Climatological Report (Monthly)
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
000 CXUS51 KCAR 021850 CLMCAR CLIMATE REPORT NATIONAL WEATHER SERVICE CARIBOU ME 249 PM EDT SAT SEP 02 2023 ................................... ...THE CARIBOU ME CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1939 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 95 08/02/1975 08/16/1944 08/14/1944 LOW 34 08/25/2003 08/31/2002 08/30/1982 HIGHEST 78 08/10 MM MM 89 08/07 LOWEST 45 08/23 MM MM 43 08/28 08/28 AVG. MAXIMUM 71.9 75.7 -3.8 76.6 AVG. MINIMUM 54.5 54.1 0.4 55.9 MEAN 63.2 64.9 -1.7 66.3 DAYS MAX >= 90 0 0.5 -0.5 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 12.09 1981 MINIMUM 0.93 1957 TOTALS 6.60 2.99 DAILY AVG. 0.21 0.12 0.09 0.12 DAYS >= .01 13 13.0 0.0 14 DAYS >= .10 9 7.5 1.5 10 DAYS >= .50 6 2.5 3.5 3 DAYS >= 1.00 1 0.6 0.4 0 GREATEST 24 HR. TOTAL 1.91 08/30 TO 08/30 1.11 08/08 TO 08/09 SNOWFALL (INCHES) RECORDS TOTAL 0.0 MM TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 MM SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 0 MM 24 HR TOTAL MM MM DEGREE DAYS HEATING TOTAL 72 71 1 38 SINCE 7/1 79 113 -34 MM COOLING TOTAL 23 68 -45 84 SINCE 1/1 304 207 97 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 5.7 HIGHEST WIND SPEED/DIRECTION 22/340 DATE 08/31 HIGHEST GUST SPEED/DIRECTION 36/330 DATE 08/31 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.59 NUMBER OF DAYS FAIR 8 NUMBER OF DAYS PC 14 NUMBER OF DAYS CLOUDY 9 AVERAGE RH (PERCENT) 77 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 6 RAIN 10 LIGHT RAIN 18 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 18 FOG W/VIS <= 1/4 MILE 4 HAZE 1 - INDICATES NEGATIVE NUMBERS. * INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. --------------------------------------------------------------------- ...NORTHERN/EASTERN MAINE AUGUST 2023 CLIMATE MONTHLY SUMMARY... AUGUST 2023 WILL BE REMEMBERED FOR COOLER THAN AVERAGE TEMPERATURES AND WELL ABOVE AVERAGE RAINFALL. AFTER THE WARMEST JULY ON RECORD IN CARIBOU AND A TOP 4 WARMEST JULY ON RECORD AT THE OTHER LONG TERM CLIMATE SITES, AUGUST WAS MUCH COOLER ACROSS THE REGION WITH TEMPERATURES THAT AVERAGED FROM 1 TO 2.5 DEGREES BELOW AVERAGE. IN CARIBOU, THERE WERE NO 80 DEGREE DAYS THE ENTIRE MONTH. THE ONLY OTHER TIME THIS HAS OCCURRED SINCE WEATHER RECORDS BEGAN IN 1939 WAS BACK IN 1972. ON AVERAGE, CARIBOU OBSERVES 8 DAYS WITH A HIGH OF 80F OR WARMER DURING THE MONTH OF AUGUST. IN BANGOR THERE WERE 7 DAYS WITH A HIGH OF 80F OR WARMER, AND THE HIGHEST TEMPERATURE ALL MONTH WAS 84F. TYPICALLY BANGOR OBSERVES 16 DAYS DURING THE MONTH OF AUGUST WITH A HIGH OF 80F OR WARMER. RAINFALL ACROSS THE REGION THIS PAST AUGUST WAS WELL ABOVE AVERAGE AND RANGED FROM 150 TO 200 PERCENT OF NORMAL, AND WAS SPREAD OUT FAIRLY EVENLY ACROSS THE MONTH. THE AUGUST 2023 TOTAL PAN EVAPORATION OF 2.38 INCHES AT CARIBOU WAS MUCH LESS THAN RAINFALL ACROSS THE REGION, MEANING SOILS BECAME INCREASINGLY MOIST. THERE WERE SOME FIELDS AT THE END OF THE MONTH THAT HAD PATCHES OF STANDING WATER. STREAMFLOWS ACROSS MOST OF THE REGION WERE ABOVE TO WELL ABOVE AVERAGE AT THE END OF THE MONTH. THERE WAS LITTLE SEVERE WEATHER IN JUNE AND JULY, AND AUGUST HAD THE MOST REPORTS OF SEVERE THUNDERSTORMS OF ANY MONTH THIS SUMMER. ON AUGUST 13TH THERE WERE SEVERAL SEVERE THUNDERSTORMS THAT KNOCKED DOWN TREES AND PRODUCED LARGE HAIL IN PORTIONS OF AROOSTOOK, PISCATAQUIS, AND PENOBSCOT COUNTIES. THE CLIMATE PREDICTION CENTER`S OUTLOOK FOR THE MONTH OF SEPTEMBER 2023 INDICATES THAT THE ODDS ARE SLIGHTLY TILTED TOWARD ABOVE AVERAGE TEMPERATURES. THERE ARE NO STRONG SIGNALS THAT WOULD POINT TOWARD ABOVE OR BELOW AVERAGE PRECIPITATION. AVERAGE HIGH TEMPERATURES ARE IN THE LOW TO MID 70S AT THE START OF THE MONTH AND DROP TO THE LOW TO MID 60S BY THE END OF THE MONTH. AVERAGE LOWS DROP FROM THE LOW 50S EARLY IN THE MONTH TO THE LOW 40S BY THE END OF THE MONTH. FROST BECOMES AN INCREASING THREAT DURING THE MONTH OF SEPTEMBER, ESPECIALLY ACROSS THE NORTHERN VALLEYS DURING THE SECOND HALF OF THE MONTH. ALTHOUGH VERY RARE, SNOW HAS BEEN OBSERVED ACROSS FAR NORTHERN PORTIONS OF THE REGION LATE IN THE MONTH. THE CHANCES OF SEVERE THUNDERSTORMS DROPS OFF RAPIDLY DURING THE MONTH. SEPTEMBER IS THE MOST LIKELY MONTH FOR THE REGION TO BE AFFECTED BY A TROPICAL SYSTEM OR THE REMAINS OF A TROPICAL SYSTEM. $$ CB/VJN