XGY   Grimsby Mountain, ON
Weather Observed At   43-11  N    79-34  W
2021
Note all stats on this page use calendar days (0000-2359). MSC stats use "climate days" (normally 0800-0759).    
  2021 :   
 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
 32.0
 24.6
 21.0
 41.1
  HIGHEST TEMPERATURE : 5.6
10.6
 21.4
 22.8
 32.3
 34.1
 33.0
 33.6
 28.8
 26.1
 18.3
 17.7
 34.1
  Date : 15th
 24th
 25th
 9th
 25th
 29th
 6th
 24th
 7th
 11th
 8th
 11th
 6/29
  Time : 1319 1218 1433 1510 1421 1619 1559 1407 1507 1449 1241 1156 1619
   2020 :
14.4
10.8
21.2
18.432.3
32.636.1
34.6
30.225.824.611.2
36.1
  AVERAGE HIGH TEMPERATURE : 0.9
0.4
 9.9
 12.2
 19.6
 26.8
 26.0
 28.8
 23.4
 17.6
 9.3
 5.2
 15.0
  Departure from Normal  :
+3.9
 +1.6
 +5.7
 +1.1
 +1.1
 +2.9
 -0.7
 		+3.3
 +3.0
 +4.2
 +2.3
 +4.4
 +2.6
  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
   2020 :
2.62.1
7.211.1
17.5
26.3
30.528.3
22.6
15.011.8
3.5
14.9
  AVERAGE TEMPERATURE : (°C)
 -1.7
 -4.2
 4.0
 7.5
 13.4
 21.3
 21.4
 23.7
 18.4
 14.3
 4.9
 1.8
  10.4
  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 : -4.4
 -8.8
 -1.9
 2.7
 7.2
 15.7
 16.7
 18.6
 13.3
 11.0
 0.5
 -1.6
 5.8
  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 : -14.5
 -15.8
 -9.9
 -4.4
 1.6
 7.6
 10.1
 11.2
 8.0
 2.5
 -5.1
 -8.7
 -15.8
  Date : 29th
17th
 2nd
 3rd
 6th+
 17th
 31st
 2nd
 29th 24th 29th 20th 2/17
  Time : 0630 0126 0312 0603 0547 0534 0545 0606 0716 0731 0815 0022 0126
   2020 :
-12.0 -15.7-8.7 -4.1 -2.28.415.311.6 5.6-4.3-4.2 -6.2-15.7
  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
  2021
 RELATIVE HUMIDITY : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST RELATIVE HUMIDITY : 100
 95
 96
 100
 99
 98
 97
 97
 98
 100
 98
 97
 100
  Date : 1st
5th+
 26th
 11th+
 4th
 9th+
 3rd+
 29th
 22nd
 3rd+
 10th
 29th
 1/1
  Time : 2155
0025
 0703
 2340
 1300
 0300
 0600
 0500
 0929
 1932
 0300
 0850
 2155
  AVERAGE RELATIVE HUMIDITY : (%)
78
72
 60
 69
 63
 70
 75
 73
 73
 83
 74
 78
  72
  Departure from Normal  :
+4 +3 -12 +7 -5 +2 +7 +1 -4 +6 -5 -2  0
  Normal  :
74
69
 72
 62
 68
 68
 68
 72
 77
 77
 79
 80
 72
   2020 :
78
74
74
65
67
66
66
68
69
74 71 79
71
  LOWEST RELATIVE HUMIDITY : 28
 33
 14
 15
 16
 23
 34
 29
 31
 39
 34
 39
 14
  Date : 9th
3rd
 22nd
 26th
 14th
 15th
 22nd
 2nd
 2nd
 19th
 5th
 16th
 3/22
  Time : 1509
1340
 1514
 1510
 1338
 1526
 1241
 1459
 1431
 1344
 1255
 0447
 1514
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 DEW POINT : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST DEW POINT : 2.4
 5.5
 11.7
 14.1
 21.0
 25.5
 24.5
 25.3
 22.7
 19.9
 13.2
 14.0
 25.5
  Date : 15th
28th
 24th
 9th
 25th
 28th
 13th
 11th
 14th
 9th
 8th+
 11th
 6/28
  Time : 1253
2359
 1335
 1331
 1139
 1518
 1229
 1107
 1306
 1505
 1014
 1153
 1518
  AVERAGE DEW POINT : (°C) -5.1
-8.7
 -3.8
 1.9
 5.6
 15.0
 16.7
 18.1
 13.5
 11.7
 0.7
 -1.4
 7.4
  Departure from Normal  :
+4.3
 +0.9
 +0.5
 +1.6
 -1.4
 		+2.7
 +1.4
 +2.8
 +2.0
 +6.2
 +0.3
 +4.2
 +4.2
  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
   2020 :
-3.7 -6.2-1.0 -0.85.413.3
17.4 15.6 11.0
6.12.4-2.74.7
  LOWEST DEW POINT : -17.3
 -20.5
 -25.0
 -17.9
 -6.9
 0.8
 7.3
 5.2
 4.6
 0.5
 -9.3
 -10.8
 -25.0
  Date : 28th
7th+
 15th
 2nd
 12th
 15th
 21st
 2nd
 28th
 18th
 23rd
 7th
 3/15
  Time : 1346
2215
 1615
 0944
 1741
 1526
 1759
 1459
 2008
 1845
 1310
 2312
 1615
  Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  2021
 PRECIPITATION : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD MONTHLY PRECIPITATION : 147.7
131.1
146.0
180.1
193.8
189.6
184.6
202.7
210.2
228.0
239.4
133.6
1164.6
  TOTAL PRECIPITATION : (mm)
 41.1
 63.5
 42.2
 57.0
 32.8
 90.0
 82.6
 40.4
 224.3
 231.9
 40.8
 70.9
  1017.5
  % of Normal  :
57% 118% 67% 75% 43% 112% 107% 54% 240% 310% 58% 96%  115%
  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
   2020 :
112.667.288.474.365.635.628.240.738.9
100.975.990.7819.0
  RECORD LOW MONTHLY PRECIPITATION : 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
  EVAPOTRANSPIRATION : (mm) -17.6
-27.7
 -73.0
 -72.9
 -112.6
 -124.1
 -96.0
 -98.0
 -76.8
 -32.2
 -22.2
 -12.0
 765.1
  NET MOISTURE : (mm) +23.5
 		+35.8
 		-30.8
 		-15.9
 		-79.8
 		-34.1
 		-13.4
 		-57.6
 		+146.8
 		+199.7
 		+18.6
 		+58.9
 		 +251.7
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 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 : 12.2
 5.9
 27.4
 15.2
 20.6
 17.4
 18.6
 12.0
 79.7
 47.2
 7.1
 18.9
 79.7
  Date : 2nd
27th
 26th
 11th
 28th
 3rd
 17th
 1st
 22nd
 25th
 25th
 5th
 9/22
   2020 :
38.81.713.220.215.615.615.612.5
13.818.024.012.038.8
  HEAVIEST RAIN RATE : (mm/h) 144.0
 21.8
 108.6
 23.0
 50.6
 180.0
 83.4
 174.6
 198.6
 174.6
 5.4
 15.8
 198.6
  Date : 2nd
27th
 26th
 11th
 26th
 8th
 8th+
 1st
 15th
 15th
 18th
 11th
 9/15
  Time : 0011
0718
 0649
 0746
 1925
 1706
 1228
 2002
 0012
 2030
 0050
 0431
 0012
   2020 :
50.02.039.440.681.244.4213.4102.866.258.228.615.4213.4
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 SNOWFALL : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  RECORD MONTHLY SNOWFALL : 98.6
110.4
74.8
40.0
2.5
0
0
0
0
18.0
42.0
107.3
246.4
  TOTAL SNOWFALL : (cm)
 20.8
 60.2
 0.2
 16.2
 -



-
 9.2
 16.6
 123.2 
  % of Normal  :
42%
 185%
 		1%
 200%
 		0%



0%
 153%
 		50%
   83%
  Normal :
49.6
32.6
18.0
8.1
0.2
0
0
0
0
0.1
6.0
33.4
148.0
   2020 :
24.053.014.02.2TR-
- - -
TR8.838.0140.0
  RECORD LOW MONTHLY SNOWFALL : 3.0
0.4
0
0
0
0
0
0
0
0
0
3.8
54.7
  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 : 9.6
 14.6
 0.2
 12.8
 -



-
 6.8
 4.0
 14.6
  Date : 26th
 		16th
 		1st
 		21st
 		-



-
 28th
 		18th+
 		2/16
   2020 :
9.012.011.0 1.4TR-
- - -
TR5.616.616.6
  Highest Snow on Ground : 10
 33
 13
 15
 -



-
 4
 5
 33
  Date : 26th
 		22nd
 		1st+
 		21st
 		-



-
 28th+
 		24th 2/22
   2020 : 916151TR-
- - -
TR41616
  Average Snow on Ground : 2
20
 3
 1
 -



-
 0
 1
 2.3
   2020 :
271TR
0-
- - -
0TR41.2
  Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  2021
 WIND : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST WIND SPEED : (kt)
 24
 32
 30
 24
 27
 21
 23
 21
 23
 23E
 22E
 38E
 38E
  HIGHEST WIND DIRECTION : 220
010
 210
 360
 360
 260
 040
 200
 020
 060
 210
 230
 230
  Date : 13th+
15th
 11th+
 1st+
 28th
 21st
 17th+
 11th
 1st
 25th
 21st+
 11th
 12/11
  Time : 1435
2330
 1705
 1841
 0651
 1658
 1342
 0652
 1018
 1300
 1400
 1600
 1600
   2020 :
272630 27262216222224302530
  AVERAGE DAILY PK GUST : (kt)
14.1
18.2
 19.9
 15.7
 14.3
 12.7
 12.4
 11.8
 13.9
 11.2
 12.3
 14.7
 14.3
   2020 :
16.8
 		17.9
 		17.7
 		16.9
 		15.4
 		11.9
 		10.4
 		12.3
 		13.9
 		15.8
 		18.4
 		16.8
 		15.4
  PEAK WIND DIRECTION : (days)











   NORTH :
10
 8
 10
 10
 15
 9
 19
 17
 12
 4
 2
 1
 117
   NORTHEAST :
5
 3
 2
 -
 2
 1
 2
 3
 3
 6
 1
 5
 33
   EAST :
2
 -
 -
 -
 2
 1
 1
 -
 1
 3
 1
 2
 13
   SOUTHEAST :
-
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 0
   SOUTH :
4
 5
 8
 10
 2
 2
 1
 2
 7
 6
 3
 2
 52
   SOUTHWEST :
6
 8
 5
 3
 8
 12
 5
 8
 3
 5
 13
 8
 84
   WEST :
3
 4
 5
 5
 1
 2
 3
 1
 3
 4
 8
 9
 48
   NORTHWEST :
1
 -
 1
 2
 1
 3
 -
 -
 1
 3
 2
 4
 18
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 PRESSURE : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  HIGHEST PRESSURE :
 30.48
 30.55
 30.57
 30.42
 30.40
 30.24
 30.22
 30.30
 30.28
 30.39
 30.48
 30.57
 30.57
  Date :
1st
21st
 20th
 2nd 21st 1st 23rd+
 15th
 19th+
 6th
 19th
 14th
 3/20+
  Time :
0345
0930
 0915
 1045
 1130
 0815
 1000
 1015
 1045
 1015
 2100
 1000
 0915
   2020 :
30.88 30.58 30.68 30.22 30.37 30.50 30.1830.19 30.61 30.48 30.58 30.57 30.88
  AVERAGE PRESSURE : (in.)
30.04
30.11
 30.11
 29.93
 30.11
 29.96
 29.98
 30.01
 29.97
 29.96
 30.04
 29.94
 30.01
  Departure from Normal  :
+0.04 +0.07 +0.12 -0.05 +0.15 0.00 0.00 -0.01 -0.07 -0.09 +0.02 -0.09 0.00
  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
   2020 :
30.0629.9830.05 29.86 30.0129.98 29.9429.95 30.06
30.0530.06 29.9929.99
  LOWEST PRESSURE :
 29.48
 29.33
 29.32
 29.45
 29.61
 29.45
 29.71
 29.79
 29.60
 29.56
 29.63
 29.11
 29.11
  Date :
16th
5th
 26th
 11th
 2nd
 21st
 29th
 12th+
 8th
 30th+
 14th
 11th
 12/11
  Time :
1345
0445
 1000
 0930
 0445
 0945
 1445
 0330
 0330
 1430
 2330
 1400
 1400
   2020 :
29.47 29.29 29.35 29.19 29.6529.53 29.61 29.44 29.52 29.59 29.27 29.4929.19
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 DAYS WITH : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  THUNDERSTORM :
-
-
 1
-
-
 6
 11
 9
 8
2
 -
 -
37
   2020 :
- -1-26532
1
 -- 20
  FUNNEL CLOUD/WATERSPOUT :
-
-
-
-
-
-
-
-
-
-
-
-
0
   2020 :
- - - - - - - - -
1- - 1
  RAIN :
 5
 5
 8
 17
 14
 14
 20
 15
 18
 19
 18
 13
 166
   2020 :
11415161491113 9
227 11142
  DRIZZLE :
 3
 -
 1
 1
 1
 1
 -
 -
 -
 7
 2
 4
20
   2020 :
335-2--- 3
44327
  HAIL :
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
0
   2020 :
- - - - - --- -
- - - 0
  FREEZING RAIN : 1
 -
 1
 -
 -
 -
 -
 -
 -
 -
 -
 2
4
   2020 :
-2--- - - - -
- --2
  FREEZING DRIZZLE : 4
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 2
6
   2020 :
-2- - - - - - -
- --2
  ICE PELLETS :
 2
 -
 1
 1
 -
 -
 -
 -
 -
 -
 2
 2
8
   2020 :
12-
11
- - - -
- -16
  SNOW : 18
 18
 5
 4
 -
 -
 -
 -
 -
 -
 9
 14
66
   2020 :
1622383- - - -
181475
  SNOW PELLETS :  1
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
1
   2020 :
-1--- -
- - -
1216
  SNOW GRAINS : 1
-
 1
-
-
-
-
-
-
-
 1
1
4
   2020 :
-1-- - -
- - -
1--2
  ICE CRYSTALS : -
-
 -
-
-
-
-
-
-
-
-
-
0
   2020 :
-

- - - - - -
- -
0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 DAYS WITH : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  FOG : 1
-
 1
4
2
1
 1
-
2
6
 1
1
20
   2020 :
318-3--12
1--19
  FREEZING FOG : 1
-
 -
-
-
-
-
-
-
-
 -
-
1
   2020 :
2--- - - - - -
- - -2
  ICE FOG : -
-
-
-
-
-
-
-
-
-
-
-
0
   2020 :
- - - - - - - - -
- - - 0
  BLOWING SNOW : -
-
 -
1
-
-
-
-
-
-
-
-
1
   2020 :
-1-- - - - - -
- -- 1
  HAZE : 4
1
 2
2
2
3
7
4
-
-
 -
-
25
   2020 :
- 1---2-21
- 219
  SMOKE : -
-
-
-
-
-
1
-
-
-
-
-
1
   2020 :
- - - - - - - - -
- - - 0
  DUST : -
-
-
-
-
-
-
-
-
-
-
-
0
   2020 :
- - - - - - - - -
- - - 0
  BLOWING DUST : -
-
-
-
-
-
-
-
-
-
-
-
0
   2020 :
- - - - - - - - -
- - - 0
  BLOWING SAND : -
-
-
-
-
-
-
-
-
-
-
-
0
   2020 :
- - - - - - - - -
- - - 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
   2020 :
- - - - - - - - -
- - - 0
  EARTHQUAKE : -
-
 -
 -
 -
 -
 -
 -
 -
 -
 -
 -
 0
   2020 :
- - - - - - - - -
- - - 0
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
 BRIGHT SUNSHINE : Jan
 Feb
 Mar
 Apr
 May
 Jun
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 YEAR
  BRIGHT SUNSHINE DURATION : (h)
66134 206 221 266 255 230 220 183 116 102 48  2047
   2020 :
57
119
154
216
245
270
241
213
179
118
89
49
1950
  HIGHEST SOLAR RADIATION : (W/mē)
 656
 903
 1297
 1225
 1304
 1225
 1163
 1138
 1038
 874
 734
 496
 1304
  Date :
30th
11th
 29th
 11th
 11th
 23rd
 3rd
 15th
 9th
 1st
 2nd
 10th
 5/11
  Time :
1127
1143
 1344
 1358
 1335
 1410
 1236
 1207
 1150
 1234
 1343
 1236
 1335
   2020 :
649834917 1196 1225 1276 1237 1130 964 994 713 531 1276
  AVERAGE DAILY MAX SOLAR RADIATION : (W/mē)
345
563
 784
 899
 948
 1032
 868
 905
 814
 521
 461
 301
  703
   2020 :
3225345938939191012957937750581410 293 683
  DARKEST SKY : (m/asē)
20.24
19.49
 20.06
 20.31
 20.03
 20.15
 20.25
 20.12
 20.32
 20.34
 20.21
 19.97
 20.34
  Date :
16th
4th
 12th+
 17th
 6th
 9th
 13th
 19th
 13th
 6th
 10th
 12th
 10/6
  Time :
0305
0024
 0219
 0314
 0156
 0221
 0125
 0453
 0256
 0415
 0124
 0406
 0415
   2020 :
19.95
20.11
20.23
20.05
20.15
20.19
20.51
20.30
20.18
20.43
20.07
20.12
20.51
  AVERAGE DAILY MAX DARKEST SKY : (m/asē)
 18.96
 18.90
 19.52
 19.35
 19.65
 19.60
 19.59
 19.81
 19.63
 19.35
 19.35
 19.08
 19.40
   2020 :
19.0018.9619.4019.3919.6519.8220.2020.0319.7419.3819.5718.8519.50
 Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
YEAR
  2021
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.