July, 1999 Preliminary Local Climatological Data Fargo, ND 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 57 66 -4 0 8131 M 1 14 1 T M 0.09 M M 6.5 14 330 2 81 54 68 -2 0 0 -2 3 144 -11 0 M 0.18 M M 7.0 24 170 3 91 66 79 9 0 0 -3 14 158 -3 0.02 0.02 0.27 M M 11.3 41 280 4 83 64 71 1 0 0 -4 6 164 -3 1.21 1.23 0.36 0.0 T M M M 5 80 68 74 4 0 0 -5 9 173 0 0 0.12 0.45 0.0 T M M M 6 82 60 71 1 0 0 -6 6 179 0 0 1.23 0.54 M M M M M 7 78 58 68 -2 0 0 -7 3 182 -3 0 1.23 0.63 0.0 T 8.7 20 320 8 72 59 66 -4 0 0 -8 1 183 -8 0.47 1.70 0.72 0.0 T 11.5 30 130 9 70 56 63 -8 2 2 -7 0 183 -15 T 1.70 0.81 0.0 T 12.0 36 30 10 79 50 65 -6 0 2 -8 0 183 -22 T 1.70 0.90 0.0 T 4.8 16 260 11 83 56 70 -1 0 2 -9 5 188 -24 0 1.70 0.99 0.0 T 7.2 16 200 12 85 61 73 2 0 2 -10 8 196 -23 0 1.70 1.08 0.0 T 12.2 26 200 13 87 65 76 5 0 2 -11 11 207 -19 T 1.70 1.17 0 T 6.3 18 160 14 84 68 76 5 0 2 -12 11 218 -15 T 1.70 1.26 0.0 T 8.2 20 10 15 91 66 79 8 0 2 -13 14 232 -8 0.02 1.72 1.35 0.0 T 13.6 33 210 16 73 57 65 -6 0 2 -14 0 232 -15 0 1.72 1.44 0 T 10.1 25 280 17 73 53 63 -8 2 4 -13 0 232 -22 0 1.72 1.53 0 0 5.9 17 10 18 76 61 69 -2 0 4 -14 4 236 -25 0 1.72 1.62 M M 8.6 21 130 19 82 57 70 -1 0 4 -15 5 241 -27 0 1.72 1.71 M M 3.0 14 180 20 86 63 75 3 0 4 -15 10 251 M 0 1.72 M M M 9.8 18 180 21 88 67 78 6 0 4 -15 13 264 -18 0 1.72 1.89 M M 9.8 17 160 22 90 69 80 8 0 4 -15 15 279 -10 0.17 1.89 1.98 0.0 T 10.5 26 150 23 94 63 79 7 0 4 -15 14 293 -3 0 1.89 2.06 M M 8.3 30 270 24 91 59 75 3 0 4 -15 10 303 0 0.02 1.91 2.14 M M 5.2 18 150 25 88 61 75 3 0 4 -15 10 313 3 0.32 2.23 2.22 M M 11.0 30 160 26 79 57 68 -4 0 4 -15 3 316 -1 T 2.23 2.30 M M 8.1 21 270 27 89 57 73 1 0 4 -15 8 324 0 0.12 2.35 2.38 M M 10.5 34 200 28 94 55 75 3 0 4 -15 10 334 3 T 2.35 2.46 0.0 T 9.7 26 200 29 95 62 79 7 0 4 -15 14 348 10 0 2.35 2.54 0.0 T 6.6 17 220 30 80 61 71 -1 0 4 -15 6 354 9 T 2.34 2.62 0.0 T 9.1 28 350 31 75 55 65 -7 0 4 -15 0 354 2 0 2.34 2.70 0.0 T 11.4 26 330 Monthly Summary for July TEMPERATURE DATA...... (DEGREES F) AVERAGE MONTHLY TEMPERATURE.... 71.5 OR 0.4 DEGREES ABOVE NORMAL AVERAGE MAXIMUM TEMPERATURE.... 83.1 AVERAGE MINIMUM TEMPERATURE.... 59.9 HIGHEST TEMPERATURE WAS 95 ON DAY 29 LOWEST TEMPERATURE WAS 50 ON DAY 10 HEATING DEGREE DAYS (BASE 65) COOLING DEGREE DAYS MONTHLY TOTAL ........... 4 MONTHLY TOTAL .......... 214 DEPARTURE FROM NORMAL.... -15 DEPARTURE FROM NORMAL... 5 SEASONAL TOTAL (JUL-JUN). 4 SEASONAL TOTAL (JAN-DEC) 354 DEPARTURE FROM NORMAL.... -15 DEPARTURE FROM NORMAL... 2 PRECIPITATION DATA.... ..RAIN.. TOTAL FOR THE MONTH......... 2.34 OR 0.36 INCHES BELOW NORMAL TOTAL SINCE JANUARY 1ST..... 12.86 OR 0.89 INCHES ABOVE NORMAL GREATEST 24 HOUR RAINFALL WAS 1.21 INCHES ON JULY 4 ..NUMBER OF DAYS.. WITH .01 INCHES OR MORE 8 HIGHS 32 DEGREES OR COLDER 0 WITH .10 INCHES OR MORE 5 HIGHS 90 DEGREES OR WARMER 7 WITH .50 INCHES OR MORE 1 LOWS 32 DEGREES OR COLDER 0 WITH 1.00 INCHES OR MORE 1 LOWS 0 DEGREES OR COLDER 0 SKY CONDITION......... SEA LEVEL PRESSURE............ NUMBER OF DAYS CLEAR .. 31 HIGHEST 30.07 INCHES ON DAY 01 NUMBER OF DAYS PTCLDY .. 0 LOWEST 29.82 INCHES ON DAY 01 NUMBER OF DAYS CLOUDY .. 0 WIND DATA............. THE AVERAGE MONTHLY WIND SPEED WAS 8.4 MPH THE FASTEST TWO-MINUTE WIND WAS... 74 MPH FROM 330 DEGREES THE HIGHEST PEAK WIND GUST WAS.... 91 FROM 340 DEGREES THE MONTH OF JULY PROVED TO BE VERY CLOSE TO THE SEASONAL NORMAL TEMPERATURE RANGE...AS THE MONTHLY AVERAGE TEMPERATURE WAS ONLY 0.4 DEGREES ABOVE NORMAL. PRECIPITATION WISE...A TOTAL OF 2.34 INCHES OF RAIN FELL...WHICH WAS 0.36 INCHES BELOW NORMAL. ON THE FOURTH OF JULY...1.21 INCHES OF RAIN FELL FROM A POWERFUL THUNDERSTORM WHICH CAUSED SIGNIFICANT STRAIGHT LINE WIND DAMAGE THROUGHOUT THE CITY. WITHOUT THIS THUNDERSTORM...RAINFALL TOTALS WOULD HAVE BEEN OVER ONE AND ONE HALF INCHES BELOW NORMAL FOR THE MONTH. GRAND FORKS MONTHLY CLIMATOLOGICAL SUMMARY NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 314 AM CDT SUN AUG 1 1999 ........GRAND FORKS JULY CLIMATOLOGICAL SUMMARY...... ....DATA TAKEN AT THE AIRPORT... .........TEMPERATURE DATA.......... HIGHEST FOR THE MONTH.. 93 ON DAY 28 LOWEST FOR THE MONTH.. 48 ON DAY 2 MONTHLY MEAN TEMP...... 69.1 DEPARTURE FROM NORMAL... -0.9 ..........DEGREE DAY DATA............... HEATING MONTH....... 18 DEPARTURE... -20 SEASON...... 19 DEPARTURE... -11 COOLING MONTH....... 152 DEPARTURE... -13 SEASON...... 232 DEPARTURE... -69 ...........PRECIPITATION...... TOTAL FOR THE MONTH......... 1.63 NORMAL MONTH TO DATE........ 2.72 TOTAL FOR THE YEAR.......... 14.28 NORMAL YEAR TO DATE......... 11.11 THE MONTH OF JULY IN GRAND FORKS WAS CHARACTERIZED BY TEMPERATURES 0.9 DEGREES SLIGHTLY COOLER THAN NORMAL. THIS WAS DUE TO A COOL EARLY PART OF THE MONTH...ALONG WITH NIGHTTIME TEMPERATURES SLIGHTLY COOLER THAN NORMAL. A TOTAL OF 1.63 INCHES OF RAIN FELL ON GRAND FORKS...OR 1.09 INCHES BELOW NORMAL. ONE REASON FOR THE BELOW NORMAL RAINFALL IS BECAUSE OF THE LOCATION OF THUNDERSTORMS IN THE REGION. THE SOUTHERN HALF OF THE RED RIVER VALLEY EXPERIENCED MORE RAIN DURING JULY...BECAUSE OF THE INCREASED AREAL COVERAGE AND HIGHER FREQUENCY OF THUNDERSTORMS.