Precipitation annual maximum series (inches) Station ID: 87-1103 Station name: HELENA VALLEY MONTANA WEATHER State: MT Latitude (decimal degrees): 46.6756 Longitude (decimal degrees): -111.9892 Elevation (feet): 3673 Duration: 1 hour 06/22/1996 0.28 09/15/1997 0.45 06/25/1998 1.04 08/11/1999 0.76 08/04/2000 0.38 08/04/2001 0.73 07/23/2002 0.49 08/22/2003 0.50 08/23/2004 0.23 06/27/2005 0.70 05/21/2006 0.39 05/21/2007 0.52 07/02/2008 0.28 06/15/2009 0.71 08/11/2010 0.45 07/13/2011 0.38 07/27/2012 0.19 08/09/2013 0.31 08/20/2014 0.35 04/22/2015 0.31 06/08/2016 0.35 06/12/2017 0.34 05/09/2018 0.30 09/06/2019 0.54 06/06/2020 0.42 08/02/2021 0.31 Duration: 2 hours 06/22/1996 0.37 09/15/1997 0.48 06/25/1998 1.12 08/11/1999 1.01 08/04/2000 0.41 08/04/2001 0.82 07/23/2002 0.53 08/22/2003 0.54 08/23/2004 0.35 06/27/2005 0.75 05/21/2006 0.42 05/21/2007 0.85 07/02/2008 0.35 06/15/2009 0.76 08/11/2010 0.48 06/07/2011 0.41 07/27/2012 0.24 07/17/2013 0.37 08/20/2014 0.38 04/22/2015 0.37 06/08/2016 0.38 06/12/2017 0.47 05/09/2018 0.34 09/06/2019 0.68 06/06/2020 0.49 08/02/2021 0.33 Duration: 3 hours 06/22/1996 0.38 09/15/1997 0.49 06/25/1998 1.14 08/11/1999 1.23 08/04/2000 0.42 08/04/2001 0.91 07/23/2002 0.54 08/22/2003 0.55 08/23/2004 0.44 06/27/2005 0.77 05/21/2006 0.43 05/21/2007 1.17 07/02/2008 0.36 06/15/2009 0.78 08/10/2010 0.55 06/07/2011 0.62 07/27/2012 0.24 08/01/2013 0.45 08/23/2014 0.42 04/22/2015 0.38 05/26/2016 0.43 06/12/2017 0.48 05/31/2018 0.35 09/08/2019 0.89 06/06/2020 0.53 08/02/2021 0.34 Duration: 6 hours 06/22/1996 0.41 06/05/1997 0.59 06/25/1998 1.21 08/11/1999 1.48 05/30/2000 0.43 08/04/2001 1.06 06/10/2002 0.57 08/22/2003 0.56 08/23/2004 0.73 06/01/2005 1.09 04/05/2006 0.43 05/21/2007 1.60 06/04/2008 0.54 06/15/2009 0.79 06/16/2010 0.60 06/07/2011 0.89 08/31/2012 0.34 05/22/2013 0.60 06/02/2014 0.62 11/27/2014 0.44 07/19/2016 0.53 06/12/2017 0.48 05/31/2018 0.60 09/08/2019 1.19 05/19/2020 0.64 08/17/2021 0.40 Duration: 12 hours 06/22/1996 0.42 06/30/1997 0.89 06/25/1998 1.21 08/11/1999 1.54 05/30/2000 0.59 06/03/2001 1.42 06/10/2002 0.76 08/22/2003 0.69 08/22/2004 1.06 06/01/2005 1.48 06/10/2006 0.61 05/21/2007 1.76 06/04/2008 0.68 06/15/2009 0.79 06/16/2010 0.78 06/07/2011 1.14 08/31/2012 0.57 08/01/2013 0.84 08/23/2014 0.76 07/27/2015 0.53 07/19/2016 0.53 06/12/2017 0.51 03/15/2018 0.73 09/08/2019 1.23 05/19/2020 0.81 08/17/2021 0.50 Duration: 1 day 05/22/1996 0.38 06/30/1997 0.97 06/25/1998 1.15 08/11/1999 1.34 05/30/2000 0.63 06/03/2001 1.33 06/09/2002 1.15 08/22/2003 0.61 08/22/2004 1.09 06/01/2005 1.35 06/09/2006 0.84 05/21/2007 1.68 05/22/2008 0.68 06/14/2009 0.65 06/16/2010 0.91 06/07/2011 1.00 08/30/2012 0.58 05/22/2013 0.76 08/22/2014 0.72 09/04/2015 0.53 04/14/2016 0.53 06/12/2017 0.61 05/31/2018 0.74 09/08/2019 1.09 06/28/2020 0.85 08/17/2021 0.56 Duration: 2 days 06/20/1996 0.48 06/05/1997 1.56 06/25/1998 1.42 08/11/1999 1.50 05/29/2000 0.71 06/02/2001 1.57 06/09/2002 1.59 08/22/2003 0.67 08/22/2004 1.20 06/01/2005 1.81 06/08/2006 1.10 05/20/2007 2.08 05/22/2008 1.14 08/06/2009 0.78 06/15/2010 1.25 06/07/2011 1.59 08/30/2012 0.82 05/22/2013 0.92 08/21/2014 0.92 09/03/2015 0.95 05/25/2016 0.74 06/12/2017 0.76 05/30/2018 1.04 09/08/2019 1.28 06/27/2020 1.26 08/17/2021 0.62 Duration: 3 days 06/22/1996 0.51 06/05/1997 1.79 06/25/1998 1.45 08/11/1999 1.58 05/29/2000 0.72 06/02/2001 1.60 06/07/2002 2.17 08/20/2003 0.69 08/22/2004 1.38 06/01/2005 2.00 06/07/2006 1.69 05/20/2007 2.17 05/21/2008 1.35 08/06/2009 0.80 08/10/2010 1.51 06/07/2011 2.21 08/30/2012 0.84 05/22/2013 0.96 08/20/2014 1.28 09/03/2015 0.97 04/12/2016 1.02 06/12/2017 0.78 05/30/2018 1.06 09/06/2019 2.08 06/27/2020 1.41 05/23/2021 0.72 Duration: 4 days 06/22/1996 0.60 06/05/1997 1.85 06/22/1998 1.50 08/11/1999 1.61 05/28/2000 0.74 06/02/2001 1.62 06/07/2002 2.20 08/20/2003 0.71 08/22/2004 1.42 06/01/2005 2.02 06/07/2006 1.73 05/21/2007 2.40 05/21/2008 1.43 08/06/2009 0.81 08/10/2010 1.78 06/07/2011 2.23 08/30/2012 0.85 05/22/2013 1.19 08/20/2014 1.32 09/03/2015 0.98 04/12/2016 1.03 06/12/2017 0.79 05/30/2018 1.07 09/06/2019 2.17 06/27/2020 1.44 05/19/2021 1.00 Duration: 7 days 05/16/1996 0.80 06/05/1997 1.90 06/19/1998 2.47 05/28/1999 1.72 05/26/2000 0.75 07/12/2001 1.81 06/07/2002 2.28 08/16/2003 0.85 08/22/2004 1.48 06/01/2005 2.27 06/07/2006 1.88 05/20/2007 2.64 05/21/2008 1.50 06/15/2009 1.48 08/07/2010 1.93 06/07/2011 2.48 08/27/2012 1.09 05/22/2013 1.56 08/20/2014 1.33 05/27/2015 1.25 05/20/2016 1.40 05/16/2017 0.86 05/30/2018 1.08 09/06/2019 2.39 06/27/2020 1.52 05/19/2021 1.48 Duration: 10 days 06/17/1996 0.97 05/30/1997 2.11 06/17/1998 2.86 08/03/1999 1.84 05/26/2000 0.77 07/13/2001 2.32 06/02/2002 2.76 04/14/2003 0.97 08/18/2004 1.56 06/01/2005 2.37 06/03/2006 1.92 05/21/2007 2.97 06/03/2008 1.57 06/15/2009 1.53 08/07/2010 1.99 06/01/2011 2.63 08/28/2012 1.11 05/20/2013 1.79 08/15/2014 1.51 05/26/2015 1.58 05/20/2016 1.64 06/05/2017 0.99 06/10/2018 1.19 09/07/2019 2.44 05/12/2020 1.61 05/20/2021 1.51 Duration: 20 days 05/11/1996 1.42 05/21/1997 3.51 06/17/1998 4.25 05/30/1999 2.26 05/30/2000 1.01 07/13/2001 2.71 05/22/2002 3.32 04/15/2003 1.55 08/18/2004 1.59 06/01/2005 3.79 05/22/2006 3.34 05/21/2007 4.56 05/23/2008 2.77 06/06/2009 2.00 05/29/2010 2.37 05/23/2011 3.67 08/16/2012 1.27 05/16/2013 2.70 06/02/2014 2.08 05/16/2015 1.94 05/10/2016 2.28 05/07/2017 1.12 05/31/2018 2.29 08/23/2019 2.72 06/15/2020 2.32 05/08/2021 1.68 Duration: 30 days 06/15/1996 1.57 06/05/1997 3.73 06/07/1998 4.98 05/29/1999 2.70 07/13/2001 3.82 05/21/2002 4.02 04/14/2003 1.91 08/23/2004 2.97 06/01/2005 5.06 05/22/2006 3.87 05/21/2007 4.87 05/21/2008 3.13 06/09/2009 2.43 05/19/2010 3.42 05/21/2011 4.06 08/03/2012 1.52 05/16/2013 3.16 06/02/2014 2.39 05/06/2015 2.28 05/20/2016 2.67 05/17/2017 1.92 05/31/2018 2.78 08/11/2019 3.48 06/06/2020 3.31 07/29/2021 1.74 Duration: 45 days 05/13/1996 2.37 05/21/1997 5.33 05/22/1998 7.04 05/29/1999 3.09 05/26/2000 1.53 06/03/2001 4.30 05/19/2002 4.62 04/02/2003 2.36 08/18/2004 3.02 05/05/2005 5.81 05/22/2006 3.91 05/03/2007 5.25 05/21/2008 3.53 06/15/2009 3.00 05/19/2010 3.99 04/30/2011 4.62 07/23/2012 1.79 05/16/2013 3.70 06/02/2014 2.67 04/23/2015 2.68 05/10/2016 3.31 05/07/2017 2.22 05/07/2018 3.62 08/10/2019 4.00 05/18/2020 4.69 04/15/2021 2.14 Duration: 60 days 05/12/1996 2.95 05/23/1997 6.49 05/14/1998 7.70 06/18/1999 3.42 05/06/2000 1.63 06/03/2001 5.40 05/22/2002 5.20 04/14/2003 3.10 08/23/2004 3.38 05/05/2005 7.10 05/22/2006 4.29 04/16/2007 5.61 05/08/2008 3.84 06/09/2009 4.22 05/04/2010 4.17 05/21/2011 5.11 07/11/2012 2.39 05/20/2013 4.08 04/23/2014 2.95 04/12/2015 2.79 04/13/2016 4.05 04/18/2017 2.53 05/02/2018 4.31 08/11/2019 4.53 05/07/2020 5.07 03/29/2021 2.39