October, 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 65 37 51 -3 14 254 9 0 368 -104 0 0 0.10 M M 9.2 22 190 2 85 55 70 16 0 254 -2 5 373 -99 0 0 0.19 M M 10.3 26 200 3 93 60 77 24 0 254 -14 12 385 -87 0 0 0.28 M M 15.8 40 210 4 78 47 63 10 2 256 -24 0 385 -87 0 0 0.37 M M 10.7 23 180 5 80 51 66 13 0 256 -36 1 386 -86 0 0 0.46 M M 13.2 33 260 6 89 48 69 17 0 256 -49 4 390 -82 0.07 0.07 0.55 M M 10.7 29 210 7 83 54 69 17 0 256 -62 4 394 -78 0.06 0.13 0.64 M M 12.3 31 190 8 71 65 68 17 0 256 -76 3 397 -75 0.53 0.66 0.72 M M 19.4 41 180 9 66 44 55 4 10 266 -80 0 397 -75 T 0.66 0.80 M M 15.1 38 270 10 69 36 53 2 12 278 -82 0 397 -75 0 0.66 0.88 M M 12.0 26 180 12 68 61 65 15 0 278 -112 0 399 -73 1.81 2.47 1.04 M M 24.6 47 180 13 61 31 46 -3 19 297 -109 0 399 -73 0.07 2.54 1.12 T T 22.0 46 260 14 47 29 38 -11 27 324 -98 0 399 -73 0 2.54 1.20 0 T 11.7 25 270 15 57 32 45 -4 20 344 -94 0 399 -73 0 2.54 1.27 0 T 6.8 13 220 16 61 35 48 0 17 361 -94 0 399 -73 0 2.54 1.34 0 T 4.5 11 190 17 59 36 48 0 17 378 -94 0 399 -73 0 2.54 1.41 0 T 11.7 21 200 18 62 41 52 5 13 391 -99 0 399 -73 0 2.54 1.48 0 T 17.9 33 210 19 52 33 43 -4 22 413 -95 0 399 -73 T 2.54 1.55 0 T 15.0 30 330 20 48 26 37 -9 28 441 -86 0 399 -73 0 2.54 1.62 0 T 10.4 28 320 21 37 28 33 -13 32 473 -73 0 399 -73 0 2.54 1.69 0 T M 8 020 22 43 23 33 -12 32 505 -61 0 399 -73 0 2.54 1.76 0 T 6.4 17 240 23 49 37 43 -2 22 527 -59 0 399 -73 0 2.54 1.83 0 T 10.5 20 150 24 43 39 41 -3 24 551 -56 0 399 -73 0 2.54 1.90 0 T 12.6 22 60 25 39 29 34 -10 31 582 -46 0 399 -73 0 2.54 1.96 0 T 13.9 24 30 26 37 20 29 -15 36 618 -31 0 399 -73 0 2.54 2.02 0.0 T 14.6 28 20 27 40 17 29 -14 36 654 -17 0 399 -73 0 2.54 2.08 0.0 T 9.0 25 200 28 41 29 35 -8 30 684 -9 0 399 -73 0.01 2.55 2.14 0.0 T 10.2 23 190 29 56 32 44 2 21 705 -11 0 399 -73 0 2.55 2.20 0 T 9.7 23 180 30 54 42 48 7 17 722 -18 0 399 -73 T 2.55 2.26 0 T 15.2 28 190 31 63 35 49 8 16 738 -26 0 399 -73 0.16 2.71 2.32 0 T 12.9 31 170 OCT CLIMATOLOGICAL REPORT FOR ROCHESTER MN ...OCTOBER AVERAGED MUCH ABOVE NORMAL TEMPERATURES AND WAS SLIGHTLY WETTER THAN NORMAL... THE AVERAGE MONTHLY TEMPERATURE WAS 50.7 DEGREES WHICH WAS 2.8 DEGREES ABOVE NORMAL. WHILE THE MONTH DID NOT RANK IN THE TOP 10 WARMEST OCTOBERS IT WAS THE WARMEST SINCE 1975. THE FIRST PART OF THE MONTH STARTED OFF AT A RECORD PACE WHEN 2 RECORD HIGHS WERE SET AND 1 WAS TIED. THE 93 DEGREES ON THE 3RD BLEW BY THE OLD RECORD OF 83 SET IN 1967...THIS ALSO SET THE RECORD FOR THE HIGHEST TEMPERATURE EVER RECORDED IN OCTOBER. THE 89 DEGREES REACHED ON 6TH EDGED BY THE OLD RECORD OF 88 SET IN 1963...AND FINALLY THE 83 DEGREES REACHED ON THE 7TH TIED THE RECORD SET IN 1993. RAINFALL FOR THE MONTH TOTALLED 2.71 INCHES WHICH WAS 0.39 ABOVE NORMAL. THE GREATEST 24 HOUR RAINFALL WAS ON THE 12TH TO THE 13TH WHEN 1.83 INCHES WERE RECORDED. THE FIRST SNOW OF THE SEASON WAS RECORDED ON THE 13TH WHEN A TRACE FELL. THE TOTAL PRECIPATION FOR THE YEAR AT MONTHS END WAS 29.01 INCHES. TEMPERATURE DATA...... (DEGREES F) AVERAGE MONTHLY TEMPERATURE.... 50.7 OR 2.8 DEGREES ABOVE NORMAL AVERAGE MAXIMUM TEMPERATURE.... 61.4 AVERAGE MINIMUM TEMPERATURE.... 40.0 HIGHEST TEMPERATURE WAS 93 ON DAY 3 LOWEST TEMPERATURE WAS 17 ON DAY 27 HEATING DEGREE DAYS (BASE 65) COOLING DEGREE DAYS MONTHLY TOTAL ........... 498 MONTHLY TOTAL .......... 31 DEPARTURE FROM NORMAL.... -32 DEPARTURE FROM NORMAL... 31 SEASONAL TOTAL (JUL-JUN). 738 SEASONAL TOTAL (JAN-DEC) 399 DEPARTURE FROM NORMAL.... -26 DEPARTURE FROM NORMAL... -73 PRECIPITATION DATA.... ..RAIN.. TOTAL FOR THE MONTH......... 2.71 OR 0.39 INCHES ABOVE NORMAL TOTAL SINCE JANUARY 1ST..... 29.01 OR 1.99 INCHES ABOVE NORMAL GREATEST 24 HOUR RAINFALL WAS 1.83 INCHES ON DAY(S) 12-13 ..SNOW.. TOTAL FOR THE MONTH......... T TOTAL FOR THE SEASON........ T ..NUMBER OF DAYS.. WITH .01 INCHES OR MORE 7 HIGHS 32 DEGREES OR COLDER 1 WITH .10 INCHES OR MORE 3 HIGHS 90 DEGREES OR WARMER 1 WITH .50 INCHES OR MORE 2 LOWS 32 DEGREES OR COLDER 12 WITH 1.00 INCHES OR MORE 1 LOWS 0 DEGREES OR COLDER 0 HIGHEST PRESSURE WAS 30.50 INCHES ON DAY 16 LOWEST PRESSURE WAS 29.28 INCHES ON DAY 12 WIND DATA............. THE AVERAGE MONTHLY WIND SPEED WAS 12.9 MPH THE FASTEST TWO-MINUTE WIND WAS... 40 MPH FROM 240 DEGREES THE HIGHEST PEAK WIND GUST WAS.... 47 FROM 180 DEGREES LOOKING AHEAD...THE AVERAGE MOTHLY TEMPERATURE FOR NOVEMBER IS 40.9 DEGREES...THE AVERAGE PRECIPITATION IS 1.61 INCHES...AND THE AVERAGE SNOWFALL IS 5.3 INCHES. THE AVERAGE HIGH STARTS OUT AS 50 ON THE 1ST AND FALLS TO 32 BY THE 30TH. THE AVERAGE LOW STARTS OUT AS 31 AND BY MONTHS END DROPS TO 17 DEGREES.