Monthly Climatological Summary for Sep 2026 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 20.2 25.1 16:27 15.6 05:28 0.5 2.4 0.0 4.9 25.7 13:24 NE 2 20.0 24.3 14:00 14.2 06:27 0.7 2.4 7.0 7.7 41.8 15:57 SE 3 22.7 28.0 15:21 18.7 02:20 0.0 4.4 0.2 5.0 40.2 00:34 SW 4 21.1 24.7 11:50 18.6 05:04 0.0 2.8 0.2 1.6 16.1 10:46 W 5 18.3 21.5 16:44 14.8 23:52 0.7 0.7 0.6 4.9 35.4 19:59 NE 6 18.2 23.9 17:09 13.1 06:37 1.7 1.6 0.0 3.2 24.1 15:27 NNW 7 20.8 26.7 14:08 14.2 06:20 1.0 3.5 0.0 3.9 24.1 12:32 WNW 8 19.5 23.2 15:56 16.6 05:08 0.4 1.5 6.2 2.5 19.3 11:21 ENE 9 18.0 21.2 15:45 14.3 07:13 1.3 1.0 20.0 4.0 30.6 22:36 SSE 10 19.9 22.8 14:00 14.5 23:49 0.4 2.0 0.0 12.0 51.5 13:25 W 11 15.2 20.0 17:26 10.8 06:34 3.2 0.2 0.0 5.8 30.6 13:32 W 12 18.9 25.6 16:11 11.9 06:25 1.7 2.4 0.0 4.0 25.7 12:53 SSE 13 21.4 25.6 16:36 19.2 23:54 0.0 3.1 11.4 5.0 38.6 17:34 SSW 14 15.9 19.3 15:24 12.1 23:42 2.4 0.1 0.0 6.6 35.4 02:20 W 15 14.4 19.4 14:06 7.5 05:48 3.9 0.0 0.0 2.6 19.3 12:29 SE 16 20.5 25.7 15:04 17.1 03:40 0.3 2.5 0.0 3.1 22.5 14:59 SW 17 17.8 21.7 15:38 14.3 05:56 1.2 0.7 0.0 1.1 16.1 09:32 NNE 18 16.7 20.2 16:45 11.3 23:59 2.0 0.3 0.0 4.9 27.4 17:10 WNW 19 12.4 18.1 16:41 6.6 06:37 5.9 0.0 0.0 1.7 17.7 09:48 ENE 20 13.9 19.4 15:35 9.6 07:01 4.4 0.0 0.0 1.3 16.1 15:51 E 21 12.9 16.2 15:34 9.4 07:43 5.4 0.0 0.0 3.9 24.1 21:30 N 22 12.2 17.2 16:14 7.2 05:04 6.0 0.0 0.0 3.2 24.1 15:03 NE 23 13.7 19.9 15:23 7.9 04:08 4.8 0.2 0.0 2.6 22.5 14:47 NE 24 14.4 22.1 15:58 7.3 05:52 4.6 0.7 0.0 1.4 16.1 12:51 NE 25 16.8 24.3 15:49 10.2 05:27 3.0 1.5 0.0 2.4 22.5 16:13 NNE 26 17.6 23.2 14:52 13.0 06:37 2.0 1.3 0.0 4.9 38.6 15:09 NNE 27 17.1 20.3 13:39 14.4 03:44 1.4 0.3 0.0 9.0 40.2 13:42 NE 28 13.4 16.6 00:00 11.7 23:09 4.9 0.0 0.6 7.8 32.2 11:40 NE 29 13.9 18.6 16:58 11.3 02:24 4.4 0.0 0.0 3.1 17.7 08:56 NW 30 15.0 19.5 16:02 10.8 05:14 3.4 0.1 0.0 2.9 17.7 11:01 SW ---------------------------------------------------------------------------------- 17.1 28.0 3 6.6 19 71.6 35.7 46.2 4.2 51.5 10 N Max >= 32.0: 0 Max <= 0.0: 0 Min <= 0.0: 0 Min <= -18.0: 0 Max Rain: 20.0 on day 9 Days of Rain: 8 (>= 0.1 mm) 4 (>= 5.0 mm) 1 (>= 20.0 mm) Heat Base: 18.3 Cool Base: 18.3 Method: Integration