annual rainfall was below average. The
wettest months were April and December, and the driest months were all
during the fall...November, September and October. Rainfall for these
months ranged from over two to nearly five inches below average.
Snowfall was significantly below average, with the least amount in eight
years. However, this is the 16th straight year with measurable snowfall
(even if it was not much). The only measurable snow fell on January 6th.
This was also the year which saw the earliest snowfall on record at
Little Rock, when a trace of sleet fell on October 27th. Otherwise, no
other snowfall or hail was recorded during the year.
Below are averages and extremes observed during the year. Remember...most
of the data below is preliminary until certified correct by the National
Center for Environmental Information in Asheville, North Carolina.
Temperatures
===========================================================================
----------| Average Temperatures |--------Extremes and Dates---------|
---------------------------------------------------------------------------
Month | High Low Average DFN | Highest/Date(s) | Lowest/Date(s) |
---------------------------------------------------------------------------
January | 55.1 37.3 46.2 +5.4 | 75/31st, 12th | 12/7th |
---------------------------------------------------------------------------
February | 64.3 42.1 53.2 +8.4 | 81/28th | 24/4th |
---------------------------------------------------------------------------
March | 68.1 44.6 56.4 +3.0 | 86/21st | 18/15th |
---------------------------------------------------------------------------
April | 75.7 53.8 64.8 +2.7 | 85/29th | 42/7th |
---------------------------------------------------------------------------
May | 79.7 58.5 69.1 -2.0 | 89/27th | 46/2nd |
---------------------------------------------------------------------------
June | 86.0 67.0 76.5 -2.6 | 92/16th | 57/9th |
---------------------------------------------------------------------------
July | 91.4 72.1 81.8 -1.0 | 96/23rd,22nd,21st| 66/31st, 30th |
---------------------------------------------------------------------------
August | 86.0 70.5 78.3 -4.2 | 95/20th | 63/25th |
---------------------------------------------------------------------------
September | 85.6 64.1 74.9 -0.1 | 93/22nd | 53/7th |
---------------------------------------------------------------------------
October | 76.5 51.5 64.0 +0.3 | 91/9th | 28/29th |
---------------------------------------------------------------------------
November | 67.0 43.3 55.2 +2.6 | 85/3rd | 29/23rd, 20th |
---------------------------------------------------------------------------
December | 52.7 33.4 43.0 0.0 | 73/3rd | 15/28th |
===========================================================================
= Year | 74.0 53.2 63.6 +0.9 | 96 Jul. 23rd, | 12 Jan. 7th =
= | | Jul. 22nd, | =
= | | Jul. 21st, | =
= | | Jul. 20th | =
===========================================================================
DFN - Departure from normal, or difference between the average temperature
and the 30-year average temperature (1981-2010)
Precipitation
===================================================================
Monthly Rainfall Data | Highest Totals |
--------------------------|----------------------------------------
Month | Total | DFN | Calendar Day | 24-hour Period |
-------------------------------------------------------------------
January | 1.47 | -2.08 | 0.51/16th | 0.51/16th |
-------------------------------------------------------------------
February | 3.53 | -0.13 | 1.11/20th | 1.66/20th-21st |
-------------------------------------------------------------------
March | 3.87 | -0.81 | 1.27/7th | 1.51/6th-7th |
-------------------------------------------------------------------
April | 10.13 | +4.99 | 2.78/29th | 5.11/29th-30th |
-------------------------------------------------------------------
May | 6.82 | +1.95 | 2.07/28th | 2.07/28th |
-------------------------------------------------------------------
June | 3.24 | -0.41 | 0.71/22nd | 0.92/22nd-23rd |
-------------------------------------------------------------------
July | 4.76 | +1.49 | 1.13/23rd | 1.13/23rd |
-------------------------------------------------------------------
August | 3.47 | +0.88 | 0.75/18th | 0.86/30th-31st |
-------------------------------------------------------------------
September | 0.45 | -2.73 | 0.33/5th | 0.33/5th |
-------------------------------------------------------------------
October | 1.37 | -3.54 | 0.49/22nd | 0.53/21st-22nd |
-------------------------------------------------------------------
November | 0.42 | -4.86 | 0.32/15th | 0.32/15th |
-------------------------------------------------------------------
December | 7.74 | +2.77 | 4.33/22nd | 4.35/22nd-23rd |
===================================================================
=Yearly | 47.27 | -2.48 | 4.33 Dec. 22nd| 5.11 Apr. 29th-30th=
===================================================================
============================================================================
Monthly Snowfall Data | |
(Snow, Sleet, and Hail) | Highest Totals |
----------------------------------------------------------------------------
Month | Total | DFN | Avg. Depth | Calendar Day | 24-hour Period |
-------------------------|-------------|------------------------------------
January | 0.2 | -1.4 | 0.0 | 0.2/6th | 0.2/6th |
----------------------------------------------------------------------------
February | 0.0 | -1.3 | 0.0 | | |
----------------------------------------------------------------------------
March | 0.0 | -0.4 | 0.0 | | |
----------------------------------------------------------------------------
April | 0.0 | 0.0 | 0.0 | | |
----------------------------------------------------------------------------
October | T | 0.0 | 0.0 | T/27th | T/27th |
----------------------------------------------------------------------------
November | 0.0 | 0.0 | 0.0 | | |
----------------------------------------------------------------------------
December | 0.0 | -0.2 | 0.0 | | |
============================================================================
=Yearly | 0.2 | -3.3 | 0.0 | 0.2 Jan. 6th | 0.2 Jan. 6th =
============================================================================
Summary By Month
==========================================================================
Monthly Averages | | | | |
Temperatures & | Warmest | Coolest | Most | Least | Monthly/Yearly
Precipitation | Since | Since | Since | Since | Rank on Record
---------------------------------------------------------------------------
January | | | | |
Average High | 2012 | | | |
Average Low | 2006 | | | |
Average Monthly | 2012 | | | |
Rainfall | | | | 2011 |
Snowfall | | | | 2015 |
---------------------------------------------------------------------------
February | | | | |
Average High | 1976 | | | | 2nd Warmest
Average Low | 1957 | | | | 9th Warmest
Average Monthly | 1932 | | | | 4th Warmest
Rainfall | | | 2015 | |
Snowfall | | | | 2016 |
---------------------------------------------------------------------------
March | | | | |
Average High | | 2015 | | |
Average Low | | 2015 | | |
Average Monthly | | 2015 | | |
Rainfall | | | | 2010 |
Snowfall | | | | 2016 |
---------------------------------------------------------------------------
April | | | | |
Average High | 2012 | | | |
Average Low | | 2014 | | |
Average Monthly | 2012 | | | |
Rainfall | | | 1991 | | 13th Wettest
Snowfall | | | | |
---------------------------------------------------------------------------
May | | | | |
Average High | | 2013 | | |
Average Low | | 2005 | | |
Average Monthly | | 2002 | | |
Rainfall | | | 2015 | |
---------------------------------------------------------------------------
June | | | | |
Average High | | 2004 | | |
Average Low | | 2003 | | |
Average Monthly | | 2003 | | |
Rainfall | | | 2014 | |
---------------------------------------------------------------------------
July | | | | |
Average High | | 2014 | | |
Average Low | | 2014 | | |
Average Monthly | | 2014 | | |
Rainfall | | | | 2015 |
---------------------------------------------------------------------------
August | | | | |
Average High | | 1950 | | | 10th Coolest
Average Low | | 2009 | | |
Average Monthly | | 2004 | | |
Rainfall | | | | 2015 |
---------------------------------------------------------------------------
September | | | | |
Average High | | 2012 | | |
Average Low | | 2011 | | |
Average Monthly | | 2011 | | |
Rainfall | | | | 2015 | 9th Driest
---------------------------------------------------------------------------
October | | | | |
Average High | | 2013 | | |
Average Low | | 2012 | | |
Average Monthly | | 2013 | | |
Rainfall | | | | 2011 |
Snowfall | | | 1993 | |***Snowiest
---------------------------------------------------------------------------
November | | | | |
Average High | 2001 | | | | 6th Warmest
Average Low | | 2014 | | |
Average Monthly | 2015 | | | |
Rainfall | | | | 1999 | 5th Driest
Snowfall | | | | |
---------------------------------------------------------------------------
December | | | | |
Average High | 2015 | | | |
Average Low | | 2013 | | |
Average Monthly | | 2013 | | |
Rainfall | | | 2015 | |
Snowfall | | | | 2015 |
============================================================================
Yearly | | | | |
Average High | | 2014 | | |
Average Low | | 2014 | | |
Average Monthly | | 2014 | | |
Rainfall | | | | 2012 |
Snowfall | | | | 2009 |
============================================================================
First and Last Dates Dates Notes
=========================================================
Last Freeze | March 15th | Latest since 2015
First 80-degree Day | February 7th | Earliest since 2002
First 90-degree Day | June 14th | Latest since 1939
Last 90-degree Day | October 14th | Latest since 2015
Last 80-degree Day | November 5th | Earliest since 2014
First Freeze | October 28th | Earliest since 1989
=========================================================
Number of Days With Temperatures Notes
=======================================================
At or below freezing | 39 | Least since 2012
At or above 90 degrees | 46 | Least since 2004
At or above 100 degrees | 0 | Least since 2014
=======================================================
Daily Record Temperatures Tied or Broken During the Year
============================================================================
Date Record Type New Record Previous Record
============================================================================
Feb. 7th High Temperature 80 in 2017 78 in 1937
Feb. 11th High Temperature 79 in 2017 78 in 1922
Warmest Low Temperature 63 in 2017 59 in 1880
Mar. 21st High Temperature 86 in 2017 86 in 1916, 1907
May 27th Warmest Low Temperature 74 in 2017 74 in 1953
Aug. 13th Coolest High Temperature 78 in 2017 78 in 1964, 1917
Sep. 12th Coolest High Temperature 66 in 2017 67 in 2014
Oct. 28th Low Temperature 31 in 2017 31 in 1957
Oct. 29th Low Temperature 28 in 2017 31 in 1910
Nov. 2nd High Temperature 83 in 2017 83 in 1961
Nov. 3rd High Temperature 85 in 2017 83 in 2012, 1909
Nov. 5th Warmest Low Temperature 69 in 2017 65 in 1977
Additional Information and Honorable Mention...
May 4th - The high temperature of 56 degrees was the 8th coolest high
temperature on record in the month of May.
Oct. 28th - The low temperature of 31 degrees most recently tied the 8th
coldest on record for the month. This was also the earliest freeze
at Little Rock since 1989, and was the 8th earliest freeze on
record. Also, The daily average temperature of 41.0 was the coldest
during the month since 1993, and most recently tied October 29, 1913 for
the 7th coldest on record.
Oct. 29th - The low temperature of 28 degrees marked the coldest temperature
in the month of October at Little Rock since 1917, and the 2nd coldest on
record during the month. Only October 30, 1917 was colder (low of 27).
Oct. 31st - The high temperature of 49 degrees marked the coldest daily
high temperature at Little Rock during the month of October since 1993,
and most recently tied October 22, 1937 for the 10th coldest on record.
Nov. 2nd = The high temperature of 85 degrees most recently tied November
11, 1989 for the 2nd warmest temperature on record for the month of November.
Nov. 5th - The low temperature of 69 degrees most recently tied November 14,
2011 for the 2nd warmest low temperature on record for the month of November.
Also, the daily average temperature of 74.5 degrees most recently tied
November 1, 1982 for the 4th warmest daily average temperature on record
for the month of November.
Daily Record Rainfall Tied or Broken During the Year
====================================================
Date New Record Previous Record
====================================================
Dec. 22n 4.33 in 2017 2.54 in 1941
Honorable mention...
Apr. 29th-30th - The 24-hour rainfall total of 5.11 inches marked the 6th
highest 24-hour rainfall total on record for the month of April at Little
Rock.
Dec. 22nd - The 4.33 inches of rain that fell marked the wettest
December day at Little Rock since 2009, and the 6th wettest calendar
day on record for the month.
Daily Record Snowfall Tied or Broken During the Year
====================================================
DATE NEW RECORD OLD RECORD
====================================================
Oct. 27th Trace in 2017 NONE - Record Established
Monthly Records Tied or Broken During the Year
============================================================================
Month Record Type New Record/Date Previous Record/Date
============================================================================
Oct. Snowiest Calendar Day Trace Oct. 27, 2017 Trace Oct. 30, 1993,
Oct. 29, 1993,
Oct. 30, 1925,
Oct. 28, 1925
Oct. Snowiest 24-hour Period Trace Oct. 27, 2017 Trace Oct. 30, 1993,
Oct. 29, 1993,
Oct. 30, 1925,
Oct. 28, 1925
Other Records Broken During the Year/Miscellaneous Phenomena
=============================================================================
Feb. 7th - A strong thunderstorm produced a 52 MPH wind gust at Little Rock
Adams Field.
$$
57
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