MONTHLY CLIMATOLOGICAL SUMMARY for JUL. 2007 NAME: Charleswood CITY: Winnipeg STATE: MB ELEV: 235 m LAT: 49° 54' 00" N LONG: 97° 18' 00" W TEMPERATURE (°C), RAIN (mm), WIND SPEED (km/h) HEAT COOL AVG MEAN DEG DEG WIND DOM DAY TEMP HIGH TIME LOW TIME DAYS DAYS RAIN SPEED HIGH TIME DIR ------------------------------------------------------------------------------------ 1 19.9 23.3 1:45p 18.2 8:00a 0.0 1.7 16.5 0.6 20.9 6:15a ENE 2 22.2 29.9 4:15p 15.3 6:45a 0.4 4.3 0.0 0.6 16.1 10:45a NNW 3 23.2 30.4 2:45p 18.1 3:30a 0.0 4.9 4.8 1.1 20.9 6:45p NNW 4 21.5 27.2 3:15p 15.1 5:30a 0.5 3.7 0.0 1.3 27.4 2:15p NNW 5 21.3 27.2 3:15p 15.3 4:45a 0.6 3.5 0.0 2.6 27.4 11:15a N 6 22.3 29.2 3:30p 13.9 6:00a 1.0 4.8 0.0 2.9 29.0 3:45p SSW 7 23.7 31.2 4:15p 18.9 6:30a 0.0 5.4 0.0 4.2 29.0 10:30p SSW 8 21.4 27.3 1:45p 15.9 12:00m 0.3 3.4 0.0 4.3 29.0 3:45p N 9 17.4 23.6 1:30p 11.6 6:00a 2.0 1.2 6.1 1.3 16.1 11:30a N 10 15.8 22.4 2:15p 12.8 12:00m 2.9 0.4 12.7 4.8 33.8 11:00a N 11 15.9 21.6 3:45p 10.6 5:45a 2.9 0.6 0.0 4.2 45.1 4:00p NW 12 17.9 23.8 4:00p 11.4 3:00a 2.0 1.6 0.0 4.2 35.4 12:00p N 13 17.6 25.9 4:00p 12.6 1:00a 2.3 1.6 7.4 3.1 53.1 6:30p N 14 18.5 25.1 3:30p 13.0 5:45a 1.5 1.7 2.0 2.4 20.9 2:00p N 15 16.9 21.6 4:00p 11.7 6:00a 2.2 0.8 0.0 0.2 16.1 2:45p SW 16 18.7 26.6 4:00p 9.2 6:15a 2.5 2.9 0.0 0.6 12.9 12:00p SW 17 22.2 29.2 4:30p 15.9 3:15a 0.5 4.4 0.0 0.2 12.9 2:00p SW 18 22.4 30.1 4:15p 16.3 4:15a 0.4 4.5 0.0 2.7 30.6 4:45p N 19 19.4 25.7 3:45p 12.7 6:15a 1.5 2.6 0.0 1.3 17.7 12:45a N 20 20.0 27.8 4:15p 10.9 6:00a 1.9 3.6 0.0 2.6 30.6 3:00p SSW 21 22.4 29.2 4:15p 14.8 5:30a 0.7 4.8 0.0 3.1 32.2 11:30a SSW 22 26.6 33.5 2:15p 20.4 12:00m 0.0 8.3 0.0 1.4 22.5 12:15a SSW 23 25.9 33.6 4:30p 17.9 5:45a 0.0 7.7 0.0 1.6 30.6 3:00p SW 24 28.3 34.8 3:15p 22.5 6:15a 0.0 10.0 0.0 3.9 33.8 5:30p SSW 25 26.2 34.8 3:45p 20.2 12:00m 0.0 7.9 18.5 5.1 43.5 7:15p SSW 26 23.6 29.6 4:15p 19.1 12:00m 0.0 5.2 3.0 4.8 32.2 7:30p N 27 21.8 29.5 3:30p 14.2 6:15a 0.9 4.4 0.0 1.8 22.5 12:45p N 28 22.1 29.4 3:45p 13.7 6:15a 0.8 4.5 0.0 2.3 27.4 4:15p SSW 29 25.2 35.2 4:30p 16.4 5:45a 0.3 7.2 0.0 2.9 30.6 4:00p SW 30 26.3 33.4 3:00p 20.1 3:30a 0.0 8.0 0.0 5.5 35.4 4:30p SSW 31 27.2 34.3 4:15p 21.0 6:15a 0.0 7.9 0.0 6.8 33.8 6:30p SSW ------------------------------------------------------------------------------------- 21.7 35.2 29 9.2 16 28.1 133.4 71.1 2.7 53.1 13 N JULY 2007 HIGHLIGHTS.. Seasonable first half.. hot and dry second half.. July 2007 was marked by a distinct split personality.. the first half of the month featured generally normal temperatures and rainfall with no major extremes. The second half of the month however was marked by very hot and humid conditions and a lack of rainfall, with 2 heat waves to end the month that saw temperatures in the mid 30s and humidex values in the mid 40s. From the 17th to the 31st, the mean temperature at my location was 24C, some 4 degrees above normal. This compares to the first two weeks of the month which averaged a normal 20C. The result was a month that finished about two degrees above normal, but was considerably biased by the warm second half. The average high temperature in the last two weeks was a sizzling 31.3c, thanks to 8 days of 30+ temperatures, including a 35c reading on July 25th that was accompanied by Winnipeg's hottest humidex on record.. 48C thanks to a dewpoint of 26C at the time. The same day saw Carman, MB set a national humidex record of 53C thanks to an incredible 30c dewpoint. Rainfall for the month was generally near normal with about 70 mm at my location (60 mm at Winnipeg airport). However, the rain was mainly concentrated in the first half of the month, with about 50 mm in the first two weeks spread over 5 or 6 rain events. The second half of the month saw only one rain event, when about 20-25 mm of rain fell during thunderstorms on the 25th that brought an end to the month's first heat wave. The hot dry weather has started to produce heat stress in area crops with depleting soil moisture, a considerable change from the wet conditions experienced during May and June. All in all.. a sizzling end to a warm July.