Southern Hemisphere Meterological Seasons Summer: December, January, February Fall: March, April, May Winter: June, July, August Spring: September, October, November
Date
Heating Degree Days
Summer
Fall
Winter
Spring
Year
Dec 2023 / Nov 2024
82.2
451.9
725.0
74.2*
1333.3*
Dec 2022 / Nov 2023
100.2
289.3
719.3
377.6
1486.4
Dec 2021 / Nov 2022
56.4
336.1
611.6
397.6
1401.7
Dec 2020 / Nov 2021
121.6
332.6
713.9
379.6
1547.7
Dec 2019 / Nov 2020
106.3
367.0
669.9*
370.2
1513.4*
Dec 2018 / Nov 2019
89.3
326.9
723.4
382.5
1522.1
Dec 2017 / Nov 2018
66.2
333.4
723.1
415.0*
1537.7*
Dec 2016 / Nov 2017
128.0
353.2
714.7
382.8
1578.7
Dec 2015 / Nov 2016
113.2
293.1
746.5
377.2
1530.0
Dec 2014 / Nov 2015
131.6
370.4
758.7
470.0*
1730.7*
Dec 2013 / Nov 2014
97.0
334.6
731.6
432.2
1595.4
Dec 2012 / Nov 2013
102.6
332.0
722.2
339.9
1496.7
Dec 2011 / Nov 2012
138.9
381.0
718.2
422.4
1660.5
Dec 2010 / Nov 2011
32.9
261.0
730.6
420.3
1444.8
Dec 2009 / Nov 2010
53.5
299.5
725.5
356.0
1434.5
Max
138.9
451.9
758.7
470.0
1730.7
Avg
94.7
337.5
715.6
373.2
1521.0
Min
32.9
261.0
611.6
74.2
1333.3
Date
Cooling Degree Days
Summer
Fall
Winter
Spring
Year
Dec 2023 / Nov 2024
272.2
51.5
3.4
5.6*
332.7*
Dec 2022 / Nov 2023
135.6
72.1
0.9
58.3
266.9
Dec 2021 / Nov 2022
230.2
45.4
6.6
54.3
336.5
Dec 2020 / Nov 2021
215.1
75.0
1.8
59.4
351.3
Dec 2019 / Nov 2020
278.7
52.1
3.9*
63.7
398.4*
Dec 2018 / Nov 2019
255.5
83.7
1.6
77.3
418.1
Dec 2017 / Nov 2018
304.0
90.4
1.9
44.0*
440.3*
Dec 2016 / Nov 2017
219.7
71.9
2.4
40.0
334.0
Dec 2015 / Nov 2016
253.3
101.3
8.3
61.5
424.4
Dec 2014 / Nov 2015
204.7
92.5
2.3
55.3*
354.8*
Dec 2013 / Nov 2014
233.0
73.0
4.9
54.5
365.4
Dec 2012 / Nov 2013
251.6
96.8
5.1
62.6
416.1
Dec 2011 / Nov 2012
156.2
45.2
1.3
45.0
247.7
Dec 2010 / Nov 2011
244.7
39.3
2.2
56.8
343.0
Dec 2009 / Nov 2010
185.9
25.4
0.0
21.7
233.0
Max
304.0
101.3
8.3
77.3
440.3
Avg
229.4
67.7
3.1
50.7
350.9
Min
135.6
25.4
0.0
5.6
233.0
Color Key
< 300
300 - 600
600 - 900
900 - 1200
1200 - 1500
1500 - 1800
1800 - 2100
2100 - 2400
2400 - 2700
2700 - 3000
3000 - 3300
3300 - 3600
3600>
* denotes incomplete data for the month/year.
A Degree Day is a unit of measurement equal to a difference of one degree between the mean outdoor temperature and a reference temperature (18). Degree Days are used in estimating the energy needs for heating or cooling a building.