September, 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 74 52 63 4 2 267 87 0 125 -55 0.06 0.06 0.14 M M 11.4 M M 2 63 45 54 -5 11 278 91 0 125 -55 0 0.06 0.28 M M 7.5 M M 3 63 34 49 -9 16 294 100 0 125 -55 0 0.06 0.42 M M 3.6 M M 4 68 43 56 -2 9 303 101 0 125 -55 0 0.06 0.56 M M 7.5 M M 5 80 57 69 11 0 303 93 4 129 -51 0 0.06 0.70 M M 13.4 M M 6 69 56 63 6 2 305 87 0 129 -51 T 0.06 0.84 M M 10.2 M M 7 59 54 57 0 8 313 87 0 129 -51 T 0.06 0.98 M M 11.6 M M 8 72 56 64 7 1 314 80 0 129 -51 0.14 0.20 1.12 M M 6.9 M M 9 65 49 57 1 8 322 79 0 129 -51 T 0.20 1.26 M M 8.0 M M 10 65 43 54 -2 11 333 81 0 129 -51 0 0.20 1.39 M M 6.5 M M 11 69 40 55 0 10 343 81 0 129 -51 0 0.20 1.52 M M 3.4 M M 12 69 43 56 1 9 352 80 0 129 -51 0 0.20 1.65 M M 6.3 M M 13 67 56 62 7 3 355 73 0 129 -51 T 0.20 1.78 M M 7.6 M M 14 78 57 68 13 0 355 63 3 132 -48 0.01 0.21 1.91 M M 9.0 M M 15 64 54 59 5 6 361 58 0 132 -48 0.08 0.29 2.04 M M 9.5 M M 16 65 55 60 6 5 366 52 0 132 -48 0.51 0.80 2.17 M M 12.8 M M 17 67 50 59 5 6 372 47 0 132 -48 0 0.80 2.30 M M 14.8 M M 18 67 52 60 7 5 377 40 0 132 -48 0.50 1.30 2.43 M M 8.2 M M 19 62 45 0 20 53 40 47 -6 18 406 45 0 132 -48 0 1.30 2.69 M M 8.4 M M 21 62 28 0 22 64 45 0 23 60 39 50 -2 15 446 46 0 132 -48 0 1.30 3.05 M M 5.8 M M 24 71 43 57 6 8 454 40 0 132 -48 0 1.30 3.17 M M 18.3 M M 25 72 49 61 10 4 458 30 0 132 -48 0 1.30 3.29 M M 6.6 M M 26 73 46 60 9 5 463 21 0 132 -48 0 1.30 3.40 M M 7.3 M M 27 64 57 61 11 4 467 10 0 132 -48 0.21 1.51 3.51 M M 10.6 M M 28 61 49 55 5 10 477 5 0 132 -48 0.13 1.64 3.62 M M 18.6 M M 29 57 48 53 3 12 489 2 0 132 -48 0.07 1.71 3.73 M M 19.6 M M 30 56 40 48 -2 17 506 4 0 132 -48 T 1.71 3.84 M M 10.0 M M MONTHLY CLIMATIC SUMMARY FOR DULUTH MN...SEPTEMBER 1997 ...TEMPERATURE DATA... ...PRECIPITATION DATA... AVERAGE MONTHLY: 56.9 TOTAL FOR MONTH: 1.71 DEPARTURE FROM NORMAL: 2.7 DEPARTURE FROM NORMAL: -2.13 HIGHEST: 80 ON 5 GREATEST IN A DAY: 0.51 ON 16 LOWEST: 34 ON 3 SNOWFALL, ICE PELLETS, HAIL MAX 32 OR BELOW: 0 TOTAL FOR MONTH: 0.0 INCHES MAX 90 OR ABOVE: 0 GREATEST SNOWFALL IN A DAY: 0.0 ON MIN 32 OR BELOW: 0 GREATEST SNOW DEPTH: 0 ON MIN 0 OR BELOW: 0 ...WEATHER, DAYS WITH... ...HEATING DEGREE DAYS... 0.01 INCH OR MORE PRECIP: 9 TOTAL THIS MONTH: 241 0.10 INCH OR MORE PRECIP: 5 DEPARTURE FROM NORMAL: -88 0.50 INCH OR MORE PRECIP: 2 SEASONAL TOTAL: 506 1.00 INCH OR MORE PRECIP: 0 DEPARTURE FROM NORMAL: 4 ...COOLING DEGREE DAYS... TOTAL THIS MONTH: 7 DEPARTURE FROM NORMAL: 7 ...PRESSURE DATA... SEASONAL TOTAL: 132 DEPARTURE FROM NORMAL: -48 HIGHEST SEA-LEVEL 30.59 ON 3 LOWEST SEA-LEVEL 29.16 ON 29 ...REMARKS... THE TEMPERATURE WAS 2.7 DEGREES WARMER THAN NORMAL AND THE PRECIPITATION WAS 2.13 INCHES BELOW NORMAL. NO RECORDS WERE SET OR TIED IN SEPTEMBER.