STATION: SAN DIEGO INTERNATIONAL AIRPORT (KSAN), CA
CLIMATOLOGICAL SUMMARY. Period of Record: Jul 1996 to Dec 2008
Summaries based on unedited daily ASOS data. Errors may be present.
-----------------------------------------------------------------------------------------------
TEMPERATURE (F) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
| |
Avg Max Temp | 64.5 64.6 65.4 66.3 68.6 70.6 74.3 76.1 75.2 72.5 68.8 64.8 | 69.3
Avg Min Temp | 49.7 50.7 53.5 55.5 59.7 62.4 65.6 67.0 65.3 60.4 54.6 48.9 | 57.8
Avg Temperature | 57.1 57.6 59.5 60.9 64.1 66.5 70.0 71.5 70.3 66.5 61.7 56.9 | 63.5
| |
Extremes: | |
Extreme Max Temp| 87 87 91 94 93 96 99 90 96 94 90 83 | 99
| |
Date of Ext-Day | 19 22 29 27 02 27 22 21 05 08 02 18 |
-Year| 2005 2002 2004 2008 2004 2006 2006 1997 2004 2008 1997 2004 |
| |
Extreme Min Temp| 35 41 44 45 50 54 60 50 56 48 41 39 | 35
| |
Date of Ext-Day | 15 01 30 01 01 03 04 20 20 21 30 27 |
-Year| 2007 2002 1998 1999 1999 1999 1998 1997 1997 2002 2004 1997 |
| |
Heating Degree Days | 249 209 179 133 58 17 1 0 0 20 114 252 | 1234
Cooling Degree Days | 4 2 7 10 31 61 155 202 158 65 15 0 | 709
| |
Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.1 0.1 0.2 0.2 0.1 0.1 0.5 0.3 0.1 0.0 | 1.6
Max Temp >= 75 | 2.9 1.9 2.7 2.4 3.7 3.7 11.6 20.6 14.1 8.4 4.5 1.9 | 78.4
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
| |
Min 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
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
| |
Avg Dew Point Temp | 44.7 46.0 47.9 49.5 54.1 57.0 60.9 62.5 60.7 54.7 49.4 43.3 | 52.6
Avg Wet Bulb Temp | 50.9 51.7 53.3 54.6 58.2 60.6 64.1 65.6 64.2 59.6 55.2 50.3 | 57.4
| |
------------------------------------------------------------------------------------------------------
| |
Avg Sea Level Pres | 30.11 30.08 30.04 30.02 29.97 29.93 29.94 29.92 29.90 29.96 30.05 30.11 | 30.00
(Inches of Mercury) | |
------------------------------------------------------------------------------------------------------
| |
WEATHER | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
See disclaimer below| |
| |
Avg Number of Days: | |
Thunderstorms | 0.2 0.4 0.2 0.2 0.0 0.0 0.2 0.2 0.3 0.1 0.3 0.2 | 2.3
Heavy Fog | 1.6 0.7 0.8 0.4 0.2 0.1 0.2 0.2 1.2 2.0 2.6 2.5 | 12.5
Fog | 15.8 12.8 13.1 9.2 10.7 10.4 9.8 14.0 12.4 13.5 13.9 12.8 | 148.2
Hail | 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.2
| |
------------------------------------------------------------------------------------------------------
| |
PRECIPITATION (In) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
| |
Average Monthly | 1.67 2.65 0.92 0.74 0.18 0.02 0.03 0.01 0.11 0.77 0.76 1.17 | 9.03
| |
Maximum Daily | 1.08 2.18 1.12 1.06 0.77 0.07 0.20 0.09 0.76 2.70 1.26 1.60 | 2.70
| |
Date of Ext-Day | 03 21 04 14 22 08 20 06 25 27 27 29 |
-Year| 2005 2005 2005 2003 2006 1998 1998 1997 1997 2004 2008 2004 |
| |
Avg Number of Days: | |
>= 0.01 | 6.7 7.8 6.0 4.6 1.4 0.6 0.5 0.2 0.9 2.8 3.6 5.8 | 41.0
>= 0.10 | 3.7 4.8 1.9 2.2 0.6 0.0 0.1 0.0 0.2 1.2 1.8 2.5 | 19.0
>= 0.25 | 2.3 2.9 1.2 1.2 0.2 0.0 0.0 0.0 0.1 0.8 0.9 1.4 | 11.2
>= 0.50 | 1.2 1.8 0.6 0.2 0.1 0.0 0.0 0.0 0.1 0.5 0.4 0.5 | 5.3
>= 1.00 | 0.2 0.8 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.2 | 1.7
| |
------------------------------------------------------------------------------------------------------
| |
WIND (MPH) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
| |
Daily Avg Wind Speed| 4.8 5.9 6.4 7.1 6.9 7.0 6.5 6.5 6.4 5.4 4.6 4.5 | 6.0
Daily Avg Max 2-Min | 14.3 16.0 15.8 16.1 14.7 14.2 13.6 14.0 14.6 14.3 13.8 14.2 | 14.6
Daily Avg Peak Gust | 17.2 19.2 19.1 19.5 17.8 17.3 16.8 17.0 17.5 17.2 16.6 17.0 | 17.7
| |
Maximum Daily Avg | 14.7 16.0 18.0 15.4 12.9 11.7 9.6 10.1 11.6 13.1 16.5 15.0 | 18.0
| |
Maximum 2-Minute Avg| 31 38 38 32 26 23 21 23 22 30 55 46 | 55
| |
Date of Max 2min-Day| 11 23 05 03 12 25 24 26 02 20 14 29 |
-Year| 2001 1998 2000 1999 1998 2000 2006 2007 2003 2004 2006 2004 |
| |
Maximum Peak Gust | 44 46 45 37 32 25 23 29 25 39 59 58 | 59
| |
Date of Max Gust-Day| 27 13 05 03 12 13 24 26 02 20 14 29 |
-Year| 2008 2001 2000 1999 1998 1997 1997 2007 2003 2004 2006 2004 |
| |
Avg Number of Days: | |
Peak Gust >=30 | 1.1 2.2 1.3 1.1 0.2 0.0 0.0 0.0 0.0 0.5 0.5 1.8 | 8.6
Peak Gust >=40 | 0.1 0.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.2 | 0.7
Peak Gust >=50 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 | 0.2
| |
Max 2-Minute >=30| 0.3 0.3 0.3 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.0 | 1.5
Max 2-Minute >=40| 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 | 0.1
| |
------------------------------------------------------------------------------------------------------
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.