STATION: GRAND JUNCTION-WALKER FIELD AIRPORT (KGJT), CO
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
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Avg Max Temp | 39.6 45.7 57.4 65.6 77.8 88.6 95.1 90.2 80.0 66.6 51.2 38.7 | 66.4
Avg Min Temp | 19.7 24.3 30.9 38.3 47.3 56.3 64.5 61.7 52.0 40.1 28.0 18.8 | 40.2
Avg Temperature | 29.6 35.0 44.2 51.9 62.5 72.5 79.8 76.0 66.0 53.3 39.6 28.8 | 53.3
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Extremes: | |
Extreme Max Temp| 57 65 81 86 101 103 106 103 95 88 76 61 | 106
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Date of Ext-Day | 17 28 20 27 29 30 21 02 04 01 02 01 |
-Year| 2000 2006 2004 2000 2000 2002 2005 2000 1998 2003 2008 1999 |
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Extreme Min Temp| -8 3 6 16 26 37 51 48 31 20 -4 -12 | -12
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Date of Ext-Day | 15 12 02 12 09 14 02 27 27 22 30 22 |
-Year| 2007 2004 2002 1997 2002 2001 1997 2006 1996 1996 2004 1998 |
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Heating Degree Days | 1096 849 645 394 146 23 0 0 71 367 763 1124 | 5476
Cooling Degree Days | 0 0 0 1 69 246 458 340 100 6 0 0 | 1220
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 2.8 16.7 26.6 18.9 3.1 0.0 0.0 0.0 | 68.1
Max Temp >= 75 | 0.0 0.0 0.8 6.8 20.1 27.7 31.0 30.7 23.2 6.6 0.1 0.0 | 146.9
Max Temp <= 32 | 6.1 1.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 7.1 | 15.6
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Min Temp <= 32 | 29.8 24.3 19.0 6.5 0.8 0.0 0.0 0.0 0.2 4.8 22.7 30.5 | 138.5
Min Temp <= 20 | 16.6 8.2 2.1 0.3 0.0 0.0 0.0 0.0 0.0 0.1 4.2 17.6 | 49.1
Min Temp <= 0 | 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.9 | 1.7
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Avg Dew Point Temp | 20.3 21.4 23.2 25.7 30.0 32.4 43.1 45.2 38.7 30.8 24.3 18.9 | 29.5
Avg Wet Bulb Temp | 26.0 29.6 35.4 40.6 47.2 52.3 59.0 58.5 51.6 42.7 33.1 25.1 | 41.7
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Avg Sea Level Pres | 30.20 30.12 30.03 29.97 29.93 29.88 29.86 29.90 29.94 30.02 30.14 30.21 | 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 | 0.1 0.2 0.8 1.0 2.7 3.8 6.3 7.6 5.0 1.9 0.2 0.1 | 29.8
Heavy Fog | 2.2 1.1 0.8 0.2 0.1 0.0 0.0 0.0 0.2 0.3 1.4 1.7 | 7.8
Fog | 9.2 6.9 5.2 4.2 1.9 1.4 1.2 2.0 3.9 4.7 5.1 7.3 | 53.0
Hail | 0.0 0.2 0.2 0.2 0.1 0.2 0.1 0.2 0.2 0.2 0.1 0.0 | 1.5
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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 | 0.58 0.52 0.67 0.96 0.61 0.41 0.51 1.04 1.44 1.04 0.70 0.50 | 8.97
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Maximum Daily | 0.49 0.30 0.49 0.75 0.83 0.50 0.63 1.31 1.09 0.78 0.72 0.60 | 1.31
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Date of Ext-Day | 26 17 20 04 25 12 14 05 23 06 27 07 |
-Year| 2000 2000 2000 1997 1997 2007 2001 1997 2007 2006 2008 2007 |
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Avg Number of Days: | |
>= 0.01 | 5.9 6.8 5.9 7.2 4.6 3.2 4.2 6.2 7.3 6.8 5.4 5.0 | 68.4
>= 0.10 | 2.1 2.2 2.5 2.8 2.2 1.8 1.6 2.8 4.9 3.6 2.4 1.4 | 30.1
>= 0.25 | 0.5 0.3 0.6 1.8 0.5 0.6 0.8 1.5 1.9 1.5 1.0 0.7 | 11.6
>= 0.50 | 0.0 0.0 0.0 0.2 0.2 0.1 0.2 0.4 0.5 0.2 0.1 0.1 | 2.0
>= 1.00 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.1 0.0 0.0 0.0 | 0.2
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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| 5.1 6.3 7.5 9.0 8.9 9.3 9.1 8.6 8.2 7.4 5.6 5.1 | 7.5
Daily Avg Max 2-Min | 14.8 17.6 20.2 23.3 23.2 23.8 23.5 22.1 20.2 19.3 15.8 14.8 | 19.9
Daily Avg Peak Gust | 16.8 20.5 23.9 28.6 28.5 29.4 28.4 26.5 24.0 22.7 18.4 17.0 | 23.7
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Maximum Daily Avg | 15.0 17.5 18.1 23.4 21.9 21.2 16.2 16.3 19.9 18.3 16.9 14.1 | 23.4
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Maximum 2-Minute Avg| 40 41 53 49 46 48 45 45 44 51 45 44 | 53
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Date of Max 2min-Day| 11 24 14 18 21 17 14 08 29 25 14 01 |
-Year| 2005 1998 2001 2000 2008 1999 2002 1999 2007 2006 2005 2007 |
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Maximum Peak Gust | 49 55 60 63 68 55 68 64 55 62 55 54 | 68
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Date of Max Gust-Day| 11 24 14 18 28 17 14 11 22 25 14 01 |
-Year| 2005 1998 2001 2007 2004 1999 2002 1999 1996 2006 2005 2007 |
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Avg Number of Days: | |
Peak Gust >=30 | 1.3 3.4 7.0 12.2 12.3 13.8 12.3 9.5 7.0 6.2 2.3 1.5 | 88.6
Peak Gust >=40 | 0.4 0.8 1.8 3.4 3.6 3.7 4.1 2.3 1.8 2.2 0.6 0.4 | 25.0
Peak Gust >=50 | 0.0 0.1 0.2 0.8 0.6 0.7 0.3 0.4 0.2 0.4 0.2 0.1 | 3.9
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Max 2-Minute >=30| 0.4 1.4 3.8 5.3 5.8 5.6 6.6 4.5 3.4 3.4 0.9 0.0 | 41.2
Max 2-Minute >=40| 0.1 0.2 0.4 0.7 0.6 0.5 0.4 0.3 0.2 0.8 0.2 0.0 | 4.3
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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.