May, 1997 Preliminary Local Climatological Data Duluth, MN National Weather Service |-Temperature-|--------Degree Days---------|-Precipitation-|-Snowfall-|----Wind----| (degrees F) (base 65 degrees F) (inches) (inches) (mph, deg) Heating Cooling Max Min Avg Dep HDD Seas Dep CDD Seas Dep Tot Tot Norm Tot Tot Avg Pk Dir from for for for for for Spd Gust at Norm Seas Seas Mon Mon Seas Pk Date | | | | | | | | | | | | | | | | | | 1 56 28 42 -3 23 9486 263 M M M 0 0 0.08 0.0 127.8 7.4 M M 2 56 33 45 -1 20 9506 264 0 0 0 0 0 0.16 0.0 127.8 6.5 M M 3 54 32 43 -3 22 9528 267 0 0 0 0 0 0.24 0.0 127.8 12.0 M M 4 68 34 51 5 14 9542 262 0 0 0 0 0 0.32 0.0 127.8 13.4 M M 5 64 40 52 5 13 9555 257 0 0 0 0.06 0.06 0.41 0.0 127.8 15.0 M M 7 60 41 51 3 14 9585 252 0 0 0 0.37 0.43 0.59 0.0 127.8 12.1 M M 8 49 35 42 -6 23 9608 258 0 0 0 0.12 0.55 0.68 0.0 127.8 17.8 M M 12 33 27 30 -20 35 9700 285 0 0 0 T 0.63 1.04 T 127.8 13.7 M M 13 48 24 36 -14 29 9729 299 0 0 0 0.05 0.68 1.13 T 127.8 5.3 M M 14 43 31 37 -13 28 9757 312 0 0 0 0.26 0.94 1.22 0.1 127.9 9.1 M M 15 44 30 37 -14 28 9785 325 0 0 0 T 0.94 1.32 T 127.9 8.3 M M 16 59 33 46 -5 19 9804 330 M M M 0.05 0.99 1.42 T 127.9 11.0 M M 18 53 37 45 -7 20 9845 343 M M M 0.17 1.21 1.62 0.0 127.9 10.8 M M 19 51 36 44 -8 21 9866 351 M M M 0.25 1.46 1.72HAIL) 127.9 10.9 M M 20 54 37 46 -6 19 9885 357 0 0 0 T 1.46 1.82 0.0 127.9 10.3 M M 21 58 35 47 -6 18 9903 363 0 0 0 0 1.46 1.92 0.0 127.9 8.0 M M 22 48 36 44 -9 21 9924 372 0 0 0 0.23 1.69 2.02 0.0 127.9 11.8 M M 23 51 38 45 -8 20 9944 380 M M M 0.52 2.21 2.13 0.0 127.9 5.5 M M 24 56 43 50 -4 15 9959 383 M M M 0.10 2.31 2.24 0.0 127.9 11.5 M M 26 59 36 48 -6 17 9996 398 M M M 0 2.31 2.46 0.0 127.9 16.8 M M 27 65 37 51 -3 14 1001 0 0 0 0 0 2.31 2.57 0.0 127.9 11.3 M M 28 64 44 54 -1 11 10021 402 0 0 0 0 2.31 2.68 0.0 127.9 12.1 M M 29 55 42 49 -6 16 1003 9 0 0 0 0.09 2.40 2.79 0.0 127.9 6.9 M M 30 75 44 60 5 5 10044 405 M M M 0 2.40 2.91 0.0 127.9 5.9 M M 31 83 48 66 10 0 10044 396 1 1 1 0 2.40 3.03 0.0 127.9 6.3 M M MONTHLY CLIMATIC SUMMARY FOR DULUTH MN MAY 1997 ...TEMPERATURE DATA... ...PRECIPITATION DATA... AVERAGE MONTHLY: 46.1 TOTAL FOR MONTH: 2.40 DEPARTURE FROM NORMAL: -4.7 DEPARTURE FROM NORMAL: -0.63 HIGHEST: 83 ON 31 GREATEST IN A DAY: 0.52 ON 23 LOWEST: 24 ON 13 SNOWFALL, ICE PELLETS, HAIL MAX 32 OR BELOW: 0 TOTAL FOR MONTH: 0.1 INCHES MAX 90 OR ABOVE: 0 GREATEST SNOWFALL IN A DAY: 0.1 ON 14 MIN 32 OR BELOW: 8 GREATEST SNOW DEPTH: 0 ON MIN 0 OR BELOW: 0 ...WEATHER, DAYS WITH... ...HEATING DEGREE DAYS... 0.01 INCH OR MORE PRECIP: 14 TOTAL THIS MONTH: 581 0.10 INCH OR MORE PRECIP: 7 DEPARTURE FROM NORMAL: 136 0.50 INCH OR MORE PRECIP: 1 SEASONAL TOTAL: 10044 1.00 INCH OR MORE PRECIP: 0 DEPARTURE FROM NORMAL: 396 ...COOLING DEGREE DAYS... TOTAL THIS MONTH: 1 DEPARTURE FROM NORMAL: 1 ...PRESSURE DATA... SEASONAL TOTAL: 1 DEPARTURE FROM NORMAL: 1 HIGHEST SEA-LEVEL 30.44 ON 27 LOWEST SEA-LEVEL 29.50 ON 5 REMARKS: MAY WAS COOLER THAN NORMAL WITH PRECIPITATION ALSO BELOW NORMAL. THE SPRING MONTHS OF MARCH THROUGH MAY AVERAGED 35.0 DEGREES...WHICH IS THE 10TH COLDER SPRING ON RECORD BASED ON AIRPORT RECORDS SINCE 1941. THE AVERAGE TEMPERATURE OF 46.1 DEGREES FOR THE MONTH WAS ALSO THE 5TH COLDEST MAY ON RECORD.