177  
CXUS53 KMQT 291416 AAD  
CLMMQT  
 
CLIMATE REPORT...FINAL  
NATIONAL WEATHER SERVICE MARQUETTE MI  
1017 AM EDT SAT APR 29 2017  
   
...............................
 
 
   
..THE MARQUETTE MI CLIMATE SUMMARY FOR THE MONTH OF MARCH 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1961 TO 2017  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 81 03/21/2012  
LOW -30 03/03/2003  
HIGHEST 52 03/28 33 19 61 03/12  
LOWEST -13 03/04 14 -27 -11 03/03  
AVG. MAXIMUM 32.3 34.7 -2.4 39.2  
AVG. MINIMUM 16.3 13.8 2.5 19.5  
MEAN 24.3 24.2 0.1 29.3  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 16 12.8 3.2 10  
DAYS MIN <= 32 30 29.2 0.8 27  
DAYS MIN <= 0 3 4.4 -1.4 4  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 6.08 1979  
MINIMUM 0.28 2010  
TOTALS 1.84 3.03 -1.19 3.34  
DAILY AVG. 0.06 0.10 -0.04 0.11  
DAYS >= .01 17 14.5 2.5 12  
DAYS >= .10 7 7.2 -0.2 6  
DAYS >= .50 1 1.4 -0.4 3  
DAYS >= 1.00 0 0.6 -0.6 1  
GREATEST  
24 HR. TOTAL 0.52 03/01 TO 03/01  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 83.1 2002  
TOTALS 19.9 34.9 -15.0 18.8  
SINCE 7/1 141.0 187.3 -46.3 118.9  
SNOWDEPTH AVG. 9 21 -12 12  
DAYS >= 1.0 6 7.2 -1.2 6  
GREATEST  
SNOW DEPTH 16 03/03 25 03/06  
03/05  
24 HR TOTAL 6.2 03/01 TO 03/01  
 
DEGREE_DAYS  
HEATING TOTAL 1252 1263 -11 1096  
SINCE 7/1 6936 7887 -951 6863  
COOLING TOTAL 0 0 0 0  
SINCE 1/1 0 0 0 0    
.............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED MM  
HIGHEST WIND SPEED/DIRECTION MM DATE MM  
HIGHEST GUST SPEED/DIRECTION 52/225 DATE 03/07  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER MM  
NUMBER OF DAYS FAIR MM  
NUMBER OF DAYS PC MM  
NUMBER OF DAYS CLOUDY MM  
 
AVERAGE RH (PERCENT) MM  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 1  
HEAVY RAIN 0 RAIN 1  
LIGHT RAIN 8 FREEZING RAIN 0  
LT FREEZING RAIN 8 HAIL 1  
HEAVY SNOW 0 SNOW 4  
LIGHT SNOW 20 SLEET 2  
FOG 8 FOG W/VIS <= 1/4 MILE 3  
HAZE 0  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
   
..MARCH 2017 MONTHLY CLIMATE SUMMARY FOR UPPER MICHIGAN
 
 
/THIS DISCUSSION DOES NOT INCLUDE CHIPPEWA AND MACKINAC COUNTIES/  
   
..BELOW NORMAL SNOWFALL
 
   
..EIGHTH LOWEST MARCH SNOWFALL AT IRONWOOD
 
 
   
..BELOW NORMAL PRECIPITATION AT MOST PLACES
 
 
   
..NEAR TO SLIGHTLY BELOW NORMAL MONTHLY AVERAGE TEMPERATURE
 
 
MARCH CLIMATE STATISTICS FOR THE MARQUETTE NWS IN NEGAUNEE TOWNSHIP  
 
NORMAL DEPARTURE  
AVERAGE TEMPERATURE 24.3 24.2 PLUS 0.1  
AVERAGE HIGH TEMPERATURE 32.3 34.7 MINUS 2.4  
AVERAGE LOW TEMPERATURE 16.3 13.8 PLUS 2.5  
HEATING DEGREE DAYS 1252 1263 MINUS 11  
COOLING DEGREE DAYS 0 0 0  
TOTAL PRECIPITATION 1.84 3.03 MINUS 1.19  
TOTAL SNOWFALL 19.9 34.9 MINUS 15.0  
 
HIGHEST TEMPERATURE: 52 ON 3/28  
LOWEST TEMPERATURE: -13 ON 3/4  
GREATEST CALENDAR DAY PRECIPITATION: 0.52 ON 3/1  
GREATEST 24 HOUR PRECIPITATION: 0.52 ON 3/1  
GREATEST CALENDAR DAY SNOWFALL: 6.2 ON 3/1  
GREATEST 24 HOUR SNOWFALL: 6.2 ON 3/1  
GREATEST SNOW DEPTH: 16 ON 3/3  
PEAK WIND SPEED: 52 MPH FROM THE SOUTHWEST ON 3/7  
 
NO NEW DAILY OR MONTHLY RECORDS ESTABLISHED IN MARCH 2017  
---------------------------------------------------------------------  
...AUGUST THROUGH MARCH VERY WARM AT THE MARQUETTE NWS...  
 
AVERAGE TEMPERATURE  
 
OBSERVED NORMAL DEPARTURE RECORD RANK  
MARQUETTE NWS 36.8 33.3 +3.5 38.5 /2011-12/ 3RD WARMEST  
---------------------------------------------------------------------  
GREAT LAKES WATER LEVELS (FEET/METERS ABOVE MEAN SEA LEVEL)  
 
LAKE SUPERIOR LAKE MICHIGAN-HURON  
03/01/17 DAILY MEAN 601.79/183.43 579.10/176.51  
03/31/17 DAILY MEAN 601.60/183.37 579.25/176.56  
AVG FEB 2017 DAILY MEAN 601.80/183.43 578.99/176.47  
AVG MAR 2016 DAILY MEAN 601.91/183.46 579.42/176.61  
LONG TERM MAR DAILY MEAN 601.15/183.23 578.41/176.30  
MAXIMUM MAR DAILY MEAN 602.40/183.61 581.10/177.12  
(1986) (1986)  
MINIMUM MAR DAILY MEAN 599.54/182.74 576.05/175.58  
(1926) (1964)  
   
..WATER LEVELS REMAIN ABOVE NORMAL IN MARCH
 
 
EVEN THOUGH THE OBSERVED LAKE SUPERIOR WATER LEVEL FELL AGAIN DURING  
MARCH, THE WELL ABOVE NORMAL WATER LEVELS AT THE END OF LAST  
SUMMER ENSURED THE LAKE LEVEL REMAINED ABOVE AVERAGE THROUGH 3/31.  
AT THE END OF MARCH, WATER LEVELS ON LAKE SUPERIOR WERE 5 TO 6  
INCHES ABOVE NORMAL BUT AROUND AN INCH LOWER THAN OBSERVED IN MARCH  
2016. THE LEVEL ON LAKES MICHIGAN AND HURON ACTUALLY ROSE THROUGH  
MARCH SO THAT AT THE END OF THE MONTH THE LEVEL WAS ABOUT 10 INCHES  
ABOVE NORMAL BUT AROUND AN INCH LOWER THAN IN MARCH 2016.  
 
DUE TO THE OVERALL WINTER WARMTH ACROSS THE UPPER GREAT LAKES, ICE  
COVER ON LAKE SUPERIOR AND LAKES MICHIGAN-HURON IN MARCH WAS  
RESTRICTED TO THE SHELTERED BAYS ALONG THE SHORES OF THESE GREAT  
LAKES. EXCEPT FOR AROUND WHITEFISH BAY, MOST OF THIS ICE MELTED LATE  
IN THE MONTH.  
 
OBTAIN GREAT LAKES WATER LEVEL DATA AS REPORTED BY THE U.S. ARMY  
CORPS OF ENGINEERS AT  
 
HTTP://WWW.LRE.USACE.ARMY.MIL/MISSIONS/GREATLAKESINFORMATION/  
GREATLAKESWATERLEVELS/CURRENTCONDITIONS.ASPX.  
---------------------------------------------------------------------  
MARCH CLIMATE HIGHLIGHTS  
 
HIGHEST REPORTED TEMPERATURE...60 AT IRON MOUNTAIN, WAKEFIELD IN  
GOGEBIC COUNTY, KENTON IN HOUGHTON  
COUNTY, AND LABRANCHE IN MENOMINEE  
COUNTY ON 3/28  
 
LOWEST REPORTED TEMPERATURE...-18 AT AMASA IN IRON COUNTY AND  
CLARKSBURG IN MARQUETTE COUNTY ON 3/4  
 
HIGHEST AVERAGE TEMPERATURE...27.6 DEGREES AT NORWAY IN DICKINSON  
COUNTY  
 
LOWEST AVERAGE TEMPERATURE...21.0 DEGREES AT HERMAN IN BARAGA COUNTY  
 
HIGHEST MONTHLY PRECIPITATION...2.69 INCHES AT GRAND MARAIS IN ALGER  
COUNTY  
 
LOWEST MONTHLY PRECIPITATION...0.77 INCH AT JACOBSVILLE IN HOUGHTON  
COUNTY  
 
HIGHEST MONTHLY SNOWFALL...22.9 INCHES AT GRAND MARAIS  
 
LOWEST MONTHLY SNOWFALL...2.3 INCHES AT IRON MOUNTAIN  
 
GREATEST MONTHLY SNOW DEPTH...39 INCHES AT GRAND MARAIS ON 3/3  
 
AS HAS BEEN THE CASE FOR THE PAST COUPLE OF MONTHS, THE MARCH 2017  
WEATHER PATTERN ACROSS THE UPPER GREAT LAKES WAS A VERY CHANGEABLE  
ONE WITH ALTERNATING BOUTS OF UNSEASONABLY COLD AND WARM WEATHER.  
SINCE THE TEMPERATURE EXTREMES TENDED TO BALANCE OUT, THE OBSERVED  
MEAN MARCH AVERAGE TEMPERATURE BETWEEN 21 AND 28 DEGREES ENDED UP  
NEAR TO A BIT BELOW NORMAL ACROSS THE UPPER PENINSULA. EVEN THOUGH  
MARCH IS TYPICALLY 8 TO 10 DEGREES WARMER THAN FEBRUARY, MARCH 2017  
ENDED UP ONLY 1 TO 3 DEGREES WARMER THAN THE MONTH BEFORE DUE TO THE  
UNSEASONABLE WARMTH OBSERVED IN FEBRUARY 2017.  
 
ALTHOUGH SOME PLACES OVER MAINLY THE SOUTHEAST PORTION OF UPPER  
MICHIGAN SAW ABOVE NORMAL PRECIPITATION IN MARCH, FEWER DEEP LOW  
PRESSURE SYSTEMS IMPACTED THE UPPER LAKES. SO MONTHLY PRECIPITATION  
ENDED UP BELOW AVERAGE AT MOST LOCATIONS. LESS THAN AN INCH OF  
LIQUID EQUIVALENT PRECIPITATION FELL IN A SWATH OVER THE WEST,  
INCLUDING ONLY 0.77 INCH AT JACOBSVILLE IN HOUGHTON COUNTY AND 0.80  
INCH AT BARAGA. THESE TOTALS ARE ABOUT TWO THIRDS OF NORMAL.  
MANISTIQUE REPORTED 2.52 INCHES OF PRECIPITATION, ABOUT 140 PERCENT  
OF THE MARCH AVERAGE, DUE TO SOME HEAVIER RAINS THAT OCCURRED IN  
THAT AREA DURING THE FOURTH WEEK OF THE MONTH. A TOTAL OF 1.34  
INCHES OF RAIN, OVER HALF THE MONTHLY PRECIPITATION TOTAL, FELL AT  
MANISTIQUE FROM LATE ON 3/23 THROUGH 3/26 AS A SERIES OF LOW  
PRESSURE SYSTEMS TRACKED ALONG A STALLED FRONT IN THE CENTRAL GREAT  
LAKES. AT SOME COLDER PLACES, THIS RAIN HAPPENED WHEN SURFACE  
TEMPERATURES WERE BELOW 32, RESULTING IN FREEZING RAIN AND SOME  
ICING.  
 
EVEN WHERE MARCH PRECIPITATION WAS ABOVE NORMAL OVER THE SOUTHEAST,  
MONTHLY SNOWFALL ENDED UP BELOW AVERAGE AT MOST PLACES ACROSS UPPER  
MICHIGAN AS THE HEAVIER PRECIPITATION FELL MAINLY AS RAIN. ONLY 2.3  
INCHES AND 5.3 INCHES FELL THE WHOLE MONTH AT IRON MOUNTAIN AND  
IRONWOOD RESPECTIVELY, ABOUT 20 PERCENT OF NORMAL AT BOTH SITES.  
THE MONTHLY SNOWFALL AT IRONWOOD WAS THE EIGHTH LOWEST MARCH TOTAL  
ON RECORD. ONE AREA THAT DID SEE NEAR NORMAL SNOW WAS EAST OF  
MARQUETTE NEAR LAKE SUPERIOR DUE TO SOME HEAVIER LAKE EFFECT SNOWS  
THAT OCCURRED DURING COLD AIR OUTBREAKS THE FIRST HALF OF MARCH.  
GRAND MARAIS IN ALGER COUNTY PICKED UP ALMOST 23 INCHES OF SNOW. ALL  
BUT 3 INCHES OF THIS TOTAL ACCUMULATED BEFORE 3/14.  
 
DURING THE FIRST ARCTIC AIR INVASION, A FEW LOCATIONS SAW THE  
MERCURY DIP TO UNDER -10 DURING THE MORNING ON 3/3 AND 3/4,  
INCLUDING THE MONTHLY MINIMUM READING OF -18 AT AMASA IN IRON COUNTY  
AND CLARKSBURG IN MARQUETTE COUNTY ON 3/4. AFTER THIS ARCTIC AIR  
RETREATED QUICKLY TO THE EAST, A SURGE OF WARMER AIR LIFTED  
TEMPERATURES INTO THE 50S AT SOME PLACES ON 3/6 AND 3/7. AT MANY  
PLACES, THIS UNSEASONABLE WARMTH RESULTED IN A COMPLETE MELTING OF  
THE WINTER SNOW PACK. THE PASSAGE OF A COLD FRONT ON 3/7 THAT CAUSED  
WIND GUSTS IN EXCESS OF 50 MPH AND EVEN AS HIGH AS 71 MPH NEAR  
GERMFASK IN SCHOOLCRAFT COUNTY ENDED THIS SPRING-LIKE WARMTH.  
 
AS ARCTIC AIR SLOWLY FILTERED INTO THE UPPER LAKES FOLLOWING SOME  
REINFORCING COLD FRONTS, HIGH TEMPERATURES ON 3/10 FAILED TO REACH  
10 AT A FEW LOCATIONS. THERE WERE MORE MINIMUM TEMPERATURE REPORTS  
OF -10 OR LOWER ON 3/14 AND 3/15 AS THE CORE OF THE COLD AIRMASS  
MOVED OVERHEAD. AFTER A SLOW MODERATION, SOME LOCATIONS SAW MAXIMUM  
TEMPERATURES CLIMB INTO THE 50S ON 3/20, 3/28, 3/29 AND 3/31. THE  
WARMEST DAY WAS ON 3/28, WHEN THE THERMOMETER REACHED 60 AT IRON  
MOUNTAIN, WAKEFIELD IN GOGEBIC COUNTY, KENTON IN HOUGHTON COUNTY,  
AND LABRANCHE IN MENOMINEE COUNTY.  
 
A LOW PRESSURE SYSTEM MOVING THROUGH THE LOWER GREAT LAKES ON 3/1  
DROPPED SOME LIGHT TO MODERATE SNOWFALL IN THE MORNING ON THAT DAY.  
MOST PLACES ACROSS THE SOUTHEAST AND NORTH CENTRAL PORTIONS OF UPPER  
MICHIGAN PICKED UP AT LEAST 2 TO 4 INCHES OF SNOW DURING THIS EVENT  
ALONG WITH 0.25 TO 0.33 INCH OF WATER EQUIVALENT PRECIPITATION.  
NEGAUNEE OVER THE HIGHER TERRAIN OF MARQUETTE COUNTY MEASURED THE  
MOST PRECIPITATION AND SNOWFALL WITH 0.55 INCH AND 7.6 INCHES  
RESPECTIVELY DURING THIS EVENT.  
 
A COLD FRONT ATTENDANT TO DEEP LOW PRESSURE MOVING THROUGH SOUTH  
CENTRAL CANADA CROSSED UPPER MICHIGAN DURING THE NIGHT ON 3/6-3/7,  
ACCOMPANIED BY SOME SHOWERS AND EVEN A FEW THUNDERSTORMS. THE MOST  
RAIN IN THE 0.25 TO 0.50 INCH RANGE FELL OVER THE EAST HALF OF THE  
U.P., INCLUDING AS MUCH AS 0.58 INCH AT MANISTIQUE. WEST WINDS  
BEHIND THE FRONTAL PASSAGE GUSTED AS HIGH AS 45 TO 55 MPH DURING THE  
EARLY MORNING HOURS ON 3/7. THE GUSTY WEST WINDS AS HIGH AS 40 TO 50  
MPH CONTINUED INTO EARLY 3/9 ON THE SOUTHERN FLANK OF THE DEEP LOW  
PRESSURE MOVING TOWARD HUDSON BAY. WHILE THE ARRIVAL OF COLDER AIR  
IN THIS STRONG FLOW CAUSED SOME LAKE EFFECT SNOW SHOWERS, SNOW  
ACCUMULATIONS FROM 3/7 INTO 3/9 WERE GENERALLY NO MORE THAN THE 4 TO  
5 INCHES THAT FELL AT PAINESDALE IN HOUGHTON COUNTY. BUT THE GUSTY  
WINDS DID CAUSE CONSIDERABLE BLOWING SNOW, ESPECIALLY AT EXPOSED  
LOCATIONS NEAR LAKE SUPERIOR.  
 
ALTHOUGH THERE WERE FREQUENT LAKE EFFECT SNOW SHOWERS ON 3/10 INTO  
3/15 DURING THE ARCTIC AIR OUTBREAK, NO MORE THAN ABOUT 4 TO 6  
INCHES ACCUMULATED DURING THIS STRETCH EVEN IN THE FAVORED SNOW  
BELTS DUE TO THE OVERALL DRYNESS OF THE COLD AIRMASS.  
 
A BAND OF SNOW AHEAD OF AN APPROACHING WARM FRONT ON 3/17 RESULTED  
IN 1 TO 3 INCHES OF SNOW ACCUMULATION AT MOST PLACES ACROSS UPPER  
MICHIGAN. SOME RAIN SHOWERS AND EVEN A FEW THUNDERSTORMS THAT FORMED  
AHEAD OF AN APPROACHING WARM FRONT CROSSED UPPER MICHIGAN AND EVEN  
DROPPED SMALL HAIL DURING THE NIGHT ON 3/19-3/20. ANY PRECIPITATION  
WAS GENERALLY NO MORE THAN 0.25 INCH. AFTER A MOSTLY SUNNY AND  
PLEASANTLY WARM FIRST DAY OF SPRING ON 3/20 FOLLOWING THE FRONTAL  
PASSAGE, A STRONG COLD FRONT SWUNG THROUGH THE UPPER LAKES ON 3/21.  
NORTH WINDS GUSTING AS HIGH AS 40 TO 50 MPH NEAR LAKE SUPERIOR  
BEHIND THE FRONT ADVECTED ENOUGH COLD AIR INTO THE AREA TO CAUSE  
SOME LAKE EFFECT SNOW SHOWERS.  
 
A PAIR OF DISTURBANCES MOVING EAST ALONG A STATIONARY FRONT  
STRETCHING FROM THE UPPER MIDWEST ACROSS THE LOWER GREAT LAKES  
BROUGHT FREEZING RAIN TO PORTIONS OF THE UPPER PENINSULA LATE ON  
3/23 INTO 3/24 AND AGAIN LATE ON 3/25 INTO 3/26. DURING THE FIRST  
EVENT, OVER 0.50 INCH OF RAIN FELL OVER THE SOUTHEAST NEAR LAKE  
MICHIGAN, WITH AS MUCH AS 0.95 INCH AT MANISTIQUE AND 0.86 INCH AT  
GARDEN CORNERS IN DELTA COUNTY. FORTUNATELY, TEMPERATURES WHERE THE  
HEAVIEST RAIN FELL WERE WARM ENOUGH TO LIMIT ICE ACCUMULATION. BUT  
AS MUCH AS A QUARTER INCH OF ICE BUILT UP ON SOME SURFACES OVER THE  
NORTH CENTRAL AND WEST. DURING THE 3/25-3/26 PERIOD, AS MUCH AS 0.25  
TO 0.40 INCH OF RAIN FELL AT SOME LOCATIONS. UP TO A TENTH OF AN  
INCH OF ICE ACCUMULATED WHERE TEMPERATURES WERE BELOW FREEZING FOR A  
TIME WHEN THE RAIN FELL FROM THE KEWEENAW TO SOUTH CENTRAL UPPER  
MICHIGAN. THERE WAS ALSO SOME LOCALLY DENSE FOG ON 3/26 INTO 3/27,  
WHEN SOME DRY AIR FOLLOWED A COLD FRONTAL PASSAGE.  
---------------------------------------------------------------------  
...AUGUST THROUGH MARCH VERY WARM AND WET ACROSS UPPER MICHIGAN...  
 
...TOP 10 WARMEST AND 25 WETTEST AT MOST PLACES...  
 
AVERAGE TEMPERATURE  
 
OBSERVED NORMAL DEPARTURE RECORD RANK  
MANISTIQUE 40.0 36.2 +3.8 39.9 /2011-12/ RECORD WARMEST  
 
HOUGHTON 38.6 34.1 +4.5 39.4 /2011-12/ 3RD WARMEST  
 
NEWBERRY 39.6 35.8 +3.8 41.0 /2011-12/ 3RD WARMEST  
 
MARQUETTE NWS 36.8 33.3 +3.5 38.5 /2011-12/ 3RD WARMEST  
 
IRON MOUNTAIN 38.9 35.1 +3.8 40.0 /2011-12/ 4TH WARMEST  
 
MUNISING 38.9 36.3 +2.6 40.1 /2011-12/ 4TH WARMEST  
 
IRONWOOD 36.4 32.8 +3.6 38.2 /2011-12/ 5TH WARMEST  
 
MARQUETTE CITY 40.6 37.6 +3.0 43.0 /1877-88/ 6TH WARMEST  
 
PRECIPITATION  
 
OBSERVED NORMAL DEPARTURE RECORD RANK  
MANISTIQUE 24.96 19.06 +5.90 30.03 /1978-79/ 4TH HIGHEST  
 
NEWBERRY 25.44 23.30 +2.14 37.39 /2001-02/ 15TH HIGHEST  
 
HOUGHTON 26.49 18.38 +8.11 36.78 /1985-86/ 18TH HIGHEST  
 
IRON MOUNTAIN 19.47 17.39 +2.08 25.64 /1995-96/ 19TH HIGHEST  
 
IRONWOOD 23.74 21.40 +2.34 31.68 /1941-42/ 25TH HIGHEST  
 
MARQUETTE CITY 22.23 18.65 +3.58 33.86 /1988-89/ ****  
 
MARQUETTE NWS 23.45 23.94 -0.49 34.61 /1985-86/ ****  
 
**** RANK NOT IN TOP 25  
---------------------------------------------------------------------  
SOME OTHER TEMPERATURE AND PRECIPITATION OBSERVATIONS ACROSS UPPER  
MICHIGAN IN MARCH 2017 INCLUDE:  
 
IRONWOOD...AVERAGE TEMPERATURE 24.6 /0.5 DEGREE BELOW NORMAL/  
PRECIPITATION 1.46 INCHES /0.52 INCH BELOW NORMAL/  
SNOWFALL 5.3 INCHES /19.6 INCHES BELOW NORMAL/  
 
WATERSMEET (GOGEBIC COUNTY)...PRECIPITATION 0.97 INCH  
SNOWFALL 3.0 INCHES  
 
GREENLAND (ONTONAGON COUNTY)...PRECIPITATION 0.78 INCH  
SNOWFALL 4.9 INCHES  
 
BERGLAND DAM (ONTONAGON COUNTY)...AVERAGE TEMPERATURE 23.1 DEGREES  
PRECIPITATION 1.65 INCHES  
SNOWFALL 9.6 INCHES  
 
HOUGHTON COUNTY...AVERAGE TEMPERATURE 25.4 /0.2 DEGREE ABOVE NORMAL/  
AIRPORT PRECIPITATION 0.97 INCH /0.59 INCH BELOW NORMAL/  
SNOWFALL 7.0 INCHES /12.2 INCHES BELOW NORMAL/  
 
ATLANTIC MINE (HOUGHTON COUNTY)...PRECIPITATION 1.37 INCHES  
SNOWFALL 11.0 INCHES  
 
PAINESDALE (HOUGHTON COUNTY)...SNOWFALL 14.8 INCHES  
 
COPPER HARBOR...AVERAGE TEMPERATURE 27.1 DEGREES  
PRECIPITATION 1.83 INCHES  
SNOWFALL 8.9 INCHES  
 
JACOBSVILLE (HOUGHTON COUNTY)...AVERAGE TEMPERATURE 23.4 DEGREES  
PRECIPITATION 0.77 INCH  
SNOWFALL 5.2 INCHES  
 
BARAGA...AVERAGE TEMPERATURE 25.6 DEGREES  
PRECIPITATION 0.80 INCH  
SNOWFALL 7.0 INCHES  
 
HERMAN (BARAGA COUNTY)...AVERAGE TEMPERATURE 21.0 DEGREES  
PRECIPITATION 1.52 INCHES  
SNOWFALL 12.6 INCHES  
 
CLARKSBURG (MARQUETTE COUNTY)...PRECIPITATION 1.02 INCHES  
SNOWFALL 5.9 INCHES  
 
BIG BAY (MARQUETTE COUNTY)...AVERAGE TEMPERATURE 26.4 DEGREES  
PRECIPITATION 1.41 INCHES  
SNOWFALL 9.6 INCHES  
 
MARQUETTE CITY...AVERAGE TEMPERATURE 27.1 /1.9 DEGREES BELOW NORMAL/  
PRECIPITATION 1.29 INCHES /0.71 INCH BELOW NORMAL/  
SNOWFALL 8.2 INCHES /13.5 INCHES BELOW NORMAL/  
 
CHATHAM (ALGER COUNTY)...AVERAGE TEMPERATURE 26.0 DEGREES  
PRECIPITATION 2.13 INCHES  
SNOWFALL 14.9 INCHES  
 
MUNISING...AVERAGE TEMPERATURE 26.3 /1.4 DEGREES BELOW NORMAL/  
PRECIPITATION 2.57 INCHES /0.48 INCH ABOVE NORMAL/  
SNOWFALL 14.9 INCHES /3.9 INCHES BELOW NORMAL/  
 
GRAND MARAIS...PRECIPITATION 2.69 INCHES  
(10 MILES SOUTH) SNOWFALL 22.9 INCHES  
 
NEWBERRY...AVERAGE TEMPERATURE 26.4 /0.4 DEGREE BELOW NORMAL/  
PRECIPITATION 1.58 INCHES /0.69 INCH BELOW NORMAL/  
SNOWFALL 11.3 INCHES /6.6 INCHES BELOW NORMAL/  
 
STAMBAUGH (IRON COUNTY)...AVERAGE TEMPERATURE 21.7 DEGREES  
PRECIPITATION 1.36 INCHES  
SNOWFALL 4.1 INCHES  
 
AMASA (IRON COUNTY)...AVERAGE TEMPERATURE 22.5 DEGREES  
PRECIPITATION 1.09 INCHES  
SNOWFALL 3.4 INCHES  
 
FORD AIRPORT...AVERAGE TEMPERATURE 27.0 DEGREES  
NEAR IRON MOUNTAIN  
 
IRON MOUNTAIN...AVERAGE TEMPERATURE 27.1 /0.8 DEGREE BELOW NORMAL/  
PRECIPITATION 1.18 INCHES /0.47 INCH BELOW NORMAL/  
SNOWFALL 2.3 INCHES /8.3 INCHES BELOW NORMAL/  
 
NORWAY (DICKINSON COUNTY)...AVERAGE TEMPERATURE 27.6 DEGREES  
PRECIPITATION 1.23 INCHES  
SNOWFALL 3.2 INCHES  
 
ESCANABA...PRECIPITATION 1.52 INCHES  
SNOWFALL 3.7 INCHES  
 
GLADSTONE (DELTA COUNTY)...PRECIPITATION 1.95 INCHES  
SNOWFALL 5.9 INCHES  
 
GARDEN CORNERS (DELTA COUNTY)...AVERAGE TEMPERATURE 26.6 DEGREES  
PRECIPITATION 2.06 INCHES  
SNOWFALL 3.9 INCHES  
 
COOKS (SCHOOLCRAFT COUNTY)...PRECIPITATION 2.58 INCHES  
SNOWFALL 8.8 INCHES  
 
MANISTIQUE...AVERAGE TEMPERATURE 26.6 /0.5 DEGREE BELOW NORMAL/  
PRECIPITATION 2.52 INCHES /0.73 INCH ABOVE NORMAL/  
SNOWFALL 6.9 INCHES /3.9 INCHES BELOW NORMAL/  
---------------------------------------------------------------------  
MAY FORECAST  
 
THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING EQUAL CHANCES OF  
AN ABOVE AND BELOW NORMAL MONTHLY MEAN TEMPERATURE BUT A GREATER  
THAN CLIMATOLOGICAL CHANCE OF BELOW NORMAL MONTHLY PRECIPITATION  
ACROSS ALL OF UPPER MICHIGAN IN MAY 2017.  
 
MAY CLIMATOLOGY  
 
MAY BRINGS A CONTINUED MODERATION IN TEMPERATURE AS DAYLIGHT  
CONTINUES TO LENGTHEN. POSSIBLE SUNSHINE INCREASES FROM 863 MINUTES  
ON 5/1 TO 932 MINUTES ON 5/31. THE AVERAGE TEMPERATURE IN MAY IS 12  
TO 13 DEGREES HIGHER THAN IN APRIL. ALTHOUGH AVERAGE HIGH  
TEMPERATURES REACH AROUND 70 BY MEMORIAL DAY OVER INLAND AREAS...  
THE RELATIVELY COLD WATERS OF THE GREAT LAKES OFTEN KEEP SHORE  
COMMUNITIES UP TO 20 DEGREES COOLER IN THE AFTERNOON. MORNING  
TEMPERATURES FREQUENTLY SLIP BELOW FREEZING AT THE BEGINNING OF  
MAY...BUT AVERAGE LOW TEMPERATURES RISE ABOVE 40 AFTER MID MONTH.  
 
THE INCREASE IN AVERAGE TEMPERATURE RESULTS IN A GREATER THREAT OF  
SHOWERS AND THUNDERSTORMS. AVERAGE PRECIPITATION IS 10 TO 40 PERCENT  
HIGHER THAN IN APRIL...WITH THE GREATEST AMOUNTS MOST LIKELY NEAR  
THE WISCONSIN BORDER WHERE THE STABILIZING INFLUENCE OF THE GREAT  
LAKES IS LESS.  
 
MAY IS GENERALLY A TEMPERATE MONTH...BUT WINTER CHILL IS STILL  
POSSIBLE. ALTHOUGH AVERAGE TEMPERATURES RISE SHARPLY...FROST OFTEN  
OCCURS AT THE END OF MAY AS RECORD LOW TEMPERATURES REMAIN BELOW  
FREEZING THE ENTIRE MONTH AT MANY LOCATIONS. NEWBERRY SAW THE  
MERCURY PLUNGE ALL THE WAY TO 19 AS LATE AS 5/24...IN 1925. MAY 1997  
GOES DOWN IN THE RECORD BOOKS AS ONE OF THE COLDEST EVER AT ALL  
REPORTING STATIONS WITH MONTHLY TEMPERATURES AS MUCH AS SEVEN TO  
EIGHT DEGREES BELOW NORMAL. IN FACT...THIS MONTH IS THE COLDEST  
FIFTH MONTH EVER AT MANISTIQUE (AVERAGE TEMPERATURE 44.4)...IRON  
MOUNTAIN (45.9) AND ONTONAGON (46.6) AS WELL AS IN THE TOP TEN  
COLDEST AT MOST OTHER UPPER MICHIGAN LOCATIONS. EVEN MORE  
RECENTLY...MAY 2002 LANDED IN THE LIST OF TOP TEN COLDEST. MONTHLY  
TEMPERATURES IN MAY 2002 AVERAGED 5 TO 7 DEGREES BELOW NORMAL AT  
MOST SITES. AT MUNISING...THE MERCURY AVERAGED 9 DEGREES BELOW  
NORMAL (41.5) AND THE MONTH GOES DOWN IN THE RECORD BOOKS AS THE  
COLDEST MAY EVER. AT STATIONS WITH A LONGER TERM RECORD...MAY 1954  
STANDS OUT AS VERY CHILLY...IN FACT THE COLDEST EVER AT THE HOUGHTON  
COUNTY AIRPORT (41.8)...WHEN MONTHLY TEMPERATURES FELL OVER EIGHT  
DEGREES BELOW NORMAL.  
 
SNOW CAN STILL PLAGUE UPPER MICHIGAN DURING MAY. A LATE SEASON  
SNOWSTORM OCCURRED IN CENTRAL UPPER MICHIGAN ON 5/9-5/10/90...WHEN  
AN IMPRESSIVE 22.4 INCHES OF HEAVY WET SNOW FELL AT THE MARQUETTE  
NWS...11 INCHES BLANKETED IRON MOUNTAIN...AND 7 INCHES FELL ON  
MUNISING. DURING THE CHILLY MAY 1997...13 INCHES OF THE WHITE STUFF  
ACCUMULATED AT ONTONAGON ON 5/12 AND 11.3 INCHES SMOTHERED IRONWOOD.  
NEWBERRY WAS STRUCK BY AN EVEN LATER MAY SNOWSTORM...10 INCHES  
ACCUMULATED THERE ON 5/23 AND 5/24 BACK IN 1917. MEASURABLE SNOW AS  
LATE AS MEMORIAL DAY IS NOT UNPRECEDENTED...IRONWOOD RECORDED 3.7  
INCHES OF SNOW ON 5/28/65.  
 
ALTHOUGH SNOW CAN STILL FALL IN MAY...SPRING HEAT WAVES CAN ALSO  
BRING MID SUMMER HEAT TO UPPER MICHIGAN. ON 5/31 IN 1934...BOTH IRON  
MOUNTAIN AND IRONWOOD RECORDED MONTHLY RECORD 100 DEGREE HIGH  
TEMPERATURES. RECORD HIGH TEMPERATURES ARE IN THE 90S EVERYWHERE BY  
MONTHS' END...EXCEPT AT MANISTIQUE WHERE A SOUTHERLY FLOW OFF LAKE  
MICHIGAN OFTEN KEEPS AFTERNOON MAXIMUM TEMPERATURES FROM GETTING AS  
HIGH AS FARTHER INLAND. MAY 1977 AND 1998 ARE THE WARMEST MAYS IN  
RECENT MEMORY. MAY 1977 IS THE WARMEST ON RECORD AT IRON MOUNTAIN  
(62.4)...THE MARQUETTE NWS (59.4)...THE HOUGHTON COUNTY AIRPORT  
(58.1) AND MUNISING (57.5). MAY 1998 GOES DOWN IN THE RECORD BOOKS  
AS THE WARMEST ON RECORD AT NEWBERRY (59.1) AND IN THE TOP FIVE  
WARMEST AT MANY OTHER PLACES. MAY 2000 SAW A VERY SUMMERLIKE WEEK IN  
THE EARLY PART OF THE MONTH...AND TEMPERATURES AVERAGED 20 DEGREES  
ABOVE NORMAL AT MANY LOCATIONS BETWEEN 5/3 AND 5/8. BARAGA SAW THE  
MERCURY REACH 90 ON 5/5/2000...AND THE MARQUETTE NWS BROKE FOUR  
DAILY RECORD HIGH TEMPERATURES DURING THAT 6-DAY STRETCH. IN FACT...  
THE WEEK BETWEEN 5/3/00 AND 5/8/00 IS THE WARMEST 6-DAY PERIOD ON  
RECORD IN EARLY MAY AT THE MARQUETTE NWS. MORE RECENTLY...MAY 2010  
FEATURED A MEAN MONTHLY AVERAGE TEMPERATURE 3 TO 5 DEGREES ABOVE  
NORMAL.  
 
OUTLOOK FOR SUMMER  
 
THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING A GREATER THAN  
CLIMATOLOGICAL CHANCE OF AN ABOVE NORMAL 3-MONTH AVERAGE TEMPERATURE  
AND BELOW NORMAL 3-MONTH PRECIPITATION ACROSS ALL OF UPPER MICHIGAN  
IN JUNE THROUGH AUGUST 2017.  
---------------------------------------------------------------------  
 
GO TO HTTP://WWW.WEATHER.GOV/CLIMATE/L3MTO.PHP TO ACCESS DETAILED  
LOCAL THREE-MONTH AVERAGE TEMPERATURE OUTLOOKS FOR A NUMBER OF SITES  
IN UPPER MICHIGAN.  
 
CHECK OUT HTTP://WWW.CPC.NCEP.NOAA.GOV FOR MORE INFORMATION ABOUT  
THE CLIMATE PREDICTION CENTER AND MORE LONG RANGE PREDICTIONS.  
 
NOTE THAT STATISTICS FOR THE NATIONAL WEATHER SERVICE OFFICE IN  
NEGAUNEE TOWNSHIP ARE BASED ON RECORDS WHICH BEGAN IN OCTOBER 1961.  
THIRTY YEAR NORMALS USED ARE FOR THE PERIOD OF 1981 THROUGH 2010.  
NOTE ALL TEMPERATURES ARE IN FAHRENHEIT AND PRECIPITATION IS IN  
INCHES. ALL CLIMATE DATA LISTED IN THIS PRODUCT ARE UNOFFICIAL. FOR  
OFFICIAL DATA...PLEASE REFER TO THE NATIONAL CLIMATIC DATA CENTER.  
ALSO NOTE THIS DISCUSSION DOES NOT INCLUDE DATA FROM CHIPPEWA AND  
MACKINAC COUNTIES.  
 
THE NWS MARQUETTE WEB PAGE IS AT HTTP://WWW.WEATHER.GOV/MQT (ALL  
LOWER CASE). CONTACT THE NATIONAL CLIMATIC DATA CENTER AT (828) 271-  
4800 OR WWW.NCDC.NOAA.GOV.  
 

 
KC  
 
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