Average Barometric Pressure Seasonal Summary ( inHg)

Data last updated 05/17/12 10:00. Northern Hemisphere Meterological Seasons Winter: December, January, February Spring: March, April, May Summer: June, July, August Fall: September, October, November Daily Detail Monthly Summary Seasonal Summary

Maximum Average Barometric Pressure
Date	Winter	Spring	Summer	Fall	Year
Dec 2011 / Nov 2012	30.39	30.24*	---	---	30.39*
Dec 2010 / Nov 2011	30.44	30.19	29.87	30.33	30.44
Dec 2009 / Nov 2010	30.25*	30.21	29.95*	30.39	30.39*
Dec 2008 / Nov 2009	30.36*	30.13	---	---	30.36*
Dec 2007 / Nov 2008	30.40*	30.32*	---	---	30.40*
Dec 2006 / Nov 2007	30.51*	30.42*	---	---	30.51*
Dec 2005 / Nov 2006	---	30.01*	---	---	30.01*
Max	30.51	30.42	29.95	30.39	30.51
Average Barometric Pressure
Date	Winter	Spring	Summer	Fall	Year
Dec 2011 / Nov 2012	30.06	29.89*	---	---	29.98*
Dec 2010 / Nov 2011	30.02	29.85	29.71	29.89	29.86
Dec 2009 / Nov 2010	29.96*	29.90	29.85*	29.89	29.91*
Dec 2008 / Nov 2009	30.08*	29.90	---	---	29.97*
Dec 2007 / Nov 2008	30.14*	29.97*	---	---	30.06*
Dec 2006 / Nov 2007	30.21*	30.00*	---	---	30.12*
Dec 2005 / Nov 2006	---	29.88*	---	---	29.88*
Avg	30.08	29.91	29.75	29.89	29.95
Minimum Average Barometric Pressure
Date	Winter	Spring	Summer	Fall	Year
Dec 2011 / Nov 2012	29.69	29.69	---	---	29.69
Dec 2010 / Nov 2011	29.62	29.52	29.58	29.62	29.52
Dec 2009 / Nov 2010	29.43	29.68	29.73	29.54	29.43
Dec 2008 / Nov 2009	29.84	29.63	---	---	29.63
Dec 2007 / Nov 2008	29.80	29.68	---	---	29.68
Dec 2006 / Nov 2007	29.85	29.69	---	---	29.69
Dec 2005 / Nov 2006	---	29.68	---	---	29.68
Min	29.43	29.52	29.58	29.54	29.43

Color Key
< 29.25	29.25 - 29.40	29.40 - 29.55	29.55 - 29.70	29.70 - 29.85	29.85 - 30.00	30.00 - 30.15	30.15 - 30.30	30.30 - 30.45	30.45 - 30.60	30.60 - 30.75	30.75 - 30.90	30.90>

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