August, 1997 Preliminary Local Climatological Data Rochester, 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 79 62 71 0 0 38 22 6 281 -53 0.02 0.02 0.13 M M 10.9 23 220 2 85 64 75 4 0 38 22 10 291 -49 0 0.02 0.26 M M 7.8 16 280 3 83 66 75 4 0 38 22 10 301 -45 T 0.02 0.39 M M 7.7 18 340 4 78 57 68 -2 0 38 22 3 304 -47 0 0.02 0.52 M M 10.6 28 10 5 73 51 62 -8 3 41 25 0 304 -52 0.05 0.07 0.65 M M 4.8 13 260 6 73 57 65 -5 0 41 25 0 304 -57 0.07 0.14 0.78 M M 5.4 17 240 7 77 53 65 -5 0 41 25 0 304 -62 0 0.14 0.91 M M 9.0 20 200 8 76 58 67 -3 0 41 25 2 306 -65 0 0.14 1.04 M M 12.8 25 200 9 76 56 66 -4 0 41 25 1 307 -69 0.04 0.18 1.17 M M 10.4 22 170 10 64 55 60 -10 5 46 30 0 307 -74 0.03 0.21 1.30 M M 8.5 18 340 11 70 54 62 -7 3 49 32 0 307 -79 0 0.21 1.43 M M 7.5 21 120 12 66 59 63 -6 2 51 33 0 307 -84 0.57 0.78 1.56 M M 6.6 16 20 13 68 50 59 -10 6 57 38 0 307 -89 0 0.78 1.69 M M 7.1 18 340 14 71 50 61 -8 4 61 41 0 307 -94 0.32 1.10 1.82 M M 10.4 25 170 15 79 60 70 1 0 61 40 5 312 -94 0.21 1.31 1.95 M M 10.8 26 230 16 77 63 70 1 0 61 39 5 317 -94 0.18 1.49 2.08 M M 5.5 15 270 17 65 56 61 -7 4 65 42 0 317 -98 T 1.49 2.20 M M 9.9 20 20 18 65 54 60 -8 5 70 46 0 317 -102 0 1.49 2.32 M M 4.9 11 140 19 67 56 62 -6 3 73 48 0 317 -106 0.77 2.26 2.44 M M 9.8 22 170 20 65 51 58 -10 7 80 54 0 317 -110 0.04 2.30 2.56 M M 11.3 26 330 21 73 50 62 -5 3 83 55 0 317 -114 0 2.30 2.68 M M 8.3 21 340 22 71 48 60 -7 5 88 58 0 317 -118 0.01 2.31 2.80 M M 4.7 13 20 23 77 53 65 -2 0 88 56 0 317 -122 0.10 2.41 2.92 M M 11.2 23 240 24 75 57 66 -1 0 88 54 1 318 -125 0 2.41 3.04 M M 7.6 15 40 25 71 56 64 -2 1 89 53 0 318 -128 0 2.41 3.16 M M 9.7 17 140 26 80 61 71 5 0 89 51 6 324 -125 0 2.41 3.28 M M 4.7 15 180 27 78 60 69 3 0 89 49 4 328 -124 0.01 2.42 3.40 M M 6.9 17 270 28 79 60 70 4 0 89 51 5 333 -122 0 2.42 3.52 M M M M M 29 75 61 68 3 0 89 45 3 336 -121 0.02 2.45 3.64 M M 13.4 24 150 30 81 63 72 7 0 89 43 7 343 -116 0.80 3.25 3.76 M M 8.0 37 200 31 81 59 70 6 0 89 40 5 348 -113 0 3.25 3.88 M M 5.3 13 110 AUGUST CLIMATOLOGICAL REPORT FOR ROCHESTER MN AUGUST OF 1997 WAS A COOL AND CLOUDY MONTH IN ROCHESTER WITH THE AVERAGE TEMPERATURE BEING 2.8 DEGREES BELOW NORMAL. THE AVERAGE DAILY HIGH TEMPERATURE WAS ONLY 74.1 DEGREES WHICH IS ALMOST 5 DEGREES BELOW THE NORMAL OF 78.8 DEGREES. THE HIGHEST TEMPERATURE RECORDED THIS AUGUST WAS ONLY 85 DEGREES AND THE MERCURY ONLY REACHED 80 ON 5 OF THE 31 DAYS. THE MIDDLE PART OF AUGUST WAS PARTICULARILY COOL WITH 7 DAYS BETWEEN THE 10TH AND 20TH OF THE MONTH FAILING TO REACH THE 70 DEGREE MARK. THE MEAN MONTHLY TEMPERATURE OF 65.4 DEGREES MAKES THIS AUGUST THE 8TH COLDEST IN RECORDED ROCHESTER WEATHER HISTORY. THE COLDEST AUGUST EVER OCCURRED FIVE YEARS AGO IN 1992 WHEN THE AVERAGE TEMPERATURE WAS ONLY 63.2 DEGREES. TOTAL RAINFALL IN AUGUST WAS SLIGHTLY BELOW NORMAL BUT MEASUREABLE PRECIPITATION FELL ON 16 OF TH% E 31 DAYS. THE NORMAL NUMBER OF DAYS WITH MEASUREABLE RAIN IN AUGUST IS ONLY 10. TEMPERATURE DATA...... (DEGREES F) AVERAGE MONTHLY TEMPERATURE.... 65.4 OR 2.8 DEGREES BELOW NORMAL AVERAGE MAXIMUM TEMPERATURE.... 74.1 AVERAGE MINIMUM TEMPERATURE.... 56.8 HIGHEST TEMPERATURE WAS 85 ON DAY 2 LOWEST TEMPERATURE WAS 48 ON DAY 22 HEATING DEGREE DAYS (BASE 65) COOLING DEGREE DAYS MONTHLY TOTAL ........... 51 MONTHLY TOTAL .......... 73 DEPARTURE FROM NORMAL.... 18 DEPARTURE FROM NORMAL... -60 SEASONAL TOTAL (JUL-JUN). 89 SEASONAL TOTAL (JAN-DEC) 348 DEPARTURE FROM NORMAL.... 40 DEPARTURE FROM NORMAL... -113 PRECIPITATION DATA.... ..RAIN.. TOTAL FOR THE MONTH......... 3.27 OR 0.61 INCHES BELOW NORMAL TOTAL SINCE JANUARY 1ST..... 24.45 OR 3.22 INCHES ABOVE NORMAL GREATEST 24 HOUR RAINFALL WAS 0.82 INCHES ON DAY(S) 29-30 ..NUMBER OF DAYS.. WITH .01 INCHES OR MORE 16 HIGHS 32 DEGREES OR COLDER 0 WITH .10 INCHES OR MORE 7 HIGHS 90 DEGREES OR WARMER 0 WITH .50 INCHES OR MORE 3 LOWS 32 DEGREES OR COLDER 0 WITH 1.00 INCHES OR MORE 0 LOWS 0 DEGREES OR COLDER 0 SEA LEVEL PRESSURE............ HIGHEST 30.34 INCHES ON DAY 05 LOWEST 29.44 INCHES ON DAY 15 WIND DATA............. THE AVERAGE MONTHLY WIND SPEED WAS 8.3 MPH THE FASTEST TWO-MINUTE WIND WAS... 29 MPH FROM 200 DEGREES THE HIGHEST PEAK WIND GUST WAS.... 37 FROM 200 DEGREES