Monthly Climatological Summary for Dec 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 -5.0 2.4 00:00 -9.2 23:05 23.3 0.0 0.4 9.4 43.5 02:49 W 2 -7.5 -5.6 14:00 -10.1 23:48 25.7 0.0 0.0 2.5 14.5 17:23 NNE 3 -5.6 0.1 20:53 -10.8 07:06 23.9 0.0 0.0 3.4 30.6 21:35 S 4 -7.8 0.7 01:05 -15.1 23:40 26.1 0.0 0.0 12.6 49.9 13:47 W 5 -10.7 -5.7 23:28 -15.9 04:36 29.0 0.0 0.0 2.7 24.1 00:45 SSW 6 -3.1 0.3 20:06 -6.0 23:58 21.4 0.0 0.0 4.9 38.6 20:52 SW 7 -10.6 -6.0 00:00 -13.4 06:20 28.9 0.0 0.0 1.9 19.3 00:26 NNW 8 -14.2 -11.3 00:19 -16.8 06:56 32.5 0.0 0.0 6.8 32.2 04:54 W 9 -11.9 -7.3 16:23 -17.4 04:26 30.0 0.0 0.0 1.6 19.3 16:44 SE 10 -6.6 -3.7 14:51 -10.1 00:25 24.9 0.0 0.0 1.7 20.9 16:45 NNE 11 -8.1 -4.7 02:44 -10.5 12:11 26.4 0.0 0.0 14.5 46.7 09:56 WSW 12 -7.8 -4.4 14:33 -10.2 03:59 26.1 0.0 0.0 14.3 48.3 05:30 WSW 13 -6.3 -1.9 18:31 -11.0 04:04 24.6 0.0 0.0 2.5 30.6 20:24 SW 14 -8.4 -5.4 00:00 -12.7 22:26 26.7 0.0 0.0 5.0 29.0 14:43 W 15 -10.3 -5.7 23:43 -14.4 03:43 28.6 0.0 0.0 8.7 30.6 08:59 WSW 16 -3.4 -1.1 14:16 -5.9 04:47 21.7 0.0 0.0 6.2 32.2 19:56 SW 17 0.7 3.4 12:52 -2.7 00:00 17.6 0.0 0.6 9.1 33.8 13:15 SW 18 1.3 7.1 20:27 -5.5 05:54 17.0 0.0 0.0 4.3 38.6 22:57 SE 19 5.4 12.8 10:46 -4.0 23:26 12.9 0.0 13.0 17.2 70.8 08:23 SSW 20 -5.1 0.5 21:52 -8.7 07:50 23.4 0.0 0.0 10.8 57.9 02:04 WSW 21 -2.5 3.7 06:04 -10.0 23:56 20.8 0.0 0.0 15.1 67.6 06:19 W 22 -9.7 -7.0 18:31 -12.4 07:14 28.0 0.0 0.0 4.6 25.7 05:47 WSW 23 -7.8 -6.5 22:27 -9.3 00:03 26.1 0.0 0.0 3.5 24.1 16:13 NE 24 -5.2 -2.9 14:11 -7.6 00:09 23.5 0.0 0.0 5.6 25.7 21:04 WNW 25 -7.6 -4.2 11:00 -14.8 23:51 25.9 0.0 0.0 6.4 38.6 15:28 WNW 26 -15.7 -13.2 23:54 -18.4 07:24 34.0 0.0 0.0 3.3 32.2 22:46 NE 27 -11.1 -8.9 14:32 -13.2 00:00 29.4 0.0 0.0 3.5 25.7 00:00 NE 28 -9.8 -7.1 23:58 -12.8 06:45 28.1 0.0 0.0 2.4 22.5 18:05 NE 29 -1.5 3.6 14:28 -7.2 00:00 19.8 0.0 5.4 9.2 61.2 15:31 WSW 30 -12.1 -5.2 00:00 -14.8 23:35 30.4 0.0 0.0 20.1 54.7 04:37 WSW 31 -11.1 -7.8 16:30 -14.9 00:14 29.4 0.0 0.0 10.2 45.1 00:42 WSW ---------------------------------------------------------------------------------- -7.1 12.8 19 -18.4 26 786.1 0.0 19.4 7.2 70.8 19 WSW Max >= 32.0: 0 Max <= 0.0: 21 Min <= 0.0: 31 Min <= -18.0: 1 Max Rain: 13.0 on day 19 Days of Rain: 4 (>= 0.1 mm) 2 (>= 5.0 mm) 0 (>= 20.0 mm) Heat Base: 18.3 Cool Base: 18.3 Method: Integration