XGY   Grimsby Mountain, ON
Weather Observed At   43-11-00  N    79-33-34  W
2018
Note all stats on this page use calendar days (0000-2359). MSC stats use "climate days".    
  2018 :   
 TEMPERATURE : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  RECORD HIGHEST TEMPERATURE : 17.8
19.7
27.0
30.6
37.2
36.1
41.1
40.6
38.3
30.4
24.4
21.0
41.1
  HIGHEST TEMPERATURE : 14.3
16.9
10.8
19.4
32.2
34.5
34.9
33.2
33.6
29.1
16.6

34.9
  Date : 11th
21st
18th
30th
28th
18th
16th
6th
3rd
9th
6th

7/16
  Time : 1359 0028 1544 1501 1526 1218 1604 1254 1259 1418 1241
1604
   2017 :
12.2
19.7
18.7
24.2 30.1
32.2 31.0
30.2
32.7 27.9 16.7 11.3
32.7
  AVERAGE HIGH TEMPERATURE : -0.6
3.8
3.8
8.2
22.1
24.3
28.9
28.1
23.6
14.5
4.9


  Departure from Normal  :
+1.4
+5.0
-0.4
-2.9
+2.6
+0.4
+2.2
+2.6
+3.2
+1.1
-2.1


  Normal  :
-2.0
-1.2
4.2
11.1
18.5
23.9
26.7
25.5
20.4
13.4
7.0
0.8
12.4
   2017 :
1.7 5.3
4.3 14.0
17.4
24.8
26.5 25.6
23.8
19.2 8.3
-0.8
14.2
  AVERAGE TEMPERATURE : (C)
-4.9
-0.7
0.3
3.8
16.3
19.5
23.6
23.4
19.1
10.3
2.1


  Normal  :
-5.5
-4.9
0.1
6.3
12.8
18.4
21.4
20.5
15.6
9.3
3.7
-2.6
7.9
  AVERAGE LOW TEMPERATURE : -9.1
-5.3
-3.2
-0.7
10.4
14.6
18.3
18.6
14.7
6.0
-0.8


  Normal  :
-9.0
-8.5
-4.0
1.5
7.1
12.8
16.1
15.5
11.1
5.1
0.4
-6.0
3.5
  LOWEST TEMPERATURE : -22.9
-14.7
-7.5
-5.7
4.1
9.6
13.2
12.7
5.9
-0.4
-10.8

-22.9
  Date : 6th
13th
13th
7th
11th
12th
29th
23rd
23rd
18th
22nd

1/6
  Time : 0731 0743 0737 0645 0412 0457 0434 0522 0702 0735 0357
0731
   2017 :
-13.9 -10.6 -11.3 -0.3 0.9 8.4 13.2 11.3 5.7 1.2 -9.0 -22.1 -22.1
  RECORD LOWEST TEMPERATURE : -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
  2018
 RELATIVE HUMIDITY : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  HIGHEST RELATIVE HUMIDITY : 100
97
99
100
98
98
96
96
100
100
100

100
  Date : 22nd+
15th+
29th
3rd+
3rd+
23rd+
22nd
4th+
25th
2nd+
1st+

1/22+
  Time : 0020
1914
1000
2138
2207
1719
1005
0114
0954
1349
1605

0020
  AVERAGE RELATIVE HUMIDITY : (%)
74
76
67
70
66
70
67
75
78
78
78


  Departure from Normal  :
0 +7 -5 +8 -2 -2 -1 +3 +1 +1 -1

  Normal  :
74
69
72
62
68
68
68
72
77
77
79
80
72
   2017 :
80
73
69
72
73
69
73
74
73
73 74 74
73
  LOWEST RELATIVE HUMIDITY : 40
34
28
12
18
25
18
37
42
40
38

12
  Date : 6th
27th
4th+
30th
1st
16th
10th
24th
29th
16th
14th

4/30
  Time : 1336
1452
1358
1508
1725
1635
1431
1531
1427
1426
1124

1508
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
 DEW POINT : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  HIGHEST DEW POINT : 11.6
14.8
7.1
10.8
23.3
26.3
25.0
24.9
25.0
22.3
12.7

26.3
  Date : 12th
20th
28th
12th
31st
30th
2nd
6th+
5th
4th
6th

6/30
  Time : 0410
1549
0234
1256
1340
1334
1238
1329
1305
0944
1055

1334
  AVERAGE DEW POINT : (C) -8.6
-4.3
-5.5
-2.1
9.1
13.1
16.4
18.8
15.2
6.4
-1.3


  Departure from Normal  :
+0.8
+5.3
-1.2
-2.4
+2.1
+0.8
+1.1
+3.5
+3.7
+0.9
-1.7


  Normal : -9.4
-9.6
-4.3
0.3
7.0
12.3
15.3
15.3
11.5
5.5
0.4
-5.6
3.2
   2017 :
-4.0 -3.4 -4.9 3.9 7.7 13.3
16.6 15.8 13.8
9.2 -0.1 -8.0 5.0
  LOWEST DEW POINT : -27.2
-19.5
-16.6
-13.4
-10.3
1.3
3.8
6.1
3.1
-4.4
-16.8

-27.2
  Date : 6th
2nd
19th
30th
12th+
11th
10th
22nd
29th
21st
22nd

1/6
  Time : 0731
1553
1851
1045
1826
1702
1431
1951
1702
1056
1133

0731
  Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
 PRECIPITATION : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  TOTAL PRECIPITATION : (mm)
78.3
92.6
69.9
150.3
70.1
55.6
67.5
89.5
69.4
108.7
125.7


  % of Normal  :
109%
173%
112%
197%
92% 69% 88% 121%
74% 145%
180%


  Normal :
71.9
53.6
62.6
76.4
76.3
80.7
77.1
74.2
93.5
74.9
69.9
73.5
884.6
   2017 :
76.3 60.6 111.6 180.3 177.9 119.8 96.3 68.3 28.2
112.4 88.6 52.7 1173.0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
 RAINFALL : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  RECORD RAINFALL 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 RAINFALL IN 1 DAY : 15.3
11.8
23.0
27.0
17.4
14.4
41.3
19.4
26.6
21.0
43.4

43.4
  Date : 22nd
20th
29th
16th
15th
24th
22nd
18th
3rd
27th
1st

11/1
   2017 :
15.8 19.9 22.4 52.0 43.1 32.0 21.3 17.6
13.9 63.8 19.8 11.4 63.8
  HIGHEST RAIN RATE : (mm/h) 26.6
31.8
19.6
34.0
125.2
88.6
180.0
169.4
198.6
73.8
53.4

198.6
  Date : 12th
20th
31st
4th
15th
18th
26th
8th
3rd
4th
2nd

9/3
  Time : 0955
0218
2054
0001
0337
1407
1757
1548
1406
0617
0128

1406
   2017 :
62.0 20.2 79.0 160.0 125.2 88.6 174.6 205.8 113.0 77.8 42.0 17.6 205.8
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
 SNOWFALL : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  TOTAL SNOWFALL : (cm)
23.4
39.4
35.6
11.0
-




TR
22.4


  % of Normal  :
47%
121%
198%
136%
0%




-
373%


  Normal :
49.6
32.6
18.0
8.1
0.2
0
0
0
0
0.1
6.0
33.4
148.0
   2017 :
7.6 11.2 30.0 3.2 0 -
- - -
0 0.6 59.4 112.0
  RECORD SNOWFALL IN 1 DAY : 50.8
40.6
38.1
27.8
2.5
-
-
-
-
11.4
22.9
61.0
61.0
  MOST SNOWFALL IN 1 DAY : 6.6
15.4
16.4
4.0
-




TR
7.6

16.4
  Date : 29th
7th
1st
15th





17th+
15th

3/1
   2017 :
2.8 4.6 16.0 3.2 0 -
- - -
0 0.6 8.4 16.0
  Highest Snow on Ground : 20
32
26
7
-




TR
10

32
  Date : 8th
11th
2nd
15th+





17th+
28th

2/11
   2017 : 2 4 22 2 0 -
- - -
0 1 19 22
  Average Snow on Ground : 8
11
7
1
-




0
2


   2017 :
TR 1 2 TR
0 -
- - -
0TR 7 1
  Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
 WIND : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  HIGHEST WIND SPEED : (kt)
30
29
30
35
36
18
22
21
24
26
28E

36
  HIGHEST WIND DIRECTION : 020
200
360
360
210
050
360
200
080
200
230

210
  Date : 13th+
25th
1st
14th
4th
10th+
22nd
29th
9th
19th
6th

5/4
  Time : 0100
1150
1959
2023
1458
1422
0719
1002
1828
2237
M

1458
   2017 :
32 27 33 37 28 23 24 22 30 30 31 28 37
  AVERAGE DAILY PK GUST : (kt)
20.0
17.6
18.3
17.6
15.2
12.3
11.3
10.3
13.6
15.7
14.2


   2017 :
16.4
17.1
19.3
19.0
15.9
14.2
11.7
11.3
11.2
16.1
17.0
15.9
15.4
  PREVAILING WIND DIRECTION :
SSW
SSW
N
N
SSW
N
SSW
SSW
N
SSW
SW


   2017 :
SW
SW
N
N
N
SSW
SW
SW
SW
SW
SSW
SW
SW
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
 PRESSURE : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  HIGHEST PRESSURE :
30.66
30.79
30.60
30.46
30.38
30.26
30.42
30.24
30.39
30.50
30.64

30.79
  Date :
14th
13th
26th
21st
18th
26th
7th
31st
24th
18th
22nd

2/13
  Time :
1045
0815
1000
0845
1130
0330
1000
0030
0815
1200
1030

0815
   2017 :
30.79 30.39 30.74 30.50 30.37 30.15 30.26 30.36 30.56 30.49 30.65 30.61 30.79
  AVERAGE PRESSURE : (in.)
30.09
30.09
30.01
29.96
30.00
29.94
30.04
29.99
30.14
30.03
30.05


  Departure from Normal  :
+0.09 +0.05 +0.02 -0.02 +0.04 -0.02 +0.06 -0.03 +0.10 -0.02 +0.03

  Normal :
30.00
30.04
29.99
29.98
29.96
29.96
29.98
30.02
30.04
30.05
30.02
30.03
30.01
   2017 :
29.95 29.90 30.11 29.95 29.86 29.90 29.98 30.03 30.07
30.04 30.04 30.02 29.99
  LOWEST PRESSURE :
29.40
29.49
29.57
29.20
29.55
29.64
29.71
29.63
29.66
29.59
29.37

29.20
  Date :
23rd
25th
15th
4th
4th
13th
22nd
21st
21st
11th
26th

4/4
  Time :
0915
0845
0945
0445
1645
1515
1045
2015
1715
0600
1345

0445
   2017 :
29.37 29.22 29.21 29.25 29.39 29.52 29.70 29.66 29.52 29.41 29.10 29.53 29.10
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 DAYS WITH : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  THUNDERSTORM :
-
-
-
1
1
4
5
5
2
1
-

19
   2017 :
- 2 1 4 6 7 9 8 1
1
1 - 40
  FUNNEL CLOUD/WATERSPOUT :
-
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  RAIN :
7
7
6
16
13
13
14
13
13
19
12

133
   2017 :
13 8 9 15 22 21 14 14 9
16 17 3 151
  DRIZZLE :
6
2
3
3
-
1
-
-
2
5
4

26
   2017 :
7 1 5 - 4 - 2 - -
34 1 27
  HAIL :
-
-
-
-
-
-
1
-
-
-
-

1
   2017 :
- - - - - 1 1 - -
- - - 2
  FREEZING RAIN : -
1
-
2
-
 



-
1

4
   2017 :
1 2 - - - - - - -
- - 2 5
  FREEZING DRIZZLE : -
1
-
-
-
 



-
1

2
   2017 :
- - - - - - - - -
- - 2 2
  ICE PELLETS :
2
-
-
2
-
 



-
1

5
   2017 :
2 1 2
- -
- - - -
- - 1 6
  SNOW : 17
12
13
13
-




1
13

69
   2017 :
21 14 14 2 - - - - -
- 6 20 77
  SNOW PELLETS :  -
-
1
1
-




1
1

4
   2017 :
- 2 - - - -
- - -
- - 1 3
  SNOW GRAINS : 2
2
1
-
-




-
-

5
   2017 :
- - - - - -
- - -
- - - 0
  ICE CRYSTALS : -
1
-
-
-




-
-

1
   2017 :
- - - - - - - - -
- - - 0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 DAYS WITH : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  FOG : 2
5
1
8
5
2
-
-
-
3
4

30
   2017 :
7 5 2 6 7 3 1 - 1
3 1 - 36
  FREEZING FOG : -
-
-
-
-
 



-
-

0
   2017 :
- - - - - - - - -
- - 2 2
  ICE FOG : -
-
-
-
-
 
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  BLOWING SNOW : -
-
-
-
-




-
-

0
   2017 :
- - - - - - - - -
- - - 0
  HAZE : -
-
-
1
4
1
2
6
3
-
-

17
   2017 :
- 2 1 - 2 1 2 2 6
- 2 2 20
  SMOKE : -
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  DUST : -
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  BLOWING DUST : -
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  BLOWING SAND : -
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 DAYS WITH : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  AURORA : -
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  EARTHQUAKE : -
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 BRIGHT SUNSHINE : Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  BRIGHT SUNSHINE TIME : (h)
98 107 195 199 285 251 257 227 173 112 57
 
   2017 :
52
112
171
188
227
254
238
219
201
138
70
59
1929
  HIGHEST SOLAR RADIATION : (W/m)
635
781
871
1140
1103
1253
1174
1221
1033
887
672

1253
  Date :
20th
28th
16th
5th
10th
4th
24th
21st
6th
17th
7th

6/4
  Time :
1145
1248
1218
1226
1325
1351
1223
1337
1252
1220
1146

1351
   2017 :
716 867 1012 1128 1156 1204 1170 1066 1094 801 704 484 1204
  AVERAGE DAILY MAX SOLAR RADIATION : (W/m)
410
467
665
782
924
933
938
913
758
561
350


   2017 :
307 526 656 770 810 977 925 912 777 589 393 296 662
  DARKEST SKY : (m/as)
20.22
20.30
20.02
20.09
20.36
20.19
20.24
20.45
20.44
20.90
20.28

20.90
  Date :
28th
24th
18th+
8th
23rd
20th
17th
17th
11th
21st
10th

10/21
  Time :
0458
0444
0415
0258
0307
0211
0335
0259
0024
0211
0131

0211
   2017 :
20.47
20.58
20.61
20.54
20.77
20.67
20.51
20.79
20.53
20.64
20.28
20.14
20.79
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2018
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.