STATION:  SALT LAKE CITY INTERNATIONAL AIRPORT (KSLC), UT

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
                    |                                                                         |
Avg Max Temp        |  38.5  42.8  53.7  61.3  72.9  83.2  94.4  91.0  78.8  64.8  50.2  38.4 |   64.2
Avg Min Temp        |  22.8  25.7  33.1  39.7  48.3  56.8  66.7  64.5  53.2  41.5  31.2  22.7 |   42.2
Avg Temperature     |  30.7  34.3  43.4  50.5  60.6  70.0  80.5  77.8  66.0  53.2  40.7  30.6 |   53.2
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    63    67    78    89    99   102   107   103    97    88    75    63 |    107
                    |                                                                         |
    Date of Ext-Day |    31    27    31    29    28    26    13    01    15    01    06    03 |
               -Year|  2003  2006  2004  2007  2003  2002  2002  2000  2000  1996  1999  1998 |
                    |                                                                         |
    Extreme Min Temp|    -5    -5    14    24    26    34    48    46    35    20     4     0 |     -5
                    |                                                                         |
    Date of Ext-Day |    30    13    06    01    08    16    02    31    28    31    29    08 |
               -Year|  2002  2004  1998  2008  2002  2003  1997  2005  1999  2002  2006  2002 |
                    |                                                                         |
Heating Degree Days |  1065   868   670   438   196    51     1     1    84   377   729  1068 |   5548
Cooling Degree Days |     0     0     0     3    61   200   482   398   115    10     0     0 |   1270
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   2.0  10.2  25.9  20.2   4.5   0.0   0.0   0.0 |   62.8
    Max Temp >= 75  |   0.0   0.0   0.3   3.2  14.9  23.2  30.8  30.7  21.1   6.0   0.1   0.0 |  130.4
    Max Temp <= 32  |   8.8   3.9   0.4   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.2   9.4 |   23.6
                    |                                                                         |
    Min Temp <= 32  |  26.9  22.9  13.9   4.3   0.3   0.0   0.0   0.0   0.0   3.0  18.6  27.7 |  117.7
    Min Temp <= 20  |  11.9   6.9   1.4   0.0   0.0   0.0   0.0   0.0   0.0   0.1   2.1  12.5 |   34.9
    Min Temp  <= 0  |   0.2   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1 |    0.5
                    |                                                                         |
Avg Dew Point Temp  |  22.9  24.9  27.9  31.8  36.1  39.7  44.8  44.6  39.6  34.0  28.4  22.9 |   33.1
Avg Wet Bulb Temp   |  27.5  30.5  36.6  41.9  48.4  54.0  60.2  58.7  51.9  43.6  35.0  27.6 |   43.0
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.20 30.13 30.04 29.99 29.93 29.89 29.85 29.87 29.95 30.04 30.14 30.22 |  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|                                                                         |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Thunderstorms   |   0.0   0.3   0.2   2.1   2.7   4.0   3.8   5.4   3.1   1.5   0.5   0.1 |   23.7
    Heavy Fog       |   4.9   2.6   1.4   0.6   0.0   0.0   0.0   0.0   0.0   0.0   1.3   3.7 |   14.5
    Fog             |  19.2  14.7   8.8   7.5   3.9   2.0   0.3   0.8   1.9   3.6  10.9  16.4 |   90.0
    Hail            |   0.0   0.1   0.8   1.0   0.2   0.2   0.2   0.2   0.4   0.2   0.5   0.5 |    4.3
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  1.14  1.38  1.55  2.02  1.29  1.11  0.49  0.60  1.08  1.30  1.25  1.25 |  14.45
                    |                                                                         |
Maximum Daily       |  0.54  0.73  0.93  1.05  1.04  1.48  0.91  1.31  1.00  1.14  1.27  1.04 |   1.48
                    |                                                                         |
    Date of Ext-Day |    02    28    27    06    24    17    25    30    22    20    22    07 |
               -Year|  1997  2004  1998  2006  1997  1998  1998  2000  2000  2004  2001  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   9.8   9.6   9.0  10.2   7.2   4.8   3.3   4.6   5.5   6.5   8.3   9.7 |   88.6
    >= 0.10         |   4.1   4.6   4.6   5.7   3.9   2.8   1.3   1.5   2.8   4.6   3.8   4.1 |   43.7
    >= 0.25         |   1.5   2.3   2.2   2.9   1.7   1.8   0.7   0.8   1.6   2.0   1.8   1.4 |   20.7
    >= 0.50         |   0.1   0.2   0.6   1.2   0.4   0.7   0.2   0.2   0.6   0.5   0.3   0.3 |    5.2
    >= 1.00         |   0.0   0.0   0.0   0.1   0.1   0.1   0.0   0.1   0.1   0.1   0.1   0.1 |    0.6
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   6.8   7.4   8.6   9.6   9.0   9.1   9.1   9.4   8.5   7.9   7.0   7.1 |    8.3
Daily Avg Max 2-Min |  16.1  17.2  19.3  21.7  20.7  21.0  20.7  20.5  18.6  17.0  16.0  16.3 |   18.8
Daily Avg Peak Gust |  19.1  20.4  23.1  26.5  25.6  26.3  25.9  25.8  23.0  20.7  19.3  19.3 |   22.9
                    |                                                                         |
Maximum Daily Avg   |  24.1  26.5  19.4  23.9  20.6  20.4  19.4  20.1  21.9  19.0  22.0  23.4 |   26.5
                    |                                                                         |
Maximum 2-Minute Avg|    44    47    45    53    63    51    48    43    47    37    40    43 |     63
                    |                                                                         |
Date of Max 2min-Day|    28    09    08    15    19    01    27    21    04    11    24    19 |
               -Year|  2008  1999  2002  2002  2006  2002  2008  2001  2007  2001  1998  2008 |
                    |                                                                         |
Maximum Peak Gust   |    53    62    51    64    75    60    56    56    58    45    55    49 |     75
                    |                                                                         |
Date of Max Gust-Day|    28    09    08    15    19    01    27    07    04    18    29    19 |
               -Year|  2008  1999  2002  2002  2006  2002  2008  2006  2007  2004  2000  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   4.6   4.3   7.2   9.8   8.8   9.4   9.8  10.2   6.9   4.8   4.6   5.3 |   85.6
   Peak Gust >=40   |   1.3   1.4   0.8   2.9   2.3   2.9   3.0   2.3   1.6   1.1   0.9   1.9 |   22.4
   Peak Gust >=50   |   0.3   0.3   0.2   0.2   0.6   0.7   0.5   0.3   0.2   0.0   0.3   0.0 |    3.6
                    |                                                                         |
   Max 2-Minute >=30|   2.2   2.3   2.6   4.6   4.0   4.3   4.1   3.9   3.0   2.0   2.4   0.0 |   35.4
   Max 2-Minute >=40|   0.4   0.3   0.3   0.5   0.5   0.6   0.6   0.5   0.2   0.0   0.2   0.0 |    4.2
                    |                                                                         |
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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.