STATION: ANCHORAGE-LAKE HOOD SEAPLANE BASE (PALH), AK
CLIMATOLOGICAL SUMMARY. Period of Record: Feb 1998 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 | 23.0 28.3 33.8 45.9 57.8 65.5 68.0 65.8 56.9 42.5 29.6 25.0 | 45.2
Avg Min Temp | 11.2 15.2 19.0 29.8 41.6 49.8 54.1 51.9 43.8 32.2 19.1 13.5 | 31.8
Avg Temperature | 17.1 21.7 26.4 37.8 49.7 57.7 61.1 58.8 50.3 37.3 24.4 19.2 | 38.5
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Extremes: | |
Extreme Max Temp| 48 51 50 72 80 83 85 85 69 68 56 49 | 85
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Date of Ext-Day | 07 06 20 29 27 26 08 16 21 09 26 26 |
-Year| 2001 2006 1998 2005 2006 2004 2003 2004 2000 2006 2002 1999 |
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Extreme Min Temp| -18 -25 -7 0 25 38 45 37 28 7 -9 -17 | -25
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Date of Ext-Day | 17 04 10 01 03 03 01 28 24 27 27 16 |
-Year| 2004 1999 1999 2004 2001 1999 2008 1998 2004 2001 2003 2001 |
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Heating Degree Days | 1484 1222 1197 815 475 223 133 195 440 857 1219 1419 | 9679
Cooling Degree Days | 0 0 0 0 0 2 11 4 0 0 0 0 | 18
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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 0.8 2.3 3.9 3.0 0.0 0.0 0.0 0.0 | 10.0
Max Temp <= 32 | 24.4 18.1 12.5 1.1 0.1 0.0 0.0 0.0 0.0 3.6 19.0 23.7 | 102.4
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Min Temp <= 32 | 30.6 26.6 29.3 19.0 1.5 0.0 0.0 0.0 1.6 14.9 26.6 30.3 | 180.3
Min Temp <= 20 | 22.3 17.3 15.2 3.0 0.0 0.0 0.0 0.0 0.0 2.2 15.5 22.5 | 98.1
Min Temp <= 0 | 7.0 4.3 1.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 1.7 4.2 | 18.4
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Avg Dew Point Temp | 11.4 15.4 15.9 25.5 34.5 44.2 49.9 49.7 41.6 29.8 18.4 14.0 | 29.2
Avg Wet Bulb Temp | 16.1 20.3 23.5 33.1 42.8 50.6 54.7 53.7 46.1 34.3 22.8 18.2 | 34.7
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Avg Sea Level Pres | 30.22 30.19 30.20 30.09 30.01 29.97 29.94 29.98 30.03 30.11 30.07 30.28 | 30.09
(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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
Heavy Fog | 4.0 4.2 2.3 0.5 0.1 0.0 0.1 0.4 0.5 1.5 3.3 3.1 | 19.8
Fog | 13.8 11.5 9.7 5.2 3.7 5.3 7.0 11.3 8.2 11.1 11.8 14.2 | 112.8
Hail | 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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PRECIPITATION (In) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Average Monthly | 0.66 0.61 0.53 0.50 0.55 1.09 1.86 2.63 3.48 1.73 0.88 0.98 | 15.50
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Maximum Daily | 0.50 0.56 0.39 1.34 0.46 0.87 1.06 1.86 1.24 1.38 0.88 0.54 | 1.86
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Date of Ext-Day | 03 14 13 25 26 24 04 18 30 01 10 20 |
-Year| 2005 2005 2005 2008 1999 2007 2001 2006 2004 2002 2004 1999 |
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Avg Number of Days: | |
>= 0.01 | 6.9 5.6 5.2 5.2 7.1 9.1 13.1 15.8 15.8 13.5 7.4 7.9 | 112.7
>= 0.10 | 2.3 2.0 1.8 1.3 1.8 3.1 5.7 7.5 9.2 5.2 2.8 3.2 | 45.9
>= 0.25 | 0.6 1.0 0.5 0.5 0.5 1.5 2.2 3.5 4.5 2.4 1.1 1.5 | 19.7
>= 0.50 | 0.1 0.1 0.0 0.1 0.0 0.5 0.8 1.0 1.8 0.5 0.2 0.1 | 5.2
>= 1.00 | 0.0 0.0 0.0 0.1 0.0 0.0 0.1 0.3 0.5 0.2 0.0 0.0 | 1.2
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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 4.4 5.8 5.4 6.3 6.0 5.4 4.6 5.0 5.1 4.8 4.6 | 5.2
Daily Avg Max 2-Min | 13.7 12.8 14.9 14.4 15.7 14.8 14.0 12.8 13.7 13.5 13.3 13.4 | 13.9
Daily Avg Peak Gust | 16.9 15.8 18.6 18.6 20.6 19.7 18.5 16.7 17.8 17.0 16.5 16.6 | 17.8
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Maximum Daily Avg | 20.0 16.6 28.4 17.4 18.5 14.9 15.6 16.8 17.4 14.1 20.8 18.1 | 28.4
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Maximum 2-Minute Avg| 33 37 53 33 29 29 25 29 31 31 32 38 | 53
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Date of Max 2min-Day| 06 02 12 02 27 05 19 16 22 17 14 08 |
-Year| 2004 2000 2003 2001 2006 2007 2001 1998 1999 2005 2006 2008 |
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Maximum Peak Gust | 46 52 67 44 37 40 36 38 45 49 43 48 | 67
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Date of Max Gust-Day| 09 02 13 02 14 05 02 23 21 10 26 08 |
-Year| 2002 2000 2003 2001 2004 2007 2003 2005 2000 2008 2002 2008 |
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Avg Number of Days: | |
Peak Gust >=30 | 3.3 1.9 3.3 2.2 3.0 2.1 1.4 0.9 1.8 1.9 2.1 2.5 | 26.4
Peak Gust >=40 | 0.4 0.4 0.8 0.1 0.0 0.1 0.0 0.0 0.1 0.2 0.3 0.5 | 2.8
Peak Gust >=50 | 0.0 0.1 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.5
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Max 2-Minute >=30| 0.3 0.3 1.4 0.1 0.0 0.0 0.0 0.0 0.3 0.2 0.4 0.0 | 2.9
Max 2-Minute >=40| 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.4
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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.