TSWO: Historical Precipitation
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Historical Climate Data: Precipitation



Period of Record: 2000-Present

Annual/seasonal values may differ from the sum of the monthly values due to rounding.

Precipitation Summary (in.)

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Winter
Dec-Feb 		Spring
Mar-May 		Summer
Jun-Aug 		Autumn
Sep-Nov
                                   
2000 - - - - - - 1.75 2.92 4.75 0.16 7.69 4.61 - - - - 12.60
2001 4.39 8.82 2.86 2.81 6.33 3.29 5.28 4.83 2.91 6.39 6.28 5.21 59.40 17.82 12.00 13.40 15.58
2002 7.35 2.07 9.30 2.31 2.97 2.72 4.00 2.75 7.51 6.42 4.54 5.85 57.79 14.63 14.58 9.47 18.47
2003 1.86 12.13 2.58 3.56 9.26 8.07 4.86 2.69 9.84 1.82 6.02 3.53 66.22 19.84 15.40 15.62 17.68
2004 3.42 7.36 6.01 2.92 5.61 5.83 2.43 4.49 4.94 6.76 8.98 7.23 65.98 14.31 14.54 12.75 20.68
                                   
2005 5.27 4.71 5.27 5.65 0.66 5.95 5.15 4.86 2.14 0.12 3.16 2.98 45.92 17.21 11.58 15.96 5.42
2006 7.41 3.47 4.92 7.00 5.40 1.98 3.90 4.85 1.98 3.48 4.38 4.24 53.01 13.86 17.32 10.73 9.84
2007 3.86 2.32 2.83 3.41 1.11 2.89 4.20 2.07 3.53 5.60 3.42 5.10 40.34 10.42 7.35 9.16 12.55
2008 4.49 3.08 4.83 5.76 5.55 2.62 5.56 2.26 1.08 6.36 2.26 7.34 51.19 12.67 16.14 10.44 9.70
2009 3.87 2.16 5.07 4.53 10.64 2.10 6.04 2.46 7.79 7.71 1.06 4.76 58.19 13.37 20.24 10.60 16.56
                                   
2010 5.16 3.59 5.19 3.22 15.68 1.61 4.58 3.83           13.51 24.09 10.02  
                                   
Average 4.71 4.97 4.89 4.12 6.32 3.71 4.34 3.46 4.65 4.48 4.78 5.09 55.50 14.76 15.32 11.50 13.91


Precipitation Extremes

Month High (in) Year Low (in) Year 1-Day Max (in) Date
Jan 7.41 2006 1.86 2003 2.00 01-22-2006
Feb 12.13 2003 2.07 2002 4.83 02-05-2004
Mar 9.30 2002 2.58 2003 2.71 03-17-2002
Apr 7.00 2006 2.31 2002 2.38 04-21-2006
May 15.68 2010 0.66 2005 8.53 05-01-2010
Jun 8.07 2003 1.61 2010 3.61 06-06-2003
Jul 6.04 2009 1.75 2000 2.29 07-09-2008
Aug 4.86 2005 2.07 2007 1.94 08-28-2006
Sep 9.84 2003 1.08 2008 4.41 09-22-2003
Oct 7.71 2009 0.12 2005 3.31 10-08-2008
Nov 8.98 2004 1.06 2009 4.02 11-29-2001
Dec 7.34 2008 2.98 2005 2.55 12-16-2000
       
Year (Jan-Dec) 66.22 2003 40.34 2007 8.53 05-01-2010
Winter (Dec-Feb) 19.84 2002-03 10.42 2006-07 4.83 02-05-2004
Spring (Mar-May) 24.09 2010 7.35 2007 8.53 05-01-2010
Summer (Jun-Jul) 15.96 2005 9.16 2007 3.61 06-06-2003
Autumn (Sep-Nov) 20.68 2004 5.42 2005 4.41 09-22-2003


Top Ten

Rank 1-Day Max (in) Date Wettest Month (in) Date Driest Month (in) Date
1 8.53 05-01-2010 15.68 05-2010 0.12 10-2005
2 5.06 05-02-2010 12.13 02-2003 0.16 10-2000
3 4.83 02-05-2004 10.64 05-2009 0.66 04-2005
4 4.67 05-01-2009 9.84 09-2003 1.06 11-2009
5 4.41 09-22-2003 9.30 03-2002 1.08 09-2008
6 4.02 11-29-2001 9.26 05-2003 1.11 05-2007
7 3.61 06-06-2003 8.98 11-2004 1.61 06-2010
8 3.53 11-30-2003 8.82 02-2001 1.82 10-2003
9 3.48 10-08-2000 8.07 02-2001 1.75 07-2000
10 3.16 02-15-2003 7.79 06-2003 1.86 06-2006
Year (Jan-Dec) 8.53 05-01-2003 15.68 05-2010 0.12 10-2005
Winter (Dec-Feb) 4.83 02-05-2004 12.13 02-2003 1.86 01-2003
Spring (Mar-May) 8.53 05-01-2003 15.68 05-2010 0.66 05-2005
Summer (Jun-Aug) 3.61 06-06-2003 8.07 06-2003 1.06 07-2000
Autumn (Sep-Nov) 4.41 09-22-2003 9.84 09-2003 0.12 10-2005


Precipitation Threshold Climatology

Month Average
Number of Days
With ≥ 0.01"		 Average
Number of Days
With ≥ 0.10"		 Average
Number of Days
With ≥ 0.50"		 Average
Number of Days
With ≥ 1.00"
Jan 11 7 4 1
Feb 11 7 3 1
Mar 10 7 4 2
Apr 11 7 3 1
May 12 8 4 1
Jun 10 7 3 1
Jul 10 7 3 1
Aug 10 7 3 1
Sep 8 6 3 2
Oct 9 6 3 2
Nov 9 6 3 2
Dec 11 8 4 1
       
Year (Jan-Dec) 121 82 39 15
Winter (Dec-Feb) 33 22 11 3
Spring (Mar-May) 33 22 10 4
Summer (Jun-Aug) 30 20 9 2
Autumn (Sep-Nov) 26 18 9 5



Snowfall Summary (in.)

Season
Jul-Jun 		Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season
Jul-Jun
                           
2000-01 0.0 0.0 0.0 0.0 0.0 2.6 2.8 T T 0.0 0.0 0.0 5.4
2001-02 0.0 0.0 0.0 0.0 0.0 0.0 T 1.1 T 0.0 0.0 0.0 1.1
2002-03 0.0 0.0 0.0 0.0 0.0 T 4.8 5.1 T T 0.0 0.0 9.9
2003-04 0.0 0.0 0.0 0.0 T 0.1 0.1 4.4 0.0 T 0.0 0.0 4.6
2004-05 0.0 0.0 0.0 0.0 0.0 0.1 T T 0.3 0.0 0.0 0.0 0.4
                           
2005-06 0.0 0.0 0.0 0.0 0.0 T 0.5 2.2 0.0 0.0 0.0 0.0 2.7
2006-07 0.0 0.0 0.0 T 0.0 T T 1.8 0.0 T 0.0 0.0 1.8
2007-08 0.0 0.0 0.0 0.0 0.0 T 1.2 0.4 3.6 0.0 0.0 0.0 5.2
2008-09 0.0 0.0 0.0 0.0 T 1.0 T 0.2 0.6 T 0.0 0.0 1.8
2009-10 0.0 0.0 0.0 0.0 0.0 T 2.8 2.7 T 0.0 0.0 0.0 4.5
                           
2010-11 0.0 0.0                      
                           
Average 0.0 0.0 0.0 0.0 0.0 0.8 2.0 2.2 0.8 0.0 0.0 0.0 5.8


Snowfall Extremes

Month High (in) Year 1-Day Max (in) Date
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct T 2006 T 10-12-2006
Nov T 2003 T 11-20-2008
Dec 2.6 2000 1.2 12-29-2000
Jan 4.8 2003 4.1 01-16-2003
Feb 5.1 2003 3.8 02-15-2003
Mar 3.6 2008 1.9 03-08-2008
Apr T 2009+ T 04-21-2006+
May 0.0 - - -
Jun 0.0 - - -
       
Season (Jul-Jun) 9.9 2002-2003 4.1 01-16-2003


Snowfall Threshold Climatology

Month Average
Number of Days
With ≥ 0.1"		 Average
Number of Days
With ≥ 1.0"
Jul 0 0
Aug 0 0
Sep 0 0
Oct 0 0
Nov 0 0
Dec 1 *
Jan 1 1
Feb 2 1
Mar 1 *
Apr 0 0
May 0 0
Jun 0 0
     
Season (Jul-Jun) 5 2


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