April, 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 63 38 51 13 14 7682 346 0 0 0 0 0 0.08 0 81.7 17.6 34 200 2 62 40 51 13 14 7696 333 0 0 0 0.01 0.01 0.16 0 81.7 12.8 22 240 3 57 32 45 6 20 7716 327 0 0 0 0 0.01 0.24 0 81.7 9.2 20 210 4 60 48 54 14 11 7727 313 0 0 0 0.03 0.04 0.32 0 81.7 13.1 37 170 5 57 48 53 13 12 7739 300 0 0 0 0.41 0.45 0.40 0 81.7 18.9 45 210 6 51 18 35 -6 30 7769 306 0 0 0 0.04 0.49 0.48 .3 82.0 31.6 60 290 7 29 15 22 -19 43 7812 325 0 0 0 0.01 0.50 0.56 0.2 82.2 22.6 43 300 8 26 9 18 -24 47 7859 349 0 0 0 T 0.50 0.64 T 82.2 15.6 32 330 9 36 13 25 -17 40 7899 366 0 0 0 0 0.50 0.73 0.0 82.2 6.3 15 260 10 32 26 29 -14 36 7935 380 0 0 0 0.15 0.65 0.82 1.5 83.7 5.0 11 50 11 39 21 30 -13 35 7970 393 0 0 0 0.02 0.67 0.91 0.2 83.9 10.4 23 30 12 45 28 37 -6 28 7998 399 0 0 0 0 0.67 1.00 0 83.9 11.1 29 20 13 48 25 37 -7 28 8026 406 0 0 0 0 0.67 1.09 0 83.9 9.6 22 330 14 51 28 40 -4 25 8051 410 0 0 0 0 0.67 1.18 0 83.9 16.2 33 200 15 56 29 43 -2 22 8073 412 0 0 0 0 0.67 1.27 0 83.9 17.7 30 210 16 38 25 32 -13 33 8106 425 0 0 0 T 0.67 1.36 T 83.9 14.5 29 330 17 52 22 37 -9 28 8134 434 0 0 0 0 0.67 1.45 0 83.9 5.8 15 260 18 54 31 43 -3 22 8156 437 0 0 0 0.59 1.26 1.54 0 83.9 M 21 170 19 62 36 49 2 16 8172 435 0 0 0 0 1.26 1.63 0 83.9 9.9 23 320 20 64 38 51 4 14 8186 431 0 0 0 0 1.26 1.73 0 83.9 8.8 21 10 21 58 41 50 3 15 8201 428 0 0 0 0.07 1.33 1.83 0 83.9 8.2 16 70 22 56 33 45 -3 20 8221 431 0 0 0 0 1.33 1.93 0 83.9 8.2 21 140 23 53 34 44 -4 21 8242 435 0 0 0 T 1.33 2.03 0 83.9 12.4 28 30 24 57 30 44 -5 21 8263 440 0 0 0 0 1.33 2.13 0 83.9 10.3 24 20 25 62 31 47 -2 18 8281 442 0 0 0 0 1.33 2.23 0 83.9 5.5 16 320 26 65 33 49 -1 16 8297 443 0 0 0 0 1.33 2.33 0 83.9 9.6 22 220 27 62 40 51 1 14 8311 442 0 0 0 0.13 1.46 2.43 0 83.9 7.9 34 320 28 68 32 50 0 15 8326 442 0 0 0 0 1.46 2.53 0 83.9 8.4 25 200 29 71 44 58 7 7 8333 435 0 0 0 0.01 1.47 2.63 0 83.9 14.2 30 230 30 48 34 41 -10 24 8357 445 0 0 0 0.85 2.32 2.73 0.7 84.6 17.8 39 10 APR CLIMATOLOGICAL REPORT FOR ROCHESTER MN APRIL OF 1997 WAS SOMEWHAT COLDER AND DRIER THAN NORMAL IN ROCHESTER. SNOWFALL WAS SLIGHTLY BELOW NORMAL BUT THE 0.7 INCHES WHICH FELL ON THE 30TH BROUGHT THE SEASON TOTAL TO 84.6 INCHES. THIS UPDATED SNOWFALL TOTAL FOR THE WINTER SEASON CONTINUES TO ESTABLISH A NEW RECORD FOR ROCHESTER... THE OLD RECORD TOTAL BEING 77.5 INCHES IN THE WINTER OF 1950-1951. APRIL GOT OFF TO A MILD START THE FIRST WEEK BUT VERY COLD WEATHER SET IN FROM THE 7TH THROUGH THE 13TH WITH MUCH BELOW NORMAL TEMPERATURES. THE ONLY 70 DEGREE READING FOR THE MONTH OCCURRED ON THE 29TH BEFORE A COLD RAIN/SNOW MIX ON THE 30TH CLOSED OUT THE MONTH. TEMPERATURE DATA...... (DEGREES F) AVERAGE MONTHLY TEMPERATURE.... 41.7 OR 3.2 DEGREES BELOW NORMAL AVERAGE MAXIMUM TEMPERATURE.... 52.7 AVERAGE MINIMUM TEMPERATURE.... 30.7 HIGHEST TEMPERATURE WAS 71 ON THE 29TH LOWEST TEMPERATURE WAS 9 ON THE 8TH PRECIPITATION DATA.... ..RAIN.. TOTAL FOR THE MONTH......... 2.32 OR 0.41 INCHES BELOW NORMAL TOTAL SINCE JANUARY 1ST..... 6.50 OR 0.47 INCHES ABOVE NORMAL GREATEST 24 HOUR RAINFALL WAS 0.86 INCHES ON DAY(S) 29-30 ..SNOW.. TOTAL FOR THE MONTH......... 2.9 TOTAL FOR THE SEASON........ 84.6 GREATEST 24 HOUR SNOWFALL WAS 1.5 INCHES ON DAY THE 10TH ..NUMBER OF DAYS.. WITH .01 INCHES OR MORE 12 HIGHS 32 DEGREES OR COLDER 3 WITH .10 INCHES OR MORE 5 HIGHS 90 DEGREES OR WARMER 0 WITH .50 INCHES OR MORE 2 LOWS 32 DEGREES OR COLDER 17 WITH 1.00 INCHES OR MORE 0 LOWS 0 DEGREES OR COLDER 0 SEA LEVEL PRESSURE............ HIGHEST 30.57 INCHES ON THE 9TH LOWEST 29.01 INCHES ON THE 5TH WIND DATA............. THE AVERAGE MONTHLY WIND SPEED WAS 12.0 MPH THE FASTEST TWO-MINUTE WIND WAS... 49 MPH FROM 290 DEGREES THE HIGHEST PEAK WIND GUST WAS.... 60 FROM 290 DEGREES LOOKING AHEAD TO MAY... AVERAGE TEMPERATURE...56.8 DEGREES AVERAGE HIGH..........68.1 DEGREES AVERAGE LOW...........45.5 DEGREES AVERAGE RAINFALL......3.40 INCHES AVERAGE CLEAR DAYS....7 PARTLY CLOUDY DAYS...9 CLOUDY DAYS...15 AVERAGE WIND SPEED 13.2 MPH PREVAILING WIND DIRECTION...SOUTHERLY AVERAGE NUMBER OF THUNDERSTORMS...6