STATION: PHOENIX SKY HARBOR INTL AIRPORT (KPHX), AZ
CLIMATOLOGICAL SUMMARY. Period of Record: Jul 1996 to Dec 2008
Summaries based on unedited daily ASOS data. Errors may be present.
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TEMPERATURE (F) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Avg Max Temp | 67.4 69.6 77.5 84.1 95.6 104.0 106.3 104.3 100.2 88.6 76.5 66.1 | 86.7
Avg Min Temp | 45.9 47.9 53.8 59.6 69.9 78.1 84.0 83.1 77.6 65.1 53.4 44.4 | 63.6
Avg Temperature | 56.6 58.8 65.7 71.8 82.7 91.0 95.1 93.7 88.9 76.8 65.0 55.2 | 75.1
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Extremes: | |
Extreme Max Temp| 86 85 99 101 111 115 118 116 112 106 95 83 | 118
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Date of Ext-Day | 31 28 16 27 28 21 21 10 14 01 04 08 |
-Year| 2003 1999 2007 2000 2003 2008 2006 2003 2000 2003 2001 1996 |
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Extreme Min Temp| 29 37 38 40 45 61 69 64 64 44 36 32 | 29
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Date of Ext-Day | 14 13 03 02 17 04 15 28 21 27 30 24 |
-Year| 2007 2004 2002 1999 2005 1999 1999 2008 2004 1996 2004 1998 |
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Heating Degree Days | 262 182 82 27 1 0 0 0 0 8 81 303 | 946
Cooling Degree Days | 2 7 102 232 551 780 934 890 717 375 80 1 | 4671
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 2.8 9.4 24.5 29.2 30.8 30.8 28.4 16.2 1.5 0.0 | 173.6
Max Temp >= 75 | 5.2 7.6 19.3 25.3 30.7 30.0 31.0 31.0 30.0 28.8 18.3 3.2 | 260.4
Max Temp <= 32 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
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Min Temp <= 32 | 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 | 0.5
Min Temp <= 20 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
Min Temp <= 0 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
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Avg Dew Point Temp | 31.9 32.0 33.4 31.8 34.1 38.0 55.0 59.1 51.3 40.4 34.0 30.7 | 39.3
Avg Wet Bulb Temp | 45.4 46.7 50.4 52.6 57.8 62.2 70.1 71.2 66.3 57.3 48.7 44.3 | 56.1
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Avg Sea Level Pres | 30.05 30.01 29.92 29.88 29.78 29.77 29.78 29.79 29.78 29.86 29.98 30.07 | 29.89
(Inches of Mercury) | |
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WEATHER | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
See disclaimer below| |
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Avg Number of Days: | |
Thunderstorms | 0.6 0.7 0.8 0.4 0.2 0.6 5.0 4.7 3.1 1.9 0.5 0.2 | 18.7
Heavy Fog | 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.1 0.0 0.2 | 0.6
Fog | 2.8 3.6 1.6 1.4 0.0 0.0 1.1 1.1 0.9 1.5 0.8 3.1 | 17.8
Hail | 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.3
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PRECIPITATION (In) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Average Monthly | 0.70 0.98 0.81 0.36 0.04 0.03 1.01 0.92 0.36 0.47 0.35 0.52 | 6.56
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Maximum Daily | 0.87 1.42 1.53 0.74 0.28 0.15 1.30 0.94 1.06 0.94 1.23 0.69 | 1.53
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Date of Ext-Day | 27 13 06 05 22 20 13 28 19 27 30 07 |
-Year| 2008 2003 2000 2001 2008 2000 2008 2008 1999 2000 2007 2007 |
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Avg Number of Days: | |
>= 0.01 | 3.2 4.3 3.0 2.2 0.4 0.4 4.0 4.8 2.9 2.5 1.9 3.4 | 33.1
>= 0.10 | 1.8 2.5 1.3 1.1 0.2 0.2 2.2 2.4 1.0 1.4 0.8 1.6 | 16.3
>= 0.25 | 1.0 1.3 0.9 0.4 0.1 0.0 1.1 1.2 0.3 0.9 0.5 0.8 | 8.5
>= 0.50 | 0.4 0.5 0.5 0.2 0.0 0.0 0.8 0.7 0.1 0.2 0.2 0.2 | 3.7
>= 1.00 | 0.0 0.1 0.3 0.0 0.0 0.0 0.3 0.0 0.1 0.0 0.1 0.0 | 0.8
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WIND (MPH) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Daily Avg Wind Speed| 4.9 5.5 6.5 7.2 7.1 7.2 7.3 6.8 6.2 5.6 4.9 4.6 | 6.2
Daily Avg Max 2-Min | 13.4 14.9 16.2 18.7 18.0 18.8 20.4 19.9 17.0 14.6 12.8 12.9 | 16.5
Daily Avg Peak Gust | 16.4 18.2 20.2 23.5 22.8 23.7 25.8 25.2 21.7 18.8 16.0 15.9 | 20.7
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Maximum Daily Avg | 13.9 12.9 82.2 16.1 15.1 14.8 12.7 11.4 11.6 14.5 15.1 12.8 | 82.2
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Maximum 2-Minute Avg| 33 35 43 51 38 45 51 54 39 37 32 39 | 54
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Date of Max 2min-Day| 04 18 06 21 22 25 23 28 06 21 09 20 |
-Year| 2005 2004 1998 2001 2006 2006 2006 2008 2002 2004 2008 2002 |
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Maximum Peak Gust | 38 43 53 59 41 54 77 75 51 48 38 47 | 77
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Date of Max Gust-Day| 04 18 06 21 22 25 18 28 19 25 09 20 |
-Year| 2005 2004 1998 2001 2006 2006 2005 2008 1999 1998 2008 2002 |
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Avg Number of Days: | |
Peak Gust >=30 | 1.6 2.1 3.3 5.6 3.5 4.3 7.3 7.8 4.3 2.2 1.1 1.7 | 44.8
Peak Gust >=40 | 0.0 0.2 0.3 1.0 0.3 0.4 2.3 1.9 0.7 0.3 0.0 0.2 | 7.7
Peak Gust >=50 | 0.0 0.0 0.1 0.3 0.0 0.2 0.7 0.6 0.2 0.0 0.0 0.0 | 2.0
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Max 2-Minute >=30| 0.4 0.8 0.8 2.0 0.8 1.2 3.6 3.2 1.4 0.5 0.3 0.0 | 15.0
Max 2-Minute >=40| 0.0 0.0 0.1 0.3 0.0 0.2 0.7 0.5 0.0 0.0 0.0 0.0 | 1.7
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies. Average days
with Thunderstorms may be low due to poor detection.
Heavy Fog = Visibility less than or equal to 1/4 mile.
Fog = Visibility greater than 1/4 mile or less than 7 miles.
Peak Gust = Maximum 5-second average.
Snowfall data not observed at ASOS stations.
Copyright ©2009 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.