Climatological Report (Monthly)
Issued by NWS Portland, ME

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
000
CXUS51 KGYX 012144
CLMCON

PWMCLMCON 000
TTAA00 GYX 011743

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
143 PM EDT WED NOV 01 2023

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1868 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             92   10/16/1879
 LOW              10   10/21/1972
                       10/24/1969
HIGHEST           86   10/03         79       7       78  10/07
LOWEST            28   10/31         21       7       26  10/29
                                                          10/30
AVG. MAXIMUM    65.6               60.9     4.7     63.3
AVG. MINIMUM    43.1               37.8     5.3     37.1
MEAN            54.4               49.3     5.1     50.2
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     2               11.2    -9.2       11
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       14.57   2005
 MINIMUM        0.05   1924
TOTALS          2.67               4.43   -1.76     2.74
DAILY AVG.      0.09               0.14   -0.05     0.09
DAYS >= .01       10               10.6    -0.6       10
DAYS >= .10        5                6.8    -1.8        7
DAYS >= .50        2                2.8    -0.8        2
DAYS >= 1.00       1                1.3    -0.3        0
GREATEST
 24 HR. TOTAL   1.17   10/21 TO 10/22

SNOWFALL (INCHES)
RECORDS
 TOTAL          23.0   2011
TOTALS           0.0                0.8    -0.8      0.0
SINCE 7/1        0.0                0.8    -0.8      0.0
SNOWDEPTH AVG.     0
DAYS >= TRACE      0                0.2    -0.2        0
DAYS >= 1.0        0                0.1    -0.1        0
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL       0

DEGREE DAYS
HEATING TOTAL    328                488    -160      451
 SINCE 7/1       459                679    -220      606
COOLING TOTAL      4                  3       1        0
 SINCE 1/1       574                528      46      646
................................................................

WIND (MPH)
AVERAGE WIND SPEED              3.8
HIGHEST WIND SPEED/DIRECTION    21/320    DATE  10/15
HIGHEST GUST SPEED/DIRECTION    32/260    DATE  10/28

SKY COVER
AVERAGE SKY COVER           0.57

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 1
RAIN                      5     LIGHT RAIN                14
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     FOG                       21
FOG W/VIS <= 1/4 MILE     7     HAZE                       0

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

&&

A BROAD RIDGE OF HIGH PRESSURE ALONG THE EAST COAST DOMINATED THE
WEATHER THROUGH THE FIRST WEEK OF OCTOBER. THIS BROUGHT A PERIOD OF
DRY AND VERY WARM CONDITIONS TO THE CONCORD AREA. THE RIDGE BROKE
DOWN BY THE END OF THE FIRST WEEK WITH A FRONTAL SYSTEM CROSSING THE
AREA BRINGING RAIN AND MUCH COOLER TEMPERATURES. AN UPPER LOW
LINGERED NEAR NEW ENGLAND THROUGH MUCH OF THE SECOND WEEK OF THE
MONTH KEEPING TEMPERATURES NEAR NORMAL WITH SHOWERY WEATHER.
ADDITIONAL UPPER LOWS AND TROUGHS CROSSED THE NORTHEAST THROUGH THE
THIRD WEEK OF THE MONTH LIMITING ANY SIGNIFICANT WARM UPS, ALTHOUGH
CONDITIONS WERE MOSTLY DRY WITH ONLY A COUPLE LIGHT RAIN EVENTS. A
MORE SIGNIFICANT SYSTEM IMPACTED THE CONCORD AREA THE WEEKEND OF THE
21ST INTO THE 22ND AS LOW PRESSURE TRACKED ACROSS SOUTHERN NEW
ENGLAND INTO THE GULF OF MAINE BRINGING A SOAKING RAIN. COOLER AIR
ARRIVED BEHIND THIS SYSTEM LEADING TO THE CONCORD AREA DROPPING
BELOW THE FREEZING MARK FOR THE FIRST TIME THIS FALL WHEN THE LOW
TEMPERATURE REACHED 30 DEGREES ON THE 24TH. A WARM UP ENSUED THE
FINAL WEEK OF THE MONTH FOLLOWED BY ANOTHER LOW PRESSURE SYSTEM
BRINGING RAIN AND A SHOT OF MUCH COLDER AIR TO CLOSE OUT THE MONTH.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 54.4 DEGREES, WHICH WAS
5.1 DEGREES ABOVE NORMAL AND THE 7TH WARMEST OCTOBER ON RECORD. THE
WARMEST OCTOBER ON RECORD WAS IN 1879 WHEN THE AVERAGE TEMPERATURE
WAS 57.6 DEGREES. THE COOLEST WAS 42.2 DEGREES IN 1925. THE
FOLLOWING TABLE LISTS THE WARMEST OCTOBERS ON RECORD AT CONCORD.

WARMEST AVERAGE TEMPERATURE IN OCTOBER (SINCE 1868)...
RANK  TEMP  YEAR
1     57.6  1879
2     56.9  2017
3     55.3  1878
4     55.1  1947
5     55.0  1920
6     54.8  2021
7     54.4  2023  <===
8     54.1  2007
9     53.9  1938
10    53.8  1963

A TOTAL OF 2.67 INCHES OF PRECIPITATION FELL, WHICH WAS 1.76 INCHES
BELOW NORMAL. THE DRIEST OCTOBER ON RECORD WAS IN 1924 WHEN ONLY
0.05 INCHES OF PRECIPITATION FELL. THE WETTEST WAS 14.57 INCHES IN
2005.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN OCTOBER 2023...
DATE    RECORD                                 PREVIOUS
OCT  4    84   - WARMEST HIGH TEMPERATURE      84 IN 1931 (TIED)
OCT 28    80   - WARMEST HIGH TEMPERATURE      78 IN 1947

$$

DS


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.