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









16.9
  Date : 11th
21st
18th









2/21
  Time : 1359 0028 1544








0028
   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










  Departure from Normal  :
+1.4
+5.0
-0.4










  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










  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










  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









-22.9
  Date : 6th
13th
13th









1/6
  Time : 0731 0743 0737








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
  Date : 22nd+
15th+
29th









1/22+
  Time : 0020
1914
1000









0020
  AVERAGE RELATIVE HUMIDITY : (%)
74
76
67










  Departure from Normal  :
0 +7 -5









  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









28
  Date : 6th
27th
4th+









3/4+
  Time : 1336
1452
1358









1358
 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









14.8
  Date : 12th
20th
28th









2/20
  Time : 0410
1549
0234









1549
  AVERAGE DEW POINT : (°C) -8.6
-4.3
-5.5










  Departure from Normal  :
+0.8
+5.3
-1.2










  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









-27.2
  Date : 6th
2nd
19th









1/6
  Time : 0731
1553
1851









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










  % of Normal  :
109%
173%
112%










  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









23.0
  Date : 22nd
20th
29th









3/29
   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









31.8
  Date : 12th
20th
31st









2/20
  Time : 0955
0218
2054









0218
   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










  % of Normal  :
47%
121%
198%










  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









16.4
  Date : 29th
7th
1st









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









32
  Date : 8th
11th
2nd









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










   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









30
  HIGHEST WIND DIRECTION : 020
200
360









020
  Date : 13th+
25th
1st









1/13+
  Time : 0100
1150
1959









0100
   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










   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










   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
30.57









30.79
  Date :
14th
13th
26th









2/13
  Time :
1045
0815
1000









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
29.98










  Departure from Normal  :
+0.09 +0.05 -0.01









  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
29.54









29.40
  Date :
23rd
25th
15th









1/23
  Time :
0915
0845
0945









0915
   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 :
-
-
-









0
   2017 :
- 2 1 4 6 7 9 8 1
1
1 - 40
  FUNNEL CLOUD/WATERSPOUT :
-
-
-
-
-
-
-
-
-
-
-
-
0
   2017 :
- - - - - - - - -
- - - 0
  RAIN :
7
7
6









20
   2017 :
13 8 9 15 22 21 14 14 9
16 17 3 151
  DRIZZLE :
6
2
3









11
   2017 :
7 1 5 - 4 - 2 - -
34 1 27
  HAIL :
-
-
-









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









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









1
   2017 :
- - - - - - - - -
- - 2 2
  ICE PELLETS :
2
-
-









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









42
   2017 :
21 14 14 2 - - - - -
- 6 20 77
  SNOW PELLETS :  -
-
1









1
   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
   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 : -
-
-









0
   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








 
   2017 :
52
112
171
188
227
254
238
219
201
138
70
59
1929
  HIGHEST SOLAR RADIATION : (W/m²)
635
781
871









871
  Date :
20th
28th
16th









3/16
  Time :
1145
1248
1218









1218
   2017 :
716 867 1012 1128 1156 1204 1170 1066 1094 801 704 484 1204
  AVERAGE DAILY MAX SOLAR RADIATION : (W/m²)
410
467
665










   2017 :
307 526 656 770 810 977 925 912 777 589 393 296 662
  DARKEST SKY : (m/as²)
20.22
20.30
20.02









20.30
  Date :
28th
24th
18th+









2/24
  Time :
0458
0444
0415









0444
   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.