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
30.2
32.2
32.5
 
 
 
 
 
32.5
   Date : 1/17 2/153/26 4/14
5/31 6/2
7/6           7/6
   Time : 1604 1430
1537
 1446 1435 1450 1405           1405
   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
19.2
23.6
27.5
 
 
 
 
 
 
   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
13.4
18.9
22.4
 
 
 
 
 
 
   Departure from Normal  :
+3.5
+3.3 +0.7 +1.7 -0.6 -0.6 -0.2  
 
 
 
 
 
   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
 7.6
 14.1
17.3
 
 
 
 
 
 
   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
1.8
8.8
13.6
 
 
 
 
 
-16.5
   Date : 1/15
2/43/19
 4/2
5/2
6/5
7/31
 
 
 
 
 
2/4
   Time : 0727 0449 0649
0657
0631 0248 0444           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
 95
100
98
 
 
 
 
 
100
   Date : 1/3+
2/93/31
4/4+
5/2+
6/25
7/2+
 
 
 
 
 
1/3+
   Time : 1745
1337
1951
0930
2116
0500
1249
 
 
 
 
 
1745
  AVERAGE :
84
72
71
69
62
70
74
 
 
 
 
 
 
   Departure from Normal  :
+9 -1 +2 +2 -6  0
+4            
   Normal  :
75
73
69
67
68
70
70
72
74
76
75
78
72
  LOWEST : 45
34
22
17
14
20
37
 
 
 
 
 
14
   Date : 1/31
2/3
3/15
 4/14
5/27
6/7
7/18
 
 
 
 
 
5/27
   Time : 1338
1229
1442
 1537
1837
1558
1420
 
 
 
 
 
1837
 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
 15.3
 22.1
24.9
 
 
 
 
 
24.9
   Date : 1/17
2/15
3/25
4/16
 5/20+
6/26
7/27
 
 
 
 
 
7/27
   Time : 1604
1323
1549
 2001
0333
1006
1214
 
 
 
 
 
1214
  AVERAGE :-2.6
-4.8
-3.0
3.0
5.2
12.5
17.6
 
 
 
 
 
 
   Departure from Normal  :
+4.7
+2.6
+1.1
+2.1
-2.5
-1.0
+1.1
 
 
 
 
 
 
   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
-7.1
-2.5
8.9
 
 
 
 
 
-25.6
   Date : 1/31
2/3
3/15 4/2
5/9
6/7
7/31
 
 
 
 
 
2/3
   Time : 0726
0914
1442
 0700
 1432
1603
2305
 
 
 
 
 
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
42.0
80.4
186.1
 
 
 
 
 
 
   % of Normal  :
129% 134%
156%
116%
 52%  97% 235%
           
   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
-113.9
-100.2
-99.1
 
 
 
 
 

  NET MOISTURE : +81.7
+61.1
+90.8
+22.4
 -71.9
 -19.8
+86.6
 
 
 
 
 
 
 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
 42.0
80.4
186.1
 
 
 
 
 
 
   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
21.6
30.0 41.8
 
 
 
 
 
41.8
   Date : 1/4
2/9
3/25
4/1
5/20
6/12
7/29
 
 
 
 
 
7/29
  HEAVIEST RAIN RATE : (mm/h) 42.4
56.0
29.8
198.6
35.6
56.4
155.6
 
 
 
 
 
198.6
   Date : 1/4
2/17
3/25
4/5
5/20
6/25
7/20
 
 
 
 
 
4/5
   Time : 1811
0209
1429
1147
0420
2354
1910
 
 
 
 
 
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
21
24
24
 
 
 
 
 
34
                                   / DIRECTION : 030
060
240
020
030
090
030
 
 
 
 
 
240
  Date : 1/13
2/23
3/25
4/1
5/25
6/3
7/29
 
 
 
 
 
3/25
  Time : 0113
0132
2123
 2302
0200
1325
1315
 
 
 
 
 
2123
  AVERAGE DAILY PEAK GUST :
15.3
21.2
18.8
16.2
 12.4
11.7
10.1
 
 
 
 
 
 
  PEAK WIND DIRECTION : (days)













   NORTH :
4
5
8
5
6
4
4
 
 
 
 
 
36
   NORTHEAST :
10
5
6
 10
13
9
9
 
 
 
 
 
62
   EAST :
2
1
3
1
2
8
4
 
 
 
 
 
21
   SOUTHEAST :
-
-
-
-
-
-
1
 
 
 
 
 
1
   SOUTH :
-
-
1
3
-
1
-
 
 
 
 
 
5
   SOUTHWEST :
11
15
11
 10
7
3
7
 
 
 
 
 
64
   WEST :
4
2
2
1
3
1
4
 
 
 
 
 
17
   NORTHWEST :
-
-
-
-
-
4
2
 
 
 
 
 
6
 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
30.43
30.25
30.14
 
 
 
 
 
30.70
   Date :
1/7
2/24
3/8
4/8
 5/14
 6/21
7/31
 
 
 
 
 
2/24
   Time :
2245
2045
0930
 0845
 1115
 1000
2345
 
 
 
 
 
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
30.06
29.88
29.90
 
 
 
 
 
 
   Departure from Normal  :
0.00 +0.01
-0.01
+0.06
+0.10
-0.03
-0.02
           
   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
29.17
29.50
29.59
 
 
 
 
 
29.17
   Date :
1/26
2/28
3/4
 4/1
5/1
6/14
7/13
 
 
 
 
 
5/1
   Time :
0045
0115
0100
0600
0945
0700
0645
 
 
 
 
 
0945
   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
-
3
9
 
 
 
 
 
19
   Normal :
001246763
2
00 31
  RAIN :
14
8
11
16
7
16
21
 
 
 
 
 
93
   Normal :
7510141615141312
18129146
  DRIZZLE :
5
2
4
 1
-
2
1
 
 
 
 
 
15
   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
-
3
2
 
 
 
 
 
18
  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
-
3
2
 
 
 
 
 
9
   Normal :
012143543
01226
  SMOKE : -
-
-
-
-
13
4
 
 
 
 
 
17
   Normal :
---------
---0
 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, 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 170 212 279 243 226            
   % of Normal :
61%
92%
93%
103% 109% 95% 92%  
 
 
  

   Normal :
72
119
182
205
255
256
246
219
180
129
8148
1992
  MAXIMUM SOLAR RADIATION : (W/m)
644
857
1026
1056
1152
1128
1110
 
 
 
 
 
1152
   Date :
1/31
2/24
3/30
4/23
5/1
6/24
7/22
 
 
 
 
 
5/1
   Time :
1252
1259
1347
1226
1426
1416
1333
 
 
 
 
 
1426
   Normal :
6758601022 1209 1192 1245 1193 1119 1030 896 687 531 1271
  AVERAGE DAILY MAX. SOLAR RADIATION : (W/m)
248535 662 790 916 883 883            
   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
20.02
20.55
20.12
 
 
 
 
 
20.55
   Date :
1/24
2/13+
3/19
4/18
5/17
6/18
7/21
 
 
 
 
 
6/18
   Time :
0218
0030
0134
 0125
0125
0214
0234
 
 
 
 
 
0214
   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
19.50
19.54
19.69
 
 
 
 
 
 
   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