Heat Index Seasonal Summary (°F)

Data Last Updated: 6/23/2017 @ 07:00 AM



Northern Hemisphere Meterological Seasons
Winter: December, January, February
Spring: March, April, May
Summer: June, July, August
Fall: September, October, November

 Daily DetailMonthly SummarySeasonal Summary 




 Maximum Heat Index
DateWinterSpringSummerFallYear
Dec 2016 / Nov 201778.689.5102.4*---102.4*
Dec 2015 / Nov 201677.5*96.6113.3100.5113.3*
Dec 2014 / Nov 201565.589.5*115.9*101.3115.9*
Dec 2013 / Nov 201475.8*96.0113.3101.4113.3*
Dec 2012 / Nov 201376.991.5106.4*101.6*106.4*
Dec 2011 / Nov 201262.1*94.9*76.9*84.1*94.9*
Maximum78.6 96.6 115.9 101.6 115.9
 
 Average Maximum Heat Index
DateWinterSpringSummerFallYear
Dec 2016 / Nov 201754.3 4.4 more than the Winter average.73.5 2.9 more than the Spring average.90.0* 2.4 more than the Summer average.---66.9*3.1 less than the yearly average.
Dec 2015 / Nov 201652.5* 2.5 more than the Winter average.72.8 2.2 more than the Spring average.99.3 11.7 more than the Summer average.78.6 5 more than the Fall average.75.9*5.9 more than the yearly average.
Dec 2014 / Nov 201545.3 4.7 less than the Winter average.71.6* 1.1 more than the Spring average.94.4* 6.8 more than the Summer average.74.2 0.5 more than the Fall average.71.5*1.4 more than the yearly average.
Dec 2013 / Nov 201447.8* 2.2 less than the Winter average.68.5 2 less than the Spring average.91.5 3.8 more than the Summer average.70.3 3.3 less than the Fall average.71.6*1.6 more than the yearly average.
Dec 2012 / Nov 201351.8 1.8 more than the Winter average.68.3 2.2 less than the Spring average.78.1* 9.6 less than the Summer average.78.0* 4.4 more than the Fall average.68.3*1.7 less than the yearly average.
Dec 2011 / Nov 201244.4* 5.6 less than the Winter average.68.6* 2 less than the Spring average.59.0* 28.7 less than the Summer average.66.0* 7.6 less than the Fall average.61.9*8.1 less than the yearly average.
Average50.0 70.6 87.6 73.6 70.0
 
 Minimum Maximum Heat Index
DateWinterSpringSummerFallYear
Dec 2016 / Nov 201723.538.676.7---23.5
Dec 2015 / Nov 201624.142.976.250.224.1
Dec 2014 / Nov 201522.028.969.741.622.0
Dec 2013 / Nov 201424.224.867.732.024.2
Dec 2012 / Nov 201330.333.426.950.726.9
Dec 2011 / Nov 201222.231.535.542.522.2
Minimum22.0 24.8 26.9 32.0 22.0
 
Color Key
< 0.0 0.0 - 10.0 10.0 - 20.0 20.0 - 30.0 30.0 - 40.0 40.0 - 50.0 50.0 - 60.0 60.0 - 70.0 70.0 - 80.0 80.0 - 90.0 90.0 - 100.0 100.0 - 110.0110.0>
* denotes incomplete data for the month/year.

NWS Official Wind Chill Chart