Precipitation annual maximum series (inches) Station ID: 79-0014 Station name: LEWISTOWN 42 WSW State: MT Latitude (decimal degrees): 46.8847 Longitude (decimal degrees): -110.2894 Elevation (feet): 5070 Duration: 1 day 05/11/1963 1.10 06/08/1964 2.90 06/17/1965 1.17 07/19/1966 0.85 05/30/1967 1.21 06/09/1968 1.70 06/26/1969 1.42 04/28/1970 1.20 08/30/1971 1.10 07/19/1972 1.20 09/01/1973 1.00 08/20/1974 1.60 06/08/1975 1.35 06/22/1976 1.20 08/30/1977 0.73 05/18/1978 1.55 06/19/1979 3.48 05/25/1980 1.65 05/22/1981 1.31 09/27/1982 1.10 07/10/1983 1.35 06/11/1984 0.91 09/07/1985 1.55 10/07/1985 1.20 03/28/2009 0.89 07/21/2010 1.60 05/19/2011 1.74 01/18/2012 0.60 06/02/2013 0.95 08/22/2014 2.39 05/23/2015 0.97 09/04/2016 1.31 05/17/2017 2.25 06/18/2018 1.09 05/26/2019 1.45 06/28/2020 1.37 08/18/2021 0.79 09/30/2022 1.18 06/02/2023 1.21 Duration: 2 days 05/11/1963 1.21 06/07/1964 3.58 06/16/1965 2.27 07/19/1966 0.94 05/29/1967 1.66 06/09/1968 1.88 06/25/1969 2.20 07/27/1970 1.45 08/30/1971 1.21 07/19/1972 1.40 06/14/1973 1.64 08/20/1974 1.77 06/18/1975 2.50 04/26/1976 1.35 07/05/1977 0.81 05/17/1978 1.75 06/19/1979 3.84 05/24/1980 1.90 05/21/1981 1.87 09/27/1982 1.28 07/09/1983 1.50 08/03/1984 1.00 08/02/1985 2.22 08/12/1986 1.36 10/10/2008 1.18 08/28/2010 1.78 05/19/2011 2.13 04/05/2012 0.89 11/08/2012 1.16 08/22/2014 3.20 05/15/2015 1.50 09/03/2016 1.83 05/16/2017 2.54 06/17/2018 1.68 05/25/2019 2.12 06/27/2020 1.78 08/18/2021 1.42 09/30/2022 1.99 06/01/2023 1.65 Duration: 3 days 05/09/1963 1.58 06/07/1964 4.07 06/15/1965 2.90 07/19/1966 1.05 05/29/1967 1.76 05/22/1968 2.12 06/25/1969 2.80 05/07/1970 2.00 08/30/1971 1.24 07/19/1972 1.59 08/31/1973 1.70 08/20/1974 1.80 06/17/1975 2.75 04/25/1976 1.57 08/04/1977 0.99 05/17/1978 1.80 06/17/1979 4.30 05/23/1980 2.45 05/20/1981 2.24 05/27/1982 1.70 07/09/1983 1.53 08/02/1984 1.11 08/02/1985 2.26 08/30/1986 1.41 10/09/2008 1.65 08/27/2010 1.84 06/06/2011 2.93 01/17/2012 0.91 11/08/2012 1.24 08/21/2014 3.77 05/14/2015 1.63 09/03/2016 1.87 05/15/2017 2.63 06/16/2018 2.32 05/25/2019 2.33 06/27/2020 1.84 08/18/2021 1.45 09/30/2022 2.14 06/01/2023 1.89 Duration: 4 days 05/09/1963 1.65 06/06/1964 4.27 06/15/1965 2.93 05/10/1966 1.21 05/29/1967 1.78 05/22/1968 2.22 06/25/1969 2.91 05/07/1970 2.06 08/30/1971 1.25 07/19/1972 1.61 06/14/1973 2.02 05/19/1974 1.82 06/17/1975 2.87 04/25/1976 1.77 08/27/1977 1.13 05/17/1978 1.82 06/16/1979 4.55 05/23/1980 2.57 05/20/1981 2.36 05/26/1982 2.05 07/07/1983 1.70 08/02/1984 1.12 08/02/1985 2.50 06/03/1986 1.86 10/09/2008 1.67 08/27/2010 1.87 05/20/2011 3.03 01/16/2012 0.93 05/31/2013 1.30 08/20/2014 3.97 06/01/2015 1.93 09/03/2016 1.91 05/16/2017 2.80 06/16/2018 2.67 05/25/2019 2.35 06/27/2020 1.92 08/18/2021 1.58 09/29/2022 2.28 06/02/2023 2.40 Duration: 7 days 05/15/1962 3.45 05/09/1963 1.76 06/03/1964 4.50 06/13/1965 3.49 05/10/1966 1.22 05/29/1967 2.31 06/03/1968 2.82 06/24/1969 2.99 05/07/1970 3.08 08/30/1971 1.26 07/17/1972 1.66 06/14/1973 2.04 08/14/1974 2.90 06/14/1975 3.07 08/01/1976 1.88 06/10/1977 1.72 05/18/1978 2.69 06/16/1979 4.82 05/23/1980 2.76 05/16/1981 3.79 05/26/1982 2.60 07/09/1983 1.85 06/11/1984 1.14 09/06/1985 3.03 06/03/1986 2.47 07/02/2009 2.25 05/26/2010 2.51 05/19/2011 4.44 04/05/2012 1.25 05/28/2013 1.54 08/20/2014 4.01 05/30/2015 2.11 09/03/2016 1.93 05/13/2017 2.94 06/14/2018 2.87 05/25/2019 3.00 06/24/2020 2.32 08/18/2021 1.60 09/29/2022 2.30 05/31/2023 2.99 Duration: 10 days 05/13/1962 4.46 06/01/1963 2.29 06/07/1964 4.72 06/13/1965 3.56 06/29/1966 1.28 05/29/1967 2.74 06/04/1968 3.29 06/19/1969 3.27 05/07/1970 3.14 08/23/1971 1.29 08/14/1972 2.27 08/31/1973 2.51 08/11/1974 3.26 06/17/1975 3.43 06/13/1976 2.23 06/08/1977 2.13 05/17/1978 2.89 06/16/1979 4.92 05/17/1980 3.25 05/16/1981 4.01 05/26/1982 2.65 07/07/1983 2.05 06/11/1984 1.26 08/02/1985 3.19 06/03/1986 2.52 07/02/2009 2.32 05/24/2010 3.00 05/20/2011 4.74 04/05/2012 1.44 05/24/2013 1.71 08/15/2014 5.06 05/15/2015 2.82 09/03/2016 1.99 05/11/2017 3.06 06/14/2018 2.96 05/17/2019 3.15 06/24/2020 2.41 08/18/2021 1.76 09/29/2022 2.35 05/27/2023 3.69 Duration: 20 days 05/11/1962 6.42 06/02/1963 3.12 05/22/1964 6.77 06/13/1965 4.47 05/10/1966 1.89 05/29/1967 4.88 05/22/1968 5.84 06/19/1969 4.19 04/27/1970 4.58 05/17/1971 1.89 07/17/1972 3.08 08/24/1973 3.38 08/07/1974 4.58 06/08/1975 5.38 06/04/1976 3.14 08/22/1977 2.66 05/05/1978 4.38 06/16/1979 5.70 05/23/1980 4.64 05/05/1981 7.55 05/26/1982 4.82 06/28/1983 3.16 08/02/1984 1.46 08/02/1985 3.84 08/30/1986 3.10 06/15/2009 2.83 05/22/2010 3.71 05/19/2011 7.33 05/17/2012 1.75 05/16/2013 3.32 08/04/2014 6.82 05/16/2015 4.97 09/04/2016 2.97 05/01/2017 3.55 06/14/2018 4.08 05/15/2019 4.55 06/14/2020 3.35 05/07/2021 2.44 09/14/2022 2.67 05/21/2023 4.89 Duration: 30 days 05/13/1962 7.49 05/25/1963 3.63 05/22/1964 7.73 06/13/1965 5.51 05/10/1966 2.83 05/29/1967 5.46 05/13/1968 6.79 06/19/1969 4.69 04/28/1970 5.36 05/05/1971 2.91 07/17/1972 4.28 08/24/1973 3.77 07/30/1974 5.08 05/31/1975 6.21 05/28/1976 3.69 08/26/1977 3.67 05/02/1978 5.09 05/24/1979 6.50 05/10/1980 5.77 04/25/1981 8.85 05/19/1982 6.24 06/11/1983 4.65 08/02/1984 2.28 09/06/1985 4.08 06/03/1986 3.57 06/09/2009 3.84 05/22/2010 5.83 05/19/2011 9.44 03/17/2012 2.51 05/16/2013 4.64 08/02/2014 7.11 05/08/2015 5.92 08/06/2016 4.05 05/15/2017 5.19 06/04/2018 4.28 05/16/2019 4.97 06/06/2020 4.26 04/22/2021 2.75 07/01/2022 3.11 05/27/2023 5.84 Duration: 45 days 05/11/1962 9.42 05/09/1963 5.11 05/01/1964 9.49 05/14/1965 6.09 05/10/1966 3.71 05/09/1967 6.47 05/12/1968 8.05 05/15/1969 4.92 04/12/1970 6.18 04/17/1971 3.74 07/17/1972 5.35 08/24/1973 4.21 07/07/1974 6.40 05/06/1975 7.89 05/31/1976 4.29 08/04/1977 5.07 05/17/1978 5.44 05/27/1979 7.58 05/10/1980 7.18 04/25/1981 9.87 05/09/1982 7.10 06/03/1983 5.74 08/02/1985 6.99 06/03/1986 5.67 07/02/2009 4.95 05/20/2010 6.44 05/07/2011 11.86 03/17/2012 3.31 05/16/2013 5.81 07/15/2014 8.04 04/22/2015 6.97 07/25/2016 4.69 04/30/2017 5.90 05/06/2018 6.72 05/25/2019 6.75 05/18/2020 5.28 04/12/2021 3.74 07/02/2022 3.86 05/17/2023 7.30 Duration: 60 days 05/11/1962 10.28 05/03/1963 5.56 04/24/1964 10.29 05/14/1965 7.37 05/10/1966 4.99 04/25/1967 7.81 05/05/1968 8.79 05/20/1969 5.87 04/14/1970 7.62 05/05/1971 4.33 06/07/1972 5.42 07/21/1973 4.96 07/02/1974 6.89 04/25/1975 10.10 04/25/1976 6.60 08/04/1977 6.43 05/18/1978 7.31 05/11/1979 8.01 05/10/1980 8.08 04/25/1981 11.18 05/26/1982 8.91 05/19/1983 5.87 08/02/1984 3.56 08/02/1985 7.94 05/22/1986 6.36 06/15/2009 5.99 05/24/2010 8.58 04/17/2011 13.55 04/05/2012 3.87 04/24/2013 6.51 07/31/2014 9.62 04/14/2015 7.24 08/06/2016 6.34 04/19/2017 7.25 05/06/2018 8.02 05/15/2019 8.24 05/06/2020 6.40 03/29/2021 4.09 04/10/2022 4.60 05/03/2023 8.74