STATION: SITKA ROCKY GUTIERREZ ARPT (PASI), AK
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 | 40.1 41.6 41.6 47.4 52.3 57.5 60.0 61.9 57.1 50.7 44.3 41.9 | 49.7
Avg Min Temp | 31.9 32.8 32.0 36.2 42.2 48.2 52.0 52.6 48.2 41.7 35.6 33.2 | 40.5
Avg Temperature | 36.0 37.2 36.8 41.8 47.3 52.8 56.0 57.2 52.6 46.2 40.0 37.6 | 45.1
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Extremes: | |
Extreme Max Temp| 54 58 61 70 73 81 79 89 74 61 62 56 | 89
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Date of Ext-Day | 15 10 22 24 20 19 16 15 29 02 26 22 |
-Year| 2002 2006 1998 2003 2002 2004 1996 2004 2003 2008 2002 2002 |
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Extreme Min Temp| 11 11 5 15 29 38 43 42 33 11 13 6 | 5
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Date of Ext-Day | 26 28 15 07 06 01 03 27 30 06 24 14 |
-Year| 2004 2007 2006 2006 2002 1999 1996 1999 1996 2007 2006 2004 |
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Heating Degree Days | 899 785 875 695 550 366 278 243 371 583 751 851 | 7245
Cooling Degree Days | 0 0 0 0 0 1 0 2 0 0 0 0 | 3
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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 0.0 0.4 0.2 0.5 0.0 0.0 0.0 0.0 | 1.2
Max Temp <= 32 | 4.3 0.9 1.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 2.0 | 10.4
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Min Temp <= 32 | 14.1 12.8 14.4 5.8 0.5 0.0 0.0 0.0 0.0 1.5 8.5 12.3 | 70.0
Min Temp <= 20 | 3.5 0.9 1.7 0.3 0.0 0.0 0.0 0.0 0.0 0.1 1.1 1.7 | 9.2
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 | 30.3 31.0 28.8 34.1 40.4 47.1 51.7 52.4 47.8 40.5 34.3 31.4 | 39.1
Avg Wet Bulb Temp | 34.1 34.7 34.1 38.7 44.1 49.8 53.6 54.5 50.1 43.7 38.1 35.4 | 42.6
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Avg Sea Level Pres | 30.28 30.19 30.16 30.07 30.05 30.03 30.02 30.02 30.08 30.11 30.14 30.22 | 30.11
(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 | 0.3 0.1 0.1 0.2 0.1 0.1 0.0 0.2 0.4 1.0 0.4 0.7 | 3.5
Heavy Fog | 1.3 1.3 1.6 0.8 0.4 0.3 0.5 0.5 0.5 0.5 0.8 1.3 | 9.8
Fog | 19.0 15.6 16.2 13.5 13.5 14.5 17.1 15.9 17.2 18.3 14.5 18.7 | 194.1
Hail | 0.5 0.3 0.9 0.6 0.0 0.0 0.0 0.0 0.1 0.7 0.8 0.9 | 4.8
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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 | 7.61 5.35 5.31 4.36 3.89 2.36 4.55 6.76 12.26 13.37 8.85 9.48 | 84.15
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Maximum Daily | 2.49 1.87 2.16 1.60 1.79 0.78 2.22 3.33 3.74 3.36 4.74 3.15 | 4.74
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Date of Ext-Day | 27 11 10 01 11 14 18 31 20 19 22 27 |
-Year| 2000 2002 2001 1997 1997 2005 2008 2006 2004 1998 2005 1999 |
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Avg Number of Days: | |
>= 0.01 | 21.1 18.6 18.9 16.7 16.9 16.3 21.5 20.4 24.6 24.7 20.3 22.2 | 242.2
>= 0.10 | 15.1 11.7 13.1 10.8 10.2 7.8 12.1 13.0 18.7 20.5 15.2 17.3 | 165.6
>= 0.25 | 10.6 7.5 7.7 6.1 4.8 3.1 5.9 8.3 14.0 16.2 11.4 11.9 | 107.5
>= 0.50 | 5.5 2.7 3.2 3.0 2.4 0.8 2.5 4.8 9.1 10.3 6.2 6.1 | 56.5
>= 1.00 | 1.5 0.8 0.7 0.4 0.5 0.0 0.4 1.6 3.3 3.4 1.8 2.2 | 16.7
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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| 8.9 8.2 8.6 7.5 7.1 6.1 5.6 5.6 6.9 8.7 9.0 9.9 | 7.7
Daily Avg Max 2-Min | 20.7 19.2 20.3 18.1 16.9 15.1 14.4 14.7 17.5 20.8 20.9 22.8 | 18.5
Daily Avg Peak Gust | 25.9 23.9 25.5 22.2 20.4 18.0 17.2 17.9 21.7 26.4 26.4 29.2 | 22.9
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Maximum Daily Avg | 25.4 23.0 23.4 22.2 18.4 15.6 15.9 20.4 20.3 23.2 22.7 25.6 | 25.6
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Maximum 2-Minute Avg| 49 44 48 36 33 26 30 41 40 47 48 52 | 52
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Date of Max 2min-Day| 03 10 28 01 06 21 11 28 22 22 01 16 |
-Year| 2001 2002 2004 2005 2001 2008 1999 1998 1997 2008 1999 2004 |
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Maximum Peak Gust | 69 61 70 53 40 36 38 53 52 70 70 77 | 77
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Date of Max Gust-Day| 03 05 28 28 06 04 20 28 22 31 01 16 |
-Year| 2001 2004 2004 2006 2001 2004 2006 1998 1997 1999 1999 2004 |
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Avg Number of Days: | |
Peak Gust >=30 | 10.8 7.3 9.1 5.3 3.2 0.9 0.7 2.2 5.5 11.6 10.9 15.5 | 83.2
Peak Gust >=40 | 3.9 2.1 2.3 0.8 0.3 0.0 0.0 0.3 1.4 4.0 3.4 6.1 | 24.6
Peak Gust >=50 | 1.0 0.7 0.3 0.1 0.0 0.0 0.0 0.1 0.1 1.4 0.9 1.3 | 5.9
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Max 2-Minute >=30| 5.2 2.4 2.8 1.4 0.3 0.0 0.1 0.4 1.9 4.5 4.3 0.0 | 23.4
Max 2-Minute >=40| 0.6 0.3 0.2 0.0 0.0 0.0 0.0 0.1 0.1 0.9 0.5 0.0 | 2.7
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies. Average days
with Thunderstorms may be low due to 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.