STATION:  LOGAN-CACHE AIRPORT (KLGU), UT

CLIMATOLOGICAL SUMMARY.  Period of Record: Oct 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
                    |                                                                         |
Avg Max Temp        |  31.3  34.0  48.1  59.2  69.5  80.5  92.2  88.5  76.3  62.5  46.7  33.5 |   60.2
Avg Min Temp        |  12.7  14.1  25.4  32.5  38.8  45.1  53.1  51.1  40.7  31.6  24.0  16.0 |   32.1
Avg Temperature     |  22.0  24.0  36.7  45.8  54.2  62.8  72.6  69.8  58.5  47.1  35.3  24.8 |   46.1
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    60    59    74    83    94    98   103   101    94    84    70    61 |    103
                    |                                                                         |
    Date of Ext-Day |    10    28    31    29    29    30    13    01    03    01    05    03 |
               -Year|  2001  1999  2004  2007  2003  2001  2002  2000  2001  2001  1999  1998 |
                    |                                                                         |
    Extreme Min Temp|   -31   -20   -11    15    21    28    41    36    22    11    -7   -19 |    -31
                    |                                                                         |
    Date of Ext-Day |    30    06    03    21    08    05    09    31    27    31    29    26 |
               -Year|  2002  2002  2007  2008  2002  2001  1999  2005  1999  2003  2004  2001 |
                    |                                                                         |
Heating Degree Days |  1330  1157   876   575   342   119     2    13   211   556   890  1247 |   7317
Cooling Degree Days |     0     0     0     0     6    53   238   160    15     0     0     0 |    472
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.4   5.8  21.8  14.9   1.4   0.0   0.0   0.0 |   44.3
    Max Temp >= 75  |   0.0   0.0   0.0   1.2  11.4  23.1  31.0  29.7  18.8   3.7   0.0   0.0 |  118.9
    Max Temp <= 32  |  16.2  12.0   2.3   0.0   0.0   0.0   0.0   0.0   0.0   0.2   2.9  14.0 |   47.6
                    |                                                                         |
    Min Temp <= 32  |  30.5  27.6  25.8  15.3   5.7   0.5   0.0   0.0   3.4  18.3  26.4  29.9 |  183.4
    Min Temp <= 20  |  20.8  17.1   7.2   0.7   0.0   0.0   0.0   0.0   0.0   0.7   9.2  18.8 |   74.5
    Min Temp  <= 0  |   6.6   4.6   0.7   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   2.5 |   14.6
                    |                                                                         |
Avg Dew Point Temp  |  17.7  19.0  26.5  30.8  37.6  41.9  46.1  44.7  38.1  31.7  26.1  19.6 |   31.6
Avg Wet Bulb Temp   |  20.8  22.4  32.3  39.1  46.1  51.9  57.5  55.9  47.6  39.4  31.1  22.9 |   38.9
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.27 30.20 30.07 30.00 29.95 29.93 29.90 29.91 30.01 30.08 30.19 30.26 |  30.06
(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   |   0.1   0.2   0.2   1.5   2.5   3.3   4.1   4.3   2.7   1.3   0.5   0.0 |   20.7
    Heavy Fog       |  12.9  10.6   5.4   0.9   0.3   0.2   0.0   0.2   0.8   1.7   3.8   7.6 |   44.4
    Fog             |  23.4  20.8  13.7   8.2   5.1   2.5   0.9   1.9   3.9   7.7  14.3  20.6 |  123.0
    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
                    |                                                                         |
Average Monthly     |  1.41  1.46  1.31  1.84  1.66  1.07  0.23  0.75  1.15  1.47  1.10  1.26 |  14.71
                    |                                                                         |
Maximum Daily       |  1.00  0.74  1.02  1.20  1.52  1.05  0.50  1.73  0.94  1.36  0.63  0.66 |   1.73
                    |                                                                         |
    Date of Ext-Day |    11    26    26    28    28    07    27    30    03    20    02    03 |
               -Year|  2005  2004  2003  2005  2004  2005  2007  2000  2004  2004  2008  2001 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  11.7  10.9  10.4  10.8   8.7   4.5   3.5   5.3   5.3   7.2   8.8  10.4 |   97.4
    >= 0.10         |   3.9   5.3   4.2   5.3   4.6   2.4   0.5   2.2   3.0   4.4   3.8   4.3 |   43.9
    >= 0.25         |   1.8   2.0   1.4   2.4   2.8   1.6   0.2   0.7   1.6   1.8   1.6   1.6 |   19.6
    >= 0.50         |   0.6   0.5   0.5   0.7   0.5   0.7   0.1   0.2   0.8   0.9   0.2   0.5 |    6.2
    >= 1.00         |   0.1   0.0   0.1   0.1   0.1   0.1   0.0   0.1   0.0   0.1   0.0   0.0 |    0.7
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   3.0   3.2   4.6   5.9   5.4   5.2   4.9   5.0   4.2   3.9   3.4   3.2 |    4.3
Daily Avg Max 2-Min |  12.0  13.3  16.1  20.0  18.5  18.3  17.7  18.5  15.3  14.7  13.4  12.7 |   15.9
Daily Avg Peak Gust |  14.1  15.7  19.5  25.0  22.9  22.9  22.3  23.4  19.2  17.9  16.2  15.1 |   19.5
                    |                                                                         |
Maximum Daily Avg   |  15.5  15.8  15.6  18.6  13.0  14.3  12.6  13.8  17.6  16.8  13.4  14.4 |   18.6
                    |                                                                         |
Maximum 2-Minute Avg|    41    52    43    44    39    44    44    47    39    41    49    45 |     52
                    |                                                                         |
Date of Max 2min-Day|    01    14    27    14    10    20    25    14    04    18    24    15 |
               -Year|  2004  2000  2007  2002  2004  2003  2002  2003  2007  2004  1998  2000 |
                    |                                                                         |
Maximum Peak Gust   |    55    63    54    61    49    56    53    54    54    53    61    55 |     63
                    |                                                                         |
Date of Max Gust-Day|    16    14    27    19    10    20    09    14    01    18    24    15 |
               -Year|  1999  2000  2007  2008  2004  2003  2004  2003  2000  2004  1998  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   2.4   2.1   3.7   8.1   6.8   6.2   6.9   7.2   4.3   3.8   3.2   2.6 |   57.2
   Peak Gust >=40   |   0.8   1.2   0.7   2.4   0.9   1.5   1.2   2.4   0.8   0.5   1.1   1.0 |   14.5
   Peak Gust >=50   |   0.3   0.3   0.1   0.9   0.0   0.3   0.4   0.3   0.2   0.1   0.2   0.1 |    3.3
                    |                                                                         |
   Max 2-Minute >=30|   0.9   1.6   1.4   4.0   1.5   3.1   2.5   2.9   1.3   1.4   1.3   0.0 |   22.0
   Max 2-Minute >=40|   0.3   0.2   0.2   0.9   0.0   0.4   0.4   0.3   0.0   0.1   0.3   0.0 |    3.2
                    |                                                                         |
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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.