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SRP^® - Delivering More Than Power

Weather report

Please use the weather information below to better understand fluctuations in your heating and cooling costs.

The following report uses data collected at Sky Harbor International Airport in Phoenix by the National Oceanic and Atmospheric Administration (NOAA).

Summary for September 2008

Average high temperature	100
Average low temperature	78
Average daily temperature	89
Average dew point	51
Cooling degree hours (base 75°)	10,503
Heating degree hours (base 65°)	0
Cooling degree days (base 65°)	730
Heating degree days (base 65°)	0

Historical summary for September

	Cooling degree hours (base 75°)	Heating degree hours (base 65°)
2008	10,503	0
2007	10,482	0
2006	7,915	0
10 year average	10,299	0

Monthly history

2008 2007 2006 10 year avg. Degree hours Heating Cooling Heating Cooling Heating Cooling Heating Cooling January 7,864 0 9,324 7 6,567 55 7,138 43 February 6,058 112 4,588 100 3,952 198 5,014 99 March 2,530 1,019 2,096 1,750 4,133 230 2,941 992 April 706 2,626 779 2,723 627 2,115 1,032 2,506 May 553 5,049 28 7,861 0 8,223 105 7,450 June 0 13,710 0 13,334 0 14,436 2 12,788 July 0 14,735 0 15,313 0 15,915 6 15,197 August 0 13,367 0 15,136 0 12,586 0 13,671 September 0 10,503 0 10,482 0 7,915 0 10,299 October 441 1,963 119 4,015 332 3,018 372 3,669 November     1,363 1,450 2,460 967 2,780 633 December     9,474 0 8,714 11 7,196 8 Year total 18,152 63,084 27,771 72,171 26,785 65,669 26,586 67,355

Monthly detail
Sep 2008 Aug 2008 Jul 2008	Jun 2008 May 2008 Apr 2008	Mar 2008 Feb 2008 Jan 2008	Dec 2007 Nov 2007 Oct 2007

Definitions

Degree hour: The difference between a base temperature of 65°F (heating), 75°F (cooling), and the average ambient air temperature for the hour. If the average ambient air temperature for the hour falls below 65°F the degree hour is recorded as a heating degree hour. A cooling degree hour is recorded if the average air temperature for the hour rises above 75°F.

Degree day: The difference between a base temperature of 65°F (heating and cooling) and the average ambient air temperature for the day. If the average ambient air temperature for the day falls below 65°F, the degree day is recorded as a heating degree day. A cooling degree day is recorded if the average air temperature for the day rises above 65°F.

Base 75: Used in calculating the degree hours based on an outside air temperature of 75°F.

Base 65: Used in calculating the degree hours based on an outside air temperature of 65°F.

Dew point: The temperature to which air must be cooled in order to reach saturation (assuming air pressure and moisture content are constant).

Notification of updates

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If you have questions or problems with this service, please click here to contact us or call (602) 236-8858 . Technical Support is available to help you Monday through Friday, 8:30 a.m. to 5 p.m., excluding holidays. If you contact us outside of those hours, we will reply to all messages in the order in which they were received. Thank you.