| Other Years | ||||||||||||
| 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
| Day | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||||||||||||
| Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | Lo | Hi | |
| 1 | -4.2 | 2.8 | 7.1 | 11.2 | 4.3 | 6.3 | 6.6 | 10.7 | -0.8 | 5.2 | 7.7 | 13.8 | 9.5 | 15.3 | 9.8 | 18.7 | 9.4 | 14.2 | 6.8 | 15.1 | ||||
| 2 | -1.1 | 3.8 | 6.8 | 11.1 | 4.8 | 6.7 | 2.9 | 7.4 | -0.3 | 5.8 | 9.5 | 17.7 | 7.5 | 13.7 | 8.5 | 14.7 | 8.8 | 13.7 | 8.0 | 14.6 | ||||
| 3 | -2.2 | 2.0 | 4.9 | 7.0 | 6.2 | 11.0 | -0.4 | 5.9 | 3.3 | 10.1 | 5.4 | 10.9 | 12.8 | 15.9 | 11.9 | 15.5 | 8.7 | 16.1 | 6.8 | 12.6 | ||||
| 4 | -2.4 | 1.6 | 3.8 | 9.2 | 5.6 | 7.1 | 0.7 | 6.2 | 1.6 | 6.8 | 5.1 | 11.9 | 11.3 | 14.8 | 10.3 | 16.9 | 12.6 | 16.3 | 7.4 | 14.2 | ||||
| 5 | -4.1 | -0.6 | 0.8 | 7.3 | -0.5 | 5.6 | -3.5 | 6.7 | 0.9 | 5.5 | 7.6 | 13.9 | 7.8 | 13.2 | 14.4 | 17.3 | 15.2 | 17.0 | 8.5 | 12.2 | ||||
| 6 | -3.5 | -0.3 | 0.8 | 6.2 | -2.8 | 1.8 | -3.6 | 1.3 | -0.7 | 7.2 | 7.6 | 15.7 | 10.0 | 13.4 | 12.2 | 15.8 | 15.3 | 21.4 | 7.6 | 15.6 | ||||
| 7 | -3.6 | 1.9 | -2.9 | 3.6 | -4.0 | 1.2 | -2.5 | 4.6 | -0.4 | 8.0 | 6.3 | 13.5 | 12.3 | 15.8 | 11.7 | 16.6 | 14.8 | 17.8 | 12.8 | 16.8 | ||||
| 8 | -2.6 | 2.9 | -5.2 | -1.7 | -5.6 | 2.8 | 0.0 | 6.2 | 8.0 | 12.3 | 6.9 | 13.5 | 11.1 | 15.1 | 11.7 | 15.9 | 14.8 | 20.0 | 12.7 | 17.1 | ||||
| 9 | -3.5 | 1.7 | -4.4 | 0.4 | -2.1 | 5.1 | -1.5 | 4.9 | 9.2 | 12.3 | 11.8 | 15.7 | 11.3 | 13.6 | 12.0 | 17.5 | 16.2 | 20.2 | 11.5 | 16.0 | ||||
| 10 | -4.7 | 3.1 | -5.2 | -1.8 | 5.1 | 11.0 | -0.8 | 4.8 | 5.9 | 9.3 | 14.1 | 16.2 | 11.3 | 17.5 | 11.8 | 17.0 | 12.5 | 17.1 | 10.0 | 16.2 | ||||
| 11 | 1.7 | 5.7 | -3.0 | 0.1 | 2.0 | 7.7 | -2.4 | 3.1 | 4.9 | 10.2 | 12.7 | 17.2 | 11.1 | 14.7 | 12.6 | 17.6 | 11.3 | 15.1 | 6.2 | 12.5 | ||||
| 12 | 5.2 | 8.7 | -1.2 | 0.8 | 3.7 | 7.2 | -2.8 | 6.8 | 3.7 | 9.5 | 10.0 | 16.0 | 9.4 | 14.9 | 10.9 | 19.2 | 11.9 | 17.4 | 7.3 | 12.3 | ||||
| 13 | 6.6 | 8.2 | -0.6 | 7.3 | 1.9 | 4.6 | -0.4 | 7.1 | 3.3 | 9.1 | 10.1 | 16.9 | 13.3 | 17.1 | 14.8 | 17.6 | 13.3 | 16.2 | 7.4 | 14.2 | ||||
| 14 | 3.0 | 8.9 | 6.9 | 10.7 | 2.0 | 8.2 | 0.3 | 7.1 | 5.6 | 11.0 | 9.7 | 16.3 | 11.8 | 16.5 | 15.3 | 18.3 | 12.7 | 18.9 | 7.3 | 14.9 | ||||
| 15 | 2.5 | 5.8 | 8.1 | 10.5 | 5.7 | 9.8 | -1.7 | 6.4 | 7.1 | 11.2 | 9.0 | 15.3 | 12.9 | 18.1 | 14.5 | 16.9 | 12.8 | 16.9 | 8.3 | 15.4 | ||||
| 16 | 0.7 | 9.3 | 7.9 | 10.4 | 4.3 | 10.9 | -1.7 | 5.1 | 7.7 | 11.2 | 8.0 | 15.5 | 12.6 | 18.6 | 11.2 | 15.2 | 11.3 | 15.4 | 7.3 | 14.3 | ||||
| 17 | 0.6 | 3.3 | 7.8 | 9.6 | 3.4 | 8.6 | -2.2 | 4.0 | 6.2 | 10.9 | 9.7 | 12.7 | 12.9 | 18.3 | 11.6 | 14.2 | 14.2 | 16.4 | 11.5 | 15.1 | ||||
| 18 | 1.8 | 9.4 | 2.7 | 8.6 | 2.4 | 7.7 | -1.9 | 5.9 | 5.6 | 10.8 | 7.4 | 12.4 | 10.8 | 18.3 | 11.8 | 16.1 | 9.7 | 17.7 | 13.0 | 17.1 | ||||
| 19 | 7.2 | 9.5 | 4.8 | 10.7 | 4.1 | 9.2 | 1.8 | 7.9 | 7.8 | 10.3 | 6.5 | 13.5 | 11.8 | 20.4 | 14.0 | 18.5 | 9.2 | 15.3 | 15.5 | 16.6 | ||||
| 20 | 2.6 | 9.5 | 7.5 | 10.6 | 4.4 | 6.9 | 3.1 | 8.2 | 7.1 | 11.5 | 11.3 | 14.5 | 9.8 | 19.2 | 15.4 | 18.3 | 10.6 | 14.5 | 8.6 | 15.7 | ||||
| 21 | -0.1 | 4.4 | 6.1 | 9.3 | 4.2 | 8.4 | 1.9 | 8.8 | 6.7 | 8.8 | 9.3 | 13.4 | 13.8 | 20.4 | 14.0 | 19.4 | 10.3 | 16.3 | 4.5 | 10.4 | ||||
| 22 | -1.4 | 3.9 | 3.7 | 8.3 | 3.3 | 6.3 | -0.4 | 7.7 | 2.6 | 8.9 | 7.5 | 11.4 | 15.0 | 21.0 | 11.3 | 16.3 | 9.8 | 16.4 | 3.4 | 8.0 | ||||
| 23 | -4.7 | 1.1 | 5.9 | 10.6 | 3.5 | 8.1 | 3.3 | 8.3 | 3.8 | 9.3 | 7.4 | 11.8 | 12.5 | 17.9 | 10.4 | 18.2 | 10.6 | 17.8 | 6.3 | 10.0 | ||||
| 24 | -2.9 | 2.0 | 6.9 | 10.9 | 2.4 | 9.0 | 2.7 | 7.1 | 5.2 | 8.9 | 9.2 | 17.7 | 15.3 | 19.1 | 11.4 | 16.3 | 9.8 | 19.2 | 9.2 | 15.4 | ||||
| 25 | -5.0 | 0.2 | 1.1 | 7.6 | 5.1 | 9.2 | 2.6 | 7.2 | 6.8 | 10.8 | 8.5 | 13.9 | 15.2 | 18.8 | 10.6 | 16.7 | 12.6 | 17.4 | 11.9 | 13.0 | ||||
| 26 | -0.6 | 8.7 | 0.3 | 7.1 | 1.4 | 8.8 | 2.8 | 7.3 | 4.3 | 11.9 | 8.2 | 13.0 | 14.2 | 20.8 | 10.6 | 19.1 | 13.1 | 17.2 | ||||||
| 27 | 6.9 | 9.7 | 1.7 | 6.7 | 2.7 | 7.5 | 2.2 | 9.0 | 3.4 | 11.0 | 10.1 | 15.5 | 13.6 | 18.4 | 10.7 | 17.0 | 9.0 | 16.7 | ||||||
| 28 | 9.4 | 11.1 | 1.9 | 7.3 | 5.9 | 8.8 | 2.8 | 7.8 | 8.2 | 11.7 | 12.5 | 15.9 | 11.1 | 16.2 | 8.5 | 14.9 | 8.6 | 14.7 | ||||||
| 29 | 6.2 | 10.0 | 5.7 | 10.3 | 1.9 | 5.9 | 8.4 | 13.5 | 12.1 | 15.7 | 11.2 | 16.0 | 10.0 | 16.1 | 6.5 | 11.4 | ||||||||
| 30 | 4.9 | 10.6 | 5.7 | 10.3 | 0.8 | 6.6 | 7.7 | 12.9 | 10.9 | 16.5 | 12.7 | 16.2 | 8.8 | 15.8 | 8.0 | 15.8 | ||||||||
| 31 | 4.5 | 8.9 | 6.6 | 12.4 | 8.1 | 13.9 | 13.2 | 16.2 | 10.2 | 14.2 | ||||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| High | 11.1 | 11.2 | 12.4 | 10.7 | 13.9 | 17.7 | 21.0 | 19.4 | 21.4 | 17.1 | ||
| High Avg | 5.4 | 7.1 | 7.7 | 6.5 | 10.0 | 14.6 | 16.9 | 16.8 | 16.7 | 14.2 | ||
| Average | 3.1 | 4.9 | 5.4 | 3.5 | 7.5 | 11.9 | 14.5 | 14.2 | 14.0 | 11.5 | ||
| Low Avg | 0.6 | 2.7 | 2.9 | 0.4 | 4.9 | 9.1 | 11.9 | 11.7 | 11.5 | 8.8 | ||
| Low | -5.0 | -5.2 | -5.6 | -3.6 | -0.8 | 5.1 | 7.5 | 8.5 | 6.5 | 3.4 |
