MONTHLY CLIMATOLOGICAL SUMMARY for SEP. 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 23.6 31.2 4:30p 17.1 12:45a 0.1 5.5 0.0 7.4 46.7 1:30p SSW 2 18.4 23.6 4:00p 13.1 7:30a 1.3 1.4 0.0 3.4 32.2 1:15a N 3 15.8 20.1 4:15p 13.1 12:00m 2.7 0.2 1.8 1.6 20.9 2:15p ENE 4 17.9 27.6 3:30p 9.6 6:45a 2.9 2.5 0.0 0.5 17.7 1:15p NE 5 17.9 23.1 2:45p 14.2 12:00m 1.4 1.0 1.0 1.4 29.0 3:45p ENE 6 16.7 22.7 3:15p 9.8 7:30a 2.8 1.2 0.0 0.2 9.7 12:45a NE 7 14.6 17.9 2:30p 8.7 12:00m 3.7 0.0 1.3 3.4 41.8 3:15p N 8 9.9 14.7 4:30p 6.6 3:45a 8.4 0.0 0.0 1.6 20.9 9:45a N 9 12.3 20.4 4:15p 6.2 8:00a 6.1 0.1 0.0 0.8 25.7 5:30p SW 10 10.6 16.7 12:30p 4.3 7:15a 7.7 0.0 1.8 3.7 49.9 10:45p SW 11 7.6 12.2 4:00p 4.3 7:00a 10.7 0.0 0.0 6.9 48.3 1:30a N 12 11.1 18.2 5:45p 4.4 7:15a 7.2 0.0 0.0 2.9 43.5 11:45a SSW 13 7.5 13.3 12:30a 3.1 11:45p 10.8 0.0 1.5 6.8 40.2 12:15p N 14 6.1 12.4 4:15p 1.7 2:30a 12.0 0.0 0.0 1.3 25.7 12:15a N 15 10.5 22.0 5:45p 0.7 3:15a 8.5 0.6 0.0 4.5 46.7 2:15p SSW 16 15.9 29.9 3:00p 4.0 7:15a 5.5 3.1 0.0 4.2 38.6 3:30p SSW 17 18.7 26.6 3:15p 11.8 5:45a 1.9 2.3 0.0 1.8 25.7 3:30p SSW 18 12.3 17.1 12:15a 9.4 11:15p 6.0 0.0 0.0 4.3 32.2 2:45p N 19 12.2 19.9 3:45p 6.6 8:30a 6.2 0.1 0.0 2.1 20.9 11:15a N 20 12.3 14.0 10:30p 10.1 9:30a 6.0 0.0 5.3 0.8 27.4 1:15p SSW 21 13.1 18.2 4:30p 6.9 12:00m 5.3 0.0 1.0 1.9 29.0 3:15p SSW 22 13.1 24.6 4:45p 0.9 7:15a 6.7 1.5 0.0 1.6 32.2 3:30p SSW 23 18.1 27.3 2:30p 11.9 8:00a 2.1 1.9 1.0 3.2 33.8 10:15p N 24 10.7 14.2 12:15a 6.6 10:45p 7.6 0.0 26.2 4.3 29.0 2:45p N 25 8.4 12.4 5:15p 6.0 11:45p 9.9 0.0 0.3 1.6 22.5 4:30a N 26 11.2 20.3 4:00p 4.9 1:30a 7.2 0.2 0.0 1.3 20.9 11:15a SW 27 10.2 15.4 3:30p 4.2 12:00m 8.1 0.0 0.3 2.7 35.4 12:00p N 28 10.8 19.7 4:15p 1.7 4:30a 7.6 0.1 0.0 1.8 32.2 12:00p S 29 19.1 27.1 5:30p 13.3 8:00a 1.7 2.4 0.0 5.5 48.3 6:00p SSW 30 12.8 20.7 12:15a 5.3 12:00m 5.6 0.1 0.0 6.1 41.8 7:00a N ------------------------------------------------------------------------------------- 13.3 31.2 1 0.7 15 173.7 24.2 41.4 3.0 49.9 10 N SEPTEMBER 2007 HIGHLIGHTS Average temp: 13.3c ( +1.0C above normal) Total Precip: 41.4 mm ( 11 mm below normal) Seasonably variable, and dry.. September 2007 was a fairly typical fall month, with varying episodes of warm and cool outbreaks common in the transition season between summer and the upcoming colder months. The main story was the dryness that was evident most of September before a significant rainfall of 20 to 35 mm finally occurred late in the month. Even so, the month still ended up 10 to 20 mm drier than average for September over most of the city, coming off a very dry August. That has left soil conditions pretty dry in much of the Winnipeg area, although areas over the north end of the city have received more substantial rainfall over the past 2 months. Since April 1st, rainfall in Winnipeg has totalled 326 mm at Winnipeg airport to the end of September, about 86% of the 30 year average of 378 mm. Here at my station in Charleswood, I've recorded 347 mm (92%) between April 1st and Sept 30th. The rainfall this growing season however was highly skewed with very wet conditions in May and June followed by very dry conditions in August and September. Overall, soil moisture levels are below normal but they could have been much worse had we not had the wet start in May and June. Temperature wise, September started off with a 30C plus day on the 1st, but cooler conditions quickly followed with generally below normal temperatures during the first half of the month. The season's first frost was officially recorded at Winnipeg airport on the 14th with a low of -1.2C, although much of the rest of the city was spared from below freezing temperatures. Here at my station, the monthly low was 0.7C on the 15th with a touch of frost. The second half of the month turned warmer with generally above normal temperatures right to the end of the month. The weather was especially nice on the weekends with 27C plus temperatures on the last 3 weekends of the month, including the city's last 30C day on the 16th. Overall, a slightly warmer and drier than normal beginning to autumn.