XGY   Grimsby Mountain, ON
Weather Observed At   43-11  N    79-34  W
2023
Note all stats on this page use calendar days (0000-2359). MSC stats use "climate days" (normally 0800-0759).
** >> NEW NORMALS INTRODUCED COVERING 2004-2020 PERIOD << **   

 TEMPERATURE  (°C) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD HIGHEST : 17.8
 19.7
 27.0
 30.6
 37.2
 36.1
 41.1
 40.6
 38.3
 32.0
 25.8
 21.0
 41.1
  HIGHEST : 5.6
16.2
 11.9
29.2
 
  
  
  
  
  
  
  
 29.2
   Date : 1/17 2/153/26 4/14
                4/14
   Time : 1604 1430
 1537
  1446                 1446
   Normal :
11.9
10.8
17.5
25.031.132.834.0
32.8
31.426.118.512.8
34.8
  AVERAGE HIGH : 2.0
4.3
 6.0
 14.0
 
  
  
  
  
  
  
  
  
   Normal  :
0.0
 		1.05.6
 		12.1
 		19.724.8
 		27.9
 		26.722.815.6
 		8.9
 		2.7
 		14.0
  AVERAGE :
 -0.3
 		0.0
 		2.0
 		8.9
 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
   Departure from Normal  :
+3.5
+3.3 +0.7 +1.7  
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
   Normal  :
-3.8
 -3.3
 1.37.2
 14.0
 19.5
 22.6
 21.6
 18.0
 11.3
 4.9
 -0.5
 9.4
  AVERAGE LOW : -2.6
 -4.3
 -2.0
 3.8
 
  
  
  
  
  
  
  
  
   Normal  :
-7.6
 		-7.5
 		-3.0
 		2.38.4
 		14.2
 		17.4
 		16.6
 		13.2
 		7.0
 		0.9
 		-3.7
 		4.9
  LOWEST : -12.1
 -16.5
-7.1
 -3.5
 
  
  
  
  
  
  
  
 -16.5
   Date : 1/15
2/43/19
  4/2
  
  
  
  
  
  
  
  
 2/4
   Time : 0727 0449 0649
 0657
                0449
   Normal :
-18.4 -17.4-12.1 -3.9 1.47.812.011.26.0-0.7-7.0 -12.2-20.5
  RECORD LOWEST : -27.8 -29.4
-22.8
-17.2
-4.4
1.7
5.6
1.1
-0.6
-9.4
-15.6
-28.9
-29.4
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR

 REL. HUMIDITY  (%) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST : 100
 100
 99
 100
 
  
  
  
  
  
  
  
 100
   Date : 1/3+
2/93/31
 4/4+
 
  
  
  
  
  
  
  
 1/3+
   Time : 1745
1337
1951
  0930
  
  
  
  
  
  
  
  
 1745
  AVERAGE :
84
 		72
71
 		69
 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
   Departure from Normal  :
+9 -1 +2 +2    
              
   Normal  :
75
73
 69
 67
 68
 70
 70
 72
 74
 76
 75
 78
 72
  LOWEST : 45
 34
 22
  17
  
  
  
  
  
  
  
  
 17
   Date : 1/31
2/3
 3/15
  4/14
  
  
  
  
  
  
  
  
 4/14
   Time : 1338
1229
 1442
  1537
  
  
  
  
  
  
  
  
 1537
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR

 DEW POINT  (°C) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST : 4.8
 7.3
 10.3
  14.6
  
  
  
  
  
  
  
  
 14.6
   Date : 1/17
2/15
 3/25
 4/16
 
  
  
  
  
  
  
  
 4/16
   Time : 1604
1323
 1549
  2001
  
  
  
  
  
  
  
  
 2001
  AVERAGE :-2.6
 		-4.8
 		-3.0
 		 3.0
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
   Departure from Normal  :
+4.7
 		+2.6
 		+1.1
 		+2.1
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
   Normal : -7.3
-7.4
 -4.1
 0.9
 7.7
 13.5
 16.5
 16.2
 13.3
 7.2
 1.0
 -3.7
 4.5
  LOWEST : -15.9
 -25.6
 -13.3
 -14.0
 
  
  
  
  
  
  
  
 -25.6
   Date : 1/31
2/3
 3/15 4/2
  
  
  
  
  
  
  
  
 2/3
   Time : 0726
0914
 1442
  0700
  
  
  
  
  
  
  
  
 0914
  Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
 
 PRECIPITATION (mm) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD HIGH TOTAL : 147.7
131.1
146.0
180.1
193.8
189.6
184.6
202.7
224.3
231.9
239.4
133.6
1164.6
  TOTAL :93.5
 93.4
 120.6
 116.9
 
  
  
  
  
  
  
  
  
   % of Normal  :
129% 134%
156%
116%
                 
   Normal :
72.6
 69.8
 77.1
 100.980.983.2
 79.377.2
 76.6101.8
 75.4
 85.3
 980.1
  RECORD LOW TOTAL : 9.5
17.2
18.7
15.7
12.7
14.4
13.9
11.4
7.1
9.9
10.7
19.9
540.4
  RAIN / SNOW RATIO (%) :69/31
55/45
47/53
99/1
 
 
 
 
 
 
 
 
 
   Normal :
59/41
 		43/57
 		66/34
 		92/8100/0-
 		--
 		-100/0
 		88/12
 		64/36
 		85/15
  EVAPOTRANSPIRATION :-11.8
-32.3
 -29.8
  -78.5
  
  
  
  
  
  
  
  
  NET MOISTURE : +81.7
 		+61.1
 		+90.8
 		+22.4
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
   
 RAINFALL (mm) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD HIGH TOTAL : 130.9
100.0
144.2
175.5
193.8
189.6
184.6
202.7
224.3
231.9
230.0
127.4
1027.2
  TOTAL :64.3
51.3
56.4
116.3
 
 
 
 
 
 
 
 
 
   Normal :
43.0
29.7
51.1
92.680.983.2
79.377.2
76.6101.4
66.254.3
835.5
  RECORD LOW TOTAL : 0
0
4.3
14.5
12.7
14.4
13.9
11.4
7.1
9.9
10.7
0
447.5
  RECORD IN 1 DAY : 52.1
40.6
 51.6
 52.0
 68.6
 78.0
 72.6
 90.2
 77.0
 115.3
 60.2
 57.4
 115.3
  MOST IN 1 DAY : 32.1
 30.6
 15.3
  25.4
  
  
  
  
  
  
  
  
 32.1
   Date : 1/4
2/9
 3/25
  4/1
  
  
  
  
  
  
  
  
 1/4
  HEAVIEST RAIN RATE : (mm/h) 42.4
 56.0
 29.8
 198.6
 
  
  
  
  
  
  
  
 198.6
   Date : 1/4
2/17
 3/25
 4/5
 
  
  
  
  
  
 
  
 4/5
   Time : 1811
0209
 1429
  1147
  
  
  
  
  
  
  
  
 1147
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
 
 SNOWFALL (cm) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD HIGH TOTAL : 98.6
110.4
74.8
40.0
2.5
0
0
0
0
18.0
42.0
107.3
246.4
  TOTAL :29.6
 21.0
 44.0
 TR
 
 		-
 		-
 		-
 		-
 		 
 		 
  
  
   % of Normal  :
86% 54%
200%
0%
                 
   Normal :
34.6
38.7
22.0
6.2
TR
0
0
0
0
0.1
8.1
30.1
139.8
  RECORD LOW TOTAL : 3.0
0.4
0
0
0
0
0
0
0
0
0
3.8
54.7
  RECORD IN 1 DAY : 50.8
40.6
38.1
27.8
2.5
-
-
-
-
11.4
22.9
61.0
61.0
  MOST IN 1 DAY : 12.8
 9.8
 20.6
 TR
 
 -
 -
 -
 -
  
  
  
 20.6
   Date : 1/25
 2/27
 3/10
  4/17+
-
-
-
-

 
  
 3/10
  WATER EQUIVALENT RATIO : 10.1 5.0
6.9
TR
 
-
-
-
-

 
 
 
   Normal :
11.7
 		9.6
 		8.5
 		7.6
 		1.7-
 		-
 		-
 		-
 		1.5
 		8.8
 		9.7
 		10.0
  HIGHEST SNOW ON GROUND : 14
 17
 36
  TR
  
 		-
 		-
 		-
 		-
 
  
 36
   Date : 1/26
 2/27
 3/10
  4/24
-
 -
 -
 -
 
  
 3/10
   Normal : 19272240-
- - -
0
51531
  AVERAGE SNOW ON GROUND : 3
4
 18
  0
-
-
-
-

  
  
  
   Normal :
8148TR
0-
- - -
0
143
  SNOW ON GND. AT END OF MONTH : 7
13
0
0

-
-
-
-

 
 
 
   Normal :
121520
0-
- - -
0
16
  Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
 
 WIND (kt / °)
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST VELOCITY / SPEED :
26
 32
 34
 26
 
  
  
  
  
  
  
  
 34
                                   / DIRECTION : 030
060
 240
  020
  
  
  
  
  
  
  
  
 240
  Date : 1/13
2/23
 3/25
  4/1
  
  
  
  
  
  
  
  
 3/25
  Time : 0113
0132
 2123
  2302
  
  
  
  
  
  
  
  
 2123
  AVERAGE DAILY PEAK GUST :
15.3
21.2
 18.8
 16.2
 
  
  
  
  
  
  
  
  
  PEAK WIND DIRECTION : (days)











   NORTH :
4
 5
 8
 5
 
  
  
  
  
  
  
  
 22
   NORTHEAST :
10
 5
 6
  10
  
  
  
  
  
  
  
  
 31
   EAST :
2
 1
 3
 1
 
  
  
  
  
  
  
  
 7
   SOUTHEAST :
-
 -
 -
-
  
  
  
  
  
  
  
  
 0
   SOUTH :
-
 -
 1
 3
 
  
  
  
  
  
  
  
 4
   SOUTHWEST :
11
 15
 11
  10
  
  
  
  
  
  
  
  
 47
   WEST :
4
 2
 2
 1
 
  
  
  
  
  
  
  
 9
   NORTHWEST :
-
 -
 -
 -
  
  
  
  
  
  
  
  
 0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  
 PRESSURE (in.)Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST S.L.P.  :
 30.45
 30.70
 30.51
 30.64
 
  
  
  
  
  
  
  
 30.70
   Date :
1/7
2/24
 3/8
 4/8
 
  
  
  
  
  
  
  
 2/24
   Time :
2245
2045
 0930
  0845
  
  
  
  
  
  
  
  
 2045
   Normal :
30.67 30.56 30.55 30.47 30.3730.2330.2430.25 30.41 30.46 30.56 30.62 30.75
  AVERAGE S.L.P. :
30.02
 		30.03
 		30.04
 		 30.01
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
   Departure from Normal  :
0.00 +0.01
 -0.01
 		+0.06
                  
   Normal :
30.02
30.02
30.05
29.95
29.96
29.91
29.92
29.95
30.04
30.00
30.05
30.03
29.99
  LOWEST S.L.P. :
 29.38
 29.37
 29.31
 29.28
 
  
  
  
  
  
  
  
 29.28
   Date :
1/26
2/28
 3/4
  4/1
  
  
  
  
  
  
  
  
 4/1
   Time :
 0045
0115
 0100
 0600
 
  
  
  
  
  
  
  
 0600
   Normal :
29.27 29.3129.37 29.2829.5129.51 29.59 29.6029.50 29.37 29.30 29.3129.11
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  
 DAYS WITH :
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  THUNDERSTORM :
1
1
 2
3
 
  
  
  
  
 
  
  
7
   Normal :
001246763
2
 00 31
  RAIN :
 14
 8
 11
 16
 
  
  
  
  
  
  
  
 49
   Normal :
7510141615141312
18129146
  DRIZZLE :
 5
 2
 4
  1
  
  
  
  
  
  
  
  
12
   Normal :
213221002
33423
  HAIL :
 -
 -
 -
 1
 
  
  
  
  
  
  
  
1
   Normal :
- - - 00000-
0- - 1
  FREEZING RAIN : 3
 6
 1
 -
 
 -
 -
 -
 -
  
  
  
10
   Normal :
1110- - - - -
- 014
  FREEZING DRIZZLE : -
 3
 -
-
  
 -
 -
 -
 -
  
  
  
3
   Normal :
110- - - - - -
- 013
  ICE PELLETS :
 4
 4
 2
 1
  
 -
 -
 -
 -
  
  
  
11
   Normal :
111
10
- - - -
0017
  SNOW : 17
 11
 14
 3
  
 -
 -
 -
 -
  
  
  
45
   Normal :
21171150- - - -
171678
  SNOW PELLETS :  -
 1
 -
 1
  
 -
 -
 -
 -
  
  
  
2
   Normal :
01000-
- - -
0103
  SNOW GRAINS : 5
1
 -
-
 
-
-
-
-
 
  
 
6
   Normal :
10
0- - -
- - -
0012
  ICE CRYSTALS : -
-
 -
-
-
-
-
-
-
-
-
 
0
   Normal :
00
-
- - - - - -
- - 0
0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR

 DAYS WITH : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  FOG : 5
1
 1
6
 
 
  
 
 
 
  
 
13
  FREEZING FOG : -
-
 -
-
 
-
-
-
-
 
  
 
0
  FOG OR FREEZING FOG : 5
 		1
 		1
 		6
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		 
 		13
   Normal :
224442111
33329
  BLOWING SNOW : -
2
 1
-
 
-
-
-
-
 
 
 
3
   Normal :
1100- - - - -
- 003
  HAZE : -
-
 2
2
 
 
 
 
 
 
  
 
4
   Normal :
012143543
01226
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  The following are rare. Any occurrences will be noted below : Funnel Cloud, Waterspout, Ice Fog, Smoke, Dust, Blowing Dust, Blowing Sand, Aurora, Earthquake.
  None.

 BRIGHT SUNSHINE (h)
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  BRIGHT SUNSHINE DURATION :
44110 170 212                  
   % of Normal :
61%
92%
93%
 103%  
 
 
 
 
 
  

   Normal :
72
119
182
205
255
256
246
219
180
129
8148
1992
  MAXIMUM SOLAR RADIATION : (W/m²)
 644
 857
 1026
 1056
 
  
  
  
  
  
  
 
 1056
   Date :
1/31
2/24
 3/30
 4/23
 
  
  
  
  
  
  
  
 4/23
   Time :
1252
1259
 1347
 1226
  
  
  
  
  
  
  
  
 1226
   Normal :
6758601022 1209 1192 1245 1193 1119 1030 896 687 531 1271
  AVERAGE DAILY MAX. SOLAR RADIATION : (W/m²)
248535 662 790                  
   Normal :
359521675844909994956924761576417284685
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
 
 DARK SKY (m/a"2) Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  DARKEST SKY :
19.85
19.95
 19.88
 20.01
  
  
  
  
  
  
  
  
 20.01
   Date :
1/24
2/13+
 3/19
 4/18
 
  
  
  
  
  
  
  
 4/18
   Time :
0218
0030
 0134
  0125
  
  
  
  
  
  
  
  
 0125
   Normal :
20.24
20.06
20.27
20.25
20.27
20.32
20.31
20.43
20.44
20.48
20.32
20.23
20.61
  AVERAGE DAILY DARKEST SKY :
18.53
 19.18
 18.96
 19.51
  
  
  
  
  
  
  
  
  
   Normal :
19.1719.1219.4419.5819.7119.8219.9219.9819.9019.7519.5519.1119.59
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
 
All times are local.
+ indicates first of multiple occurences (on different dates).
End of month S.O.G. defined as S.O.G. at 7 AM on last day of the month.
Days With Precipitation include trace amounts.
Records from Grimsby 1910-13, Rock Chapel 1914-1966/04/17, Royal Oak 1966/04/18-1974, Grimsby 1975-1985/08/20,
     Rittenhouse 1985/08/21-1993/09/30, Vineland 1993/10/01-2003/09/17, and Grimsby Mountain 2003/09/18 to present.




21