STATION: KETCHIKAN INTL AIRPORT (PAKT), AK
CLIMATOLOGICAL SUMMARY. Period of Record: Jan 1997 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 | 38.8 40.9 42.8 49.1 55.8 61.5 63.4 64.4 58.2 50.7 43.6 40.2 | 50.8
Avg Min Temp | 29.9 30.8 30.9 34.8 40.9 47.9 51.5 51.8 46.9 40.2 34.5 31.7 | 39.3
Avg Temperature | 34.4 35.9 36.9 42.0 48.3 54.7 57.4 58.1 52.6 45.4 39.1 36.0 | 45.1
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Extremes: | |
Extreme Max Temp| 57 56 61 72 77 85 79 80 69 63 61 53 | 85
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Date of Ext-Day | 30 01 21 27 24 17 02 11 30 05 22 14 |
-Year| 2000 1998 1998 2005 2008 2005 1998 2005 2008 2001 2002 2002 |
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Extreme Min Temp| -1 7 6 19 27 35 39 39 32 23 5 7 | -1
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Date of Ext-Day | 25 02 08 03 03 03 03 30 23 11 28 01 |
-Year| 1997 2004 2002 2007 2002 2003 2002 1998 2003 1997 2006 2001 |
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Heating Degree Days | 950 823 872 691 517 312 236 216 373 606 778 899 | 7275
Cooling Degree Days | 0 0 0 0 0 4 2 3 0 0 0 0 | 8
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Avg Number of Days: | |
Max Temp >= 90 | 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
Max Temp >= 75 | 0.0 0.0 0.0 0.0 0.3 1.6 1.1 1.5 0.0 0.0 0.0 0.0 | 4.5
Max Temp <= 32 | 5.3 1.4 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 3.4 | 12.7
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Min Temp <= 32 | 16.7 16.8 18.1 10.8 3.0 0.0 0.0 0.0 0.1 3.9 10.5 16.5 | 96.5
Min Temp <= 20 | 4.8 2.3 2.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.2 2.8 | 13.8
Min Temp <= 0 | 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.3
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Avg Dew Point Temp | 31.1 32.1 31.4 35.7 41.4 47.6 52.1 51.7 48.7 41.8 36.0 32.6 | 40.2
Avg Wet Bulb Temp | 33.4 34.6 34.9 39.4 45.2 51.0 54.4 54.0 50.5 43.8 38.0 35.0 | 42.9
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Avg Sea Level Pres | 30.16 30.18 30.12 30.05 30.04 30.04 30.05 30.03 30.06 30.12 30.14 30.18 | 30.10
(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 | 0.0 0.0 0.0 0.0 0.0 0.2 0.2 0.3 0.1 0.2 0.1 0.0 | 1.1
Heavy Fog | 2.4 1.7 1.2 0.9 0.4 0.4 1.0 1.0 1.5 2.0 1.8 2.3 | 16.7
Fog | 23.1 17.8 20.9 17.8 16.6 15.3 17.8 16.4 19.7 21.2 19.9 22.6 | 229.0
Hail | 0.0 0.0 0.2 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 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 | 17.23 12.34 13.58 12.42 10.35 7.53 9.67 12.83 15.65 19.60 18.18 18.78 | 168.16
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Maximum Daily | 4.72 3.91 4.35 4.40 4.25 3.80 4.86 4.82 4.17 4.53 6.05 5.08 | 6.05
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Date of Ext-Day | 14 11 24 11 23 24 24 26 08 21 08 12 |
-Year| 2004 2005 1997 2008 2003 2002 2000 2002 1999 2008 2005 1997 |
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Avg Number of Days: | |
>= 0.01 | 23.4 19.2 23.1 19.6 17.9 17.9 19.8 17.6 22.0 24.8 22.6 23.5 | 251.4
>= 0.10 | 18.6 14.3 18.0 15.3 13.5 12.0 13.1 12.4 17.0 20.2 19.2 19.2 | 192.9
>= 0.25 | 14.5 11.0 13.4 10.6 9.9 8.8 9.0 10.0 12.0 16.2 15.9 16.6 | 147.7
>= 0.50 | 11.2 8.8 8.7 7.5 6.5 4.9 5.8 7.7 9.3 11.7 12.0 12.1 | 106.3
>= 1.00 | 6.2 3.9 4.1 4.2 3.4 1.8 2.7 4.2 6.1 7.3 5.8 6.8 | 56.4
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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| 8.0 8.1 8.2 8.1 7.7 7.4 7.2 7.0 7.1 7.5 7.6 8.2 | 7.7
Daily Avg Max 2-Min | 18.3 18.4 19.2 18.4 16.6 15.5 15.1 15.3 16.5 18.8 19.0 20.4 | 17.6
Daily Avg Peak Gust | 24.9 24.3 25.6 24.0 21.9 20.5 20.0 20.3 22.2 25.3 25.5 27.4 | 23.5
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Maximum Daily Avg | 20.8 24.1 21.2 22.9 19.5 16.7 16.7 19.6 19.1 19.6 20.8 23.8 | 24.1
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Maximum 2-Minute Avg| 43 38 53 40 33 30 32 31 37 45 54 45 | 54
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Date of Max 2min-Day| 26 07 29 23 05 05 14 31 29 23 10 18 |
-Year| 2003 2006 2004 2001 1999 1999 2005 2001 2001 2007 2007 2004 |
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Maximum Peak Gust | 64 56 74 60 48 38 45 46 54 59 63 66 | 74
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Date of Max Gust-Day| 15 07 29 12 16 27 08 28 06 24 10 22 |
-Year| 2007 2006 2004 2008 2006 1999 2006 1999 2003 2005 2007 2003 |
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Avg Number of Days: | |
Peak Gust >=30 | 10.6 8.6 9.3 7.2 4.2 1.6 1.9 2.9 5.5 9.7 11.0 12.5 | 85.0
Peak Gust >=40 | 3.8 2.4 3.6 2.2 0.4 0.0 0.2 0.3 1.3 4.3 3.6 6.1 | 28.1
Peak Gust >=50 | 0.6 0.1 0.4 0.3 0.0 0.0 0.0 0.0 0.3 1.0 0.8 1.7 | 5.0
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Max 2-Minute >=30| 3.4 2.8 3.5 2.2 0.6 0.2 0.3 0.2 1.2 4.2 3.8 0.0 | 22.3
Max 2-Minute >=40| 0.3 0.0 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.6 0.3 0.0 | 1.4
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies. Average days
with Thunderstorms may be low due to early mis-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.