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Weather summary to 2011 Lindsay and Bowmanville/Markham

1975 - 2011 at Lindsay = 37 years


Crop Heat Units - May 11 to frost (-2).
Frost on October 27, 2011 - Average = October 9
Year CHU Year CHU 1975 - 2011 average 2008 2009 2010 2011
1992 2607 2002 3054 May 308 253 302 416 389
1993 2590 2003 3018 June 616 681 572 657 660
1994 2924 2004 3180 July 756 789 659 838 817
1995 3113 2005 3358 Aug 716 705 740 773 747
1996 2871 2006 3124 Sept 477 541 484 520 584
1997 2850 2007 3410 Oct 93 142 48 125 230
1998 3155 2008 3111 TOTAL 2968 3111 2805 3329 3427
1999 2979 2009 2805 + 42 May 8 =2847
2000 2593 2010 3329 + 127 May 1 = 3456
2001 3027 2011 3427 - 37 May 13 = 3390
Rainfall(mm) - April to October 1975 - 2011 average 2008 2009 2010 2011
Year mm Year mm April 64 49 133 16 70
1992 587 2002 619 May 85 123 95 77 97
1993 574 2003 587 June 84 147 61 141 77
1994 422 2004 482 July 78 157 94 67 117
1995 623 2005 513 Aug 85 115 107 63 102
1996 613 2006 667 Sept 89 116 59 68 89
1997 513 2007 434 Oct 75 44 95 57 89
1998 517 2008 751 TOTAL 558 751 644 489 640
1999 493 2009 644            
2000 677 2010 489            
2001 471 2011 640            

1968 - 2011 at Bowmanville, Markham = 44 years


Crop Heat Units - May 11 to frost (-2).
Frost on October 28, 2011 - Average = October 12
Year CHU Year CHU 1968 - 2011 ave 2008 2009 2010 2011
1992 2780 2002 3467 May 290 261 333 401 373
1993 2870 2003 3126 June 614 697 602 674 671
1994 2971 2004 3247 July 758 815 705 848 861
1995 3217 2005 3606 Aug 728 726 753 796 794
1996 3068 2006 3309 Sept 513 551 568 516 596
1997 2955 2007 3578 Oct 110 159 66 236 255
1998 3371 2008 3209 TOTAL 3013 3209 3027 3471 3550
1999 3112 2009 3027 + 33 May 8 =3060
2000 2751 2010 3471 + 131 May 2 =3602
2001 3055 2011 3550 - 29 May 13 = 3521
Rainfall(mm) - April to October 1968 - 2011 average 2008 2009 2010 2011
Year mm Year mm April 72 63 137 36 91
1992 658 2002 421 May 77 62 92 63 123
1993 592 2003 547 June 79 118 71 229 96
1994 423 2004 468 July 69 193 110 77 51
1995 540 2005 431 Aug 75 93 108 91 80
1996 633 2006 543 Sept 82 107 49 89 90
1997 507 2007 315 Oct 70 53 78 70 101
1998 440 2008 689 TOTAL 523 689 645 655 632
1999 516 2009 645            
2000 670 2010 655            
2001 526 2011 632