Monthly Climatological Summary for Sep 2025 Name: MONTREAL@ST.LEONARD City: MONTREAL State: QUEBEC- CANADA Elevation: 50 ft Lat: N 45° 35' 13" Lon: W 073° 35' 18" 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 21.6 27.8 15:05 14.4 06:11 0.6 3.9 0.0 2.0 16.1 17:39 SE 2 22.5 28.3 15:59 17.2 05:30 0.1 4.3 0.0 3.1 20.9 16:34 WSW 3 22.4 28.2 17:38 17.2 04:16 0.1 4.3 0.0 3.6 22.5 13:19 SSW 4 21.2 28.5 15:59 16.8 23:58 0.0 2.9 19.2 9.5 46.7 16:08 SE 5 19.1 25.2 18:01 12.2 06:09 1.6 2.3 2.2 5.9 45.1 22:50 S 6 15.9 19.3 00:00 14.2 06:24 2.5 0.0 1.6 4.6 29.0 12:57 WSW 7 16.4 19.9 13:47 13.6 03:34 2.2 0.3 0.0 6.0 45.1 14:15 WSW 8 15.4 19.9 17:04 10.6 06:27 3.1 0.2 0.0 5.6 29.0 13:42 WSW 9 15.7 22.6 16:44 9.0 06:20 3.5 0.9 0.0 1.7 19.3 15:20 SW 10 18.1 24.7 15:29 10.4 06:33 2.1 1.9 0.0 2.0 19.3 15:37 WSW 11 18.5 24.3 16:25 14.0 23:58 1.4 1.5 0.0 2.7 24.1 12:53 N 12 15.7 21.4 16:44 9.9 05:57 3.1 0.5 0.0 2.3 16.1 09:11 ENE 13 18.5 24.2 17:05 13.2 06:49 1.6 1.8 0.0 3.0 22.5 17:51 WSW 14 19.6 24.1 15:55 15.6 06:56 0.5 1.8 0.0 4.4 19.3 11:16 NNE 15 17.6 23.5 16:01 12.1 06:33 1.9 1.2 0.0 2.8 17.7 09:14 NNE 16 18.8 25.1 15:12 12.2 06:31 1.7 2.2 0.0 1.8 14.5 14:07 NE 17 19.9 26.6 14:57 13.4 06:33 1.3 2.9 0.0 2.5 16.1 13:47 SW 18 20.8 26.9 14:57 15.8 01:52 0.5 3.0 0.0 6.5 30.6 15:43 W 19 15.4 20.4 15:45 10.8 23:45 3.1 0.2 0.0 4.8 22.5 01:43 NW 20 12.4 19.2 16:55 5.6 06:36 5.9 0.0 0.0 1.6 14.5 00:02 WNW 21 15.1 23.6 16:03 5.6 06:48 4.4 1.2 0.0 2.7 25.7 18:03 ESE 22 17.7 21.7 14:41 15.3 04:20 1.2 0.6 2.4 2.9 20.9 08:17 SE 23 17.9 20.7 18:05 16.2 09:45 0.8 0.4 3.4 1.0 12.9 09:45 NE 24 17.2 22.4 16:15 13.3 08:10 1.8 0.7 0.0 4.8 20.9 16:26 NE 25 16.9 17.9 15:19 15.5 03:10 1.4 0.0 4.2 3.5 16.1 11:20 NE 26 17.6 22.1 15:35 14.1 23:56 1.3 0.6 0.0 6.7 27.4 11:24 WSW 27 16.2 21.9 15:00 9.2 06:37 2.9 0.8 0.0 1.9 16.1 10:13 SE 28 20.2 25.0 15:31 17.1 23:53 0.2 2.2 0.0 6.3 33.8 12:48 W 29 19.8 26.3 16:23 14.0 06:50 1.2 2.6 0.0 8.0 33.8 14:02 WSW 30 16.2 19.0 00:00 11.3 23:59 2.1 0.0 0.0 3.7 27.4 16:06 NNE ---------------------------------------------------------------------------------- 18.0 28.5 4 5.6 20 54.1 45.2 33.0 3.9 46.7 4 WSW Max >= 32.0: 0 Max <= 0.0: 0 Min <= 0.0: 0 Min <= -18.0: 0 Max Rain: 19.2 on day 4 Days of Rain: 6 (>= 0.1 mm) 1 (>= 5.0 mm) 0 (>= 20.0 mm) Heat Base: 18.3 Cool Base: 18.3 Method: Integration