XGY   Grimsby Mountain, ON
Weather Observed At   43-11-00  N    79-33-34  W
2017
Note all stats on this page use calendar days (0000-2359). MSC stats use "climate days".    
  2017 :   
 TEMPERATURE : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD HIGHEST TEMPERATURE : 17.8
18.0
 27.0
 30.6
 37.2
 36.1
 41.1
 40.6
 38.3
 30.4
 24.4
 21.0
 41.1
  HIGHEST TEMPERATURE : 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
  Date : 12th
 23rd
 24th
 16th
 18th
 12th
 31st
 21st
 26th
 4th
 5th
 5th
 9/26
  Time : 0231 1412 1642 1437 1511 1341 1427 1323 1500 1251 1348 1129 1500
   2016 :
11.9
14.8
21.4
25.4 34.2
33.6 35.8
34.1
34.8 25.4 21.1 12.2
35.8
  AVERAGE HIGH TEMPERATURE : 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
  Departure from Normal  :
+3.7
 +6.5
 +0.1
 +2.9
 -1.1
 +0.9
 -0.2
 +0.1
 +3.4
 +5.8
 +1.3
 -1.6
 +1.8
  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
   2016 :
1.2 3.3
8.2 9.5
20.9
25.9
29.3 29.7
24.5
17.1 12.1
1.8
15.3
  AVERAGE TEMPERATURE : (°C)
 -1.1
 1.0
 0.4
 9.2
 12.8
 19.6
 21.8
 20.5
 18.5
 14.2
 4.1
 -4.1
 9.7
  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 : -3.9
 -3.4
 -3.6
 4.4
 8.3
 14.4
 17.0
 15.5
 13.3
 9.1
 -0.2
 -7.5
 5.3
  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 : -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
  Date : 7th
3rd
 5th
 7th
 9th
 2nd
 26th
 24th
 30th
 26th
 10th+
 28th
 12/28
  Time : 0717 0603 0406 0848 0451 0444 0507 0512 2320 0808 2242 0752 0752
   2016 :
-15.6 -20.4 -9.5
-7.0 1.8 7.3
10.8 13.9 9.1
-1.2 -5.2 -13.8 -20.4
  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
  2017
 RELATIVE HUMIDITY : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST RELATIVE HUMIDITY : 100
 100
 98
 99
 100
 98
 98
 98
 98
 100
 100
 98
 100
  Date : 3rd+
24th
 27th+
 6th+
 5th+
 4th+
 13th+
 18th
 21st+
 10th
 18th
 22nd+
 1/3+
  Time : 1842
2231
 0100
 0947
 1708
 2330
 1700
 0600
 0716
 0300
 1920
 2105
 1842
  AVERAGE RELATIVE HUMIDITY : (%)
80
73
 69
 72
 73
 69
 73
 74
 73
 73
 74
 74
 73
  Departure from Normal  :
+6 +4 -3 +10 +5 +1 +5 +2 -4 -4 -5 -5 +1
  Normal  :
74
69
 72
 62
 68
 68
 68
 72
 77
 77
 79
 80
 72
   2016 :
75
72
73
67
62
60
64
68
70
74 75 78
70
  LOWEST RELATIVE HUMIDITY : 38
 42
 19
 20
 27
 23
 32
 36
 31
 30
 37
 35
 19
  Date : 8th
19th
 21st+
 8th
 8th
 2nd
 30th
 10th
 2nd
 3rd+
 28th
 6th
 3/21+
  Time : 1343
1437
 1432
 1434
 1430
 1931
 1524
 1526
 1144
 1421
 1233
 1206
 1432
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 DEW POINT : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST DEW POINT : 11.1
 12.9
 13.4
 17.3
 19.4
 21.9
 23.6
 23.6
 23.3
 20.3
 15.0
 8.9
 23.6
  Date : 12th
23rd
 27th
 19th
 29th
 23rd
 12th
 22nd
 26th
 4th
 5th
 5th
 7/12+
  Time : 0538
1201
 1259
 1807
 1301
 1601
 1205
 1246
 1140
 1422
 1610
 0906
 1205
  AVERAGE DEW POINT : (°C) -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
  Departure from Normal  :
+5.4
 +6.2
 -0.6
 +3.6
 +0.7
 +1.0
 +1.3
 +0.5
 +2.3
 +3.7
 -0.5
 -2.4
 +1.8
  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
   2016 :
-6.1 -5.7 -0.5 -0.9 7.0 10.3
15.3 17.6 13.8
8.3 3.3 -4.3 4.8
  LOWEST DEW POINT : -20.1
 -15.2
 -18.7
 -9.9
 -9.8
 -2.9
 6.7
 4.5
 1.9
 -2.9
 -15.7
 -25.2
 -25.2
  Date : 8th
9th
 22nd
 8th
 8th
 2nd
 4th
 31st
 2nd
 31st
 10th
 28th
 12/28
  Time : 1359
0840
 1149
 1434
 2126
 1943
 2313
 2320
 0635
 1431
 0733
 0752
 0752
  Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  2017
 PRECIPITATION : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  TOTAL PRECIPITATION : (mm)
 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
  % of Normal  :
106%
 113%
 178%
 236%
 233%
 148%
 125%
 92%
 30%
 150%
 127%
 72%
 133%
  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
   2016 :
42.8 89.9 141.5 67.7 21.8 32.0 37.7 73.0 54.0
70.2 64.1 70.8 765.5
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 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
 35.6
 68.6
 78.0
 72.6
 90.2
 77.0
 115.3
 60.2
 57.4
 115.3
  MOST RAINFALL IN 1 DAY : 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
  Date : 12th
7th
 1st+
 20th
 25th
 23rd
 7th
 12th
 4th
 9th
 18th
 5th
 10/9
   2016 :
14.9 35.2 33.3 12.8 6.8 12.1 17.0 18.4
16.4 16.2 19.0 15.0 35.2
  HIGHEST RAIN RATE : (mm/h) 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
  Date : 12th
7th
 1st
 30th
 1st
 15th
 16th
 12th
 4th
 9th
 5th
 5th
 8/12
  Time : 0347
1505
 0223
 2216
 1431
 0935
 1905
 0008
 2040
 0339
 2215
 0327
 0008
   2016 :
12.8 30.6 137.2 93.0 7.4 91.4 87.2 106.6 79.0 60.6 43.6 54.4 137.2
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 SNOWFALL : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  TOTAL SNOWFALL : (cm)
 7.6
 11.2
 30.0
 3.2
 0



0
 0.6
 59.4
 112.0
  % of Normal  :
15%
 34%
 167%
 40%
 0%



0%
 10%
 178%
 76%
  Normal :
49.6
32.6
18.0
8.1
0.2
0
0
0
0
0.1
6.0
33.4
148.0
   2016 :
29.2 22.2 10.8 41.8 TR -
- - -
0.6 0.8 32.2 137.6
  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 : 2.8
 4.6
 16.0
 3.2
 0



0
 0.6
 8.4
 16.0
  Date : 31st
 12th
 14th
 7th





10th
 15th
 3/14
   2016 :
13.4 10.4 6.0 9.2 TR -
- - -
0.6 0.8 12.6 13.4
  Highest Snow on Ground : 2
 4
 22
 2
 0



0
 1
 19
 22
  Date : 1st+
 13th+
 14th
 7th





10th
 15th
 3/14
   2016 : 13 16 9 12 TR -
- - -
TR TR 18 18
  Average Snow on Ground : TR
1
 2
 TR
 0



0
 TR
 7
 1
   2016 :
3 3 1 1
0 -
- - -
00 6 1
  Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  2017
 WIND : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST WIND SPEED : (kt)
 32
 27
 33
 37
 28
 23
 24
 22
 30
 30
 31
 28
 37
  HIGHEST WIND DIRECTION : 200
230
 230
 230
 180
 210
 360
 360
 020
 080
 200
 200
 230
  Date : 11th
7th
 8th
 10th
 18th
 18th
 20th
 31st
 29th
 11th
 21st
 5th
 4/10
  Time : 0027
2229
 1402
 1443
 1726
 1508
 1208
 1814
 2238
 1546
 1319
 1158
 1443
   2016 :
28 35 29 32 23 17 17 23 23 27 30 26 35
  AVERAGE DAILY PK GUST : (kt)
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
   2016 :
18.2
18.9
 18.2
 17.0
 13.5
 12.7
 12.5
 11.4
 13.5
 14.5
15.7
16.5
 15.2
  PREVAILING WIND DIRECTION :
SW
SW
 N
 N
 N
 SSW
 SW
 SW
 SW
 SW
 SSW
 SW
 SW
   2016 :
SW
SW
SW
NNE
SW
NNE
SW
SW
SW
SW
SSW
SW
SW
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
 PRESSURE : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST PRESSURE :
 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
  Date :
13th
20th
 4th
 13th
 20th
 7th
 25th
 26th
 10th
 3rd
 11th
 27th+
 1/13
  Time :
1945
1030
 1145
 0945
 1200
 1130
 2215
 1015
 1000
 0845
 0815
 2230
 1945
   2016 :
30.69 30.63 30.40 30.52 30.27 30.24 30.25 30.24 30.32 30.50 30.44 30.75 30.75
  AVERAGE PRESSURE : (in.)
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
  Departure from Normal  :
-0.05 -0.14 +0.12 -0.03 -0.10 -0.06 0.00 +0.01 +0.03 -0.01 +0.02 -0.01 -0.02
  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
   2016 :
29.96 29.96 29.98 30.04 29.95 29.90 29.91 29.97 30.05
30.08 30.03 30.04 29.99
  LOWEST PRESSURE :
 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
  Date :
26th
7th
 1st
 6th
 6th
 23rd
 8th
 22nd
 4th
 30th
 18th
 12th
 11/18
  Time :
0445
2200
 1800
 1700
 1200
 1345
 0115
 1730
 2015
 0430
 2245
 0630
 2245
   2016 :
29.09 29.18 29.34 29.24 29.46 29.43 29.64 29.54 29.66 29.53 29.42 29.46 29.09
 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 :
-
2
 1
4
6
7
9
8
1
1
 1
-
40
   2016 :
- - 3 1 1 3 3 5 3
1
 - - 20
  FUNNEL CLOUD/WATERSPOUT :
-
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
- - - - - - - - -
- - - 0
  RAIN :
 13
 8
 9
 15
 22
 21
 14
 14
 9
 16
 17
 3
151
   2016 :
9 11 17 10 10 16 11 15 12
16 14 8 149
  DRIZZLE :
 7
 1
 5
 -
 4
 -
 2
 -
 -
 3
 4
 1
27
   2016 :
2 2 3 - 2 - - - 1
- 2 2 14
  HAIL :
 -
 -
 -
 -
 -
 1
 1
 -
 -
 -
 -
 -
2
   2016 :
- - - - - - - - -
- - - 0
  FREEZING RAIN : 1
 2
 -
 -
 -
 -
 -
 -
 -
 -
 -
 2
5
   2016 :
- - 2 1 - - - - -
- 1 3 7
  FREEZING DRIZZLE : -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 2
2
   2016 :
- 2 - - - - - - -
- 2 1 5
  ICE PELLETS :
 2
 1
 2
 -
 -
 -
 -
 -
 -
 -
 -
 1
6
   2016 :
- 2 3
1 1
- - - -
1 - - 8
  SNOW : 21
 14
 14
 2
 -
 -
 -
 -
 -
 -
 6
 20
77
   2016 :
21 16 7 6 1 - - - -
1 2 20 74
  SNOW PELLETS :  -
 2
 -
 -
 -
 -
 -
 -
 -
 -
 -
 1
3
   2016 :
- 2 - 1 1 -
- - -
- - 1 5
  SNOW GRAINS : -
-
-
-
-
-
-
-
-
-
 -
-
0
   2016 :
- 1 - - - -
- - -
- - 3 4
  ICE CRYSTALS : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
1 - - - - - - - -
- - 1 2
 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 : 7
5
2
6
7
3
1
-
1
3
 1
-
36
   2016 :
1 3 6 - 2 - 1 - -
- 2 - 15
  FREEZING FOG : -
-
-
-
-
-
-
-
-
-
 -
2
2
   2016 :
- 1 - - - - - - -
- - - 1
  ICE FOG : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
- - - - - - - - -
- - - 0
  BLOWING SNOW : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
1 - - 1 - - - - -
- - - 2
  HAZE : -
2
1
-
2
1
2
2
6
-
 2
2
20
   2016 :
1 - - 2 4 - 4 - 1
- 1 - 13
  SMOKE : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
- - - - - - - - -
- - - 0
  DUST : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
- - - - - - - - -
- - - 0
  BLOWING DUST : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
- - - - - - - - -
- - - 0
  BLOWING SAND : -
-
-
-
-
-
-
-
-
-
-
-
0
   2016 :
- - - - - - - - -
- - - 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
   2016 :
- - - - - - - - -
- - - 0
  EARTHQUAKE : -
-
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 0
   2016 :
- - - - - - - - -
- - - 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)
52 112
 171
 188
 227
 254
 238
 219
 201
 138
 70
 59
 1929
   2016 :













  HIGHEST SOLAR RADIATION : (W/m²)
 716
 867
 1012
 1128
 1156
 1204
 1170
 1066
 1094
 801
 704
 484
 1204
  Date :
29th
25th
 11th
 4th
 7th
 25th
 27th
 18th
 7th
 25th
 6th
 7th
 6/25
  Time :
1330
1319
 1246
 1304
 1352
 1409
 1302
 1345
 1251
 1153
 1130
 1109
 1409
   2016 :
677 843 959 1385 1219 1283 1184 1093 933 913 681 581 1385
  AVERAGE DAILY MAX SOLAR RADIATION : (W/m²)
307
526
 656
 770
 810
 977
 925
 912
 777
 589
 393
 296
 662
   2016 :
350 538 583 809 963 1016 992 919 734 596 438 293 686
  DARKEST SKY : (m/as²)
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
  Date :
27th
23rd
 2nd
 28th
 22nd
 20th
 12th
 18th
 27th+
 13th
 16th
 20th
 8/18
  Time :
0401
0312
 0211
 0232
 0225
 0049
 2308
 0258
 0020
 0038
 0117
 0155
 0258
   2016 :













 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2017
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.