STATION: SAN LUIS OBISPO REGIONAL ARPT (KSBP), CA
CLIMATOLOGICAL SUMMARY. Period of Record: Apr 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 | 63.6 63.8 66.0 67.3 71.8 75.0 78.0 78.6 78.3 75.7 70.3 64.7 | 71.1
Avg Min Temp | 39.9 41.7 43.3 44.2 47.6 50.6 54.2 54.3 53.1 48.8 44.6 39.6 | 46.8
Avg Temperature | 51.7 52.8 54.6 55.8 59.7 62.8 66.1 66.4 65.7 62.2 57.5 52.2 | 59.0
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Extremes: | |
Extreme Max Temp| 85 87 90 100 99 113 99 96 105 100 93 82 | 113
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Date of Ext-Day | 31 09 12 26 02 20 15 30 02 07 15 16 |
-Year| 2003 2006 2007 2004 2004 2008 1998 2005 2007 2008 2008 1998 |
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Extreme Min Temp| 21 27 31 30 35 38 44 45 43 38 28 22 | 21
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Date of Ext-Day | 14 01 04 04 15 07 04 15 27 30 13 22 |
-Year| 2007 2002 2002 1999 1999 1999 1999 1999 1998 1998 2000 1998 |
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Heating Degree Days | 412 346 324 283 179 90 24 14 39 119 236 398 | 2463
Cooling Degree Days | 0 1 3 6 14 24 58 59 61 32 9 0 | 268
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.1 0.6 1.1 0.9 1.4 1.0 2.8 3.3 0.5 0.0 | 11.7
Max Temp >= 75 | 2.8 3.1 4.1 5.0 8.0 13.6 21.6 24.7 19.9 14.1 8.0 3.5 | 128.4
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 | 3.7 1.6 0.5 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.9 3.6 | 10.5
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 | 40.5 42.9 44.6 45.4 48.6 50.9 53.5 54.0 52.3 47.1 44.3 39.4 | 47.0
Avg Wet Bulb Temp | 46.0 47.6 49.0 49.9 53.0 55.3 57.6 58.0 57.1 53.1 50.0 45.6 | 51.9
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Avg Sea Level Pres | 30.13 30.08 30.06 30.03 29.98 29.94 29.95 29.94 29.91 29.98 30.08 30.14 | 30.02
(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 | 1.1 2.0 1.4 1.6 0.7 0.3 0.8 0.6 0.8 0.8 0.6 0.5 | 11.3
Heavy Fog | 4.5 2.9 3.2 3.4 2.5 3.0 1.9 3.4 5.4 5.8 5.0 3.3 | 44.3
Fog | 14.1 14.6 14.4 13.4 14.8 16.6 15.7 18.4 15.6 14.8 12.8 11.5 | 176.7
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 | 3.55 3.64 2.15 1.62 0.66 0.03 0.00 0.01 0.06 0.80 1.52 2.78 | 16.82
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Maximum Daily | 2.75 2.19 2.18 2.05 1.58 0.23 0.00 0.04 0.20 1.79 2.06 2.40 | 2.75
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Date of Ext-Day | 02 25 22 17 21 08 15 04 19 04 18 |
-Year| 2006 2004 2005 2000 2006 2000 2008 1998 2004 2004 2007 |
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Avg Number of Days: | |
>= 0.01 | 9.4 11.8 8.7 7.2 3.0 0.7 0.0 0.8 1.6 5.6 7.9 9.4 | 66.2
>= 0.10 | 5.0 6.8 4.3 3.0 1.3 0.1 0.0 0.0 0.3 1.6 2.5 4.1 | 28.9
>= 0.25 | 3.6 4.5 2.3 1.8 0.8 0.0 0.0 0.0 0.0 0.9 1.7 2.6 | 18.3
>= 0.50 | 2.4 2.6 1.2 0.8 0.5 0.0 0.0 0.0 0.0 0.3 1.0 1.6 | 10.5
>= 1.00 | 1.1 1.0 0.5 0.4 0.1 0.0 0.0 0.0 0.0 0.2 0.5 0.8 | 4.5
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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| 5.4 5.9 7.3 8.1 8.6 8.0 7.1 6.9 6.6 5.9 5.5 5.2 | 6.7
Daily Avg Max 2-Min | 17.0 18.1 20.2 21.3 21.6 19.9 17.9 17.9 18.2 18.7 17.6 17.4 | 18.8
Daily Avg Peak Gust | 20.6 21.9 24.1 25.6 25.7 23.5 21.1 20.8 21.6 22.2 21.3 21.2 | 22.5
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Maximum Daily Avg | 17.3 16.4 19.2 18.9 18.9 16.3 15.6 14.3 14.9 14.5 13.8 16.2 | 19.2
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Maximum 2-Minute Avg| 36 38 39 47 35 31 30 29 32 30 36 40 | 47
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Date of Max 2min-Day| 02 23 13 03 10 06 24 30 04 01 24 16 |
-Year| 2006 2008 2002 1999 2004 2007 1999 1999 2007 2007 2001 2002 |
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Maximum Peak Gust | 49 51 46 56 43 40 38 40 39 45 47 52 | 56
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Date of Max Gust-Day| 27 23 04 03 10 06 17 16 04 05 24 16 |
-Year| 2008 2008 2001 1999 2004 2007 2008 2007 2007 2008 2001 2002 |
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Avg Number of Days: | |
Peak Gust >=30 | 2.9 2.9 5.5 9.1 9.8 5.4 2.3 1.6 3.7 3.3 2.3 3.6 | 52.3
Peak Gust >=40 | 0.5 0.2 0.6 0.2 0.1 0.1 0.0 0.1 0.0 0.3 0.2 0.6 | 2.9
Peak Gust >=50 | 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 | 0.3
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Max 2-Minute >=30| 0.6 0.6 0.9 1.7 1.3 0.6 0.1 0.0 0.3 0.2 0.3 0.0 | 6.5
Max 2-Minute >=40| 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.1
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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.