When to plant in Laurium, MI
Planting dates worked out from Laurium's own frost records, not a generic zone chart.
Safe to plant out
Jun 3
1 year in 10 has a later frost
Average last frost
May 17
about a 50% chance of a later one
Average first fall frost
Sep 30
1 year in 10 by Sep 16
Frost-free days
138
median, 1991–2020
Station used: Hancock Houghton Co Ap · 8.5 km away · station 324 m, town 373 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Apr 8 – Apr 22 | Jun 3 – Jun 17 | Jul 28 |
| Sweet pepper | Mar 25 – Apr 8 | Jun 3 – Jun 17 | Aug 2 |
| Lettuce (leaf) | Mar 24 – Mar 31 | Apr 28 – May 12 | Jun 7 |
| Peas | — | Apr 28 – May 26 | Jun 22 |
| Bush beans | — | May 27 – Jun 17 | Jul 16 |
| Carrot | — | May 7 – Jun 18 | Jul 6 |
| Beet | — | May 7 – Jun 18 | Jun 26 |
| Potato | — | May 7 – May 28 | Jul 16 |
| Kale | Mar 24 – Apr 7 | May 5 – May 19 | Jun 17 |
| Broccoli | Mar 17 – Mar 31 | Apr 28 – May 19 | Jun 27 |
| Cucumber | May 6 – May 13 | Jun 3 – Jun 17 | Jul 23 |
| Summer squash and zucchini | May 6 – May 13 | Jun 3 – Jun 17 | Jul 18 |
| Winter squash | May 6 – May 13 | Jun 3 – Jun 17 | Aug 22 |
| Sweet corn | — | May 27 – Jun 17 | Jul 26 |
| Onion (from sets) | — | Apr 28 – May 19 | Jul 27 |
| Garlic | — | Sep 16 – Oct 14 (fall) | following summer |
| Spinach | — | Apr 28 – May 26 | Jun 5 |
| Basil | Apr 22 – May 6 | Jun 3 – Jun 17 | Jul 30 |
Laurium's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 1948 | May 29 |
| 1949 | Jun 8 |
| 1950 | May 18 |
| 1951 | May 17 |
| 1952 | Jun 1 |
| 1953 | May 23 |
| 1954 | May 26 |
| 1963 | May 23 |
| 1964 | Jun 1 |
| 1965 | May 28 |
| 1966 | May 15 |
| 1967 | May 22 |
| 1968 | May 10 |
| 1969 | May 26 |
| 1970 | May 13 |
| 1971 | Jun 1 |
| 1972 | Jun 10 |
| 1973 | May 14 |
| 1974 | May 8 |
| 1975 | Apr 26 |
| 1976 | May 8 |
| 1977 | May 10 |
| 1978 | May 2 |
| 1979 | May 16 |
| 1980 | Apr 24 |
| 1981 | May 10 |
| 1988 | May 14 |
| 1989 | May 7 |
| 1990 | May 11 |
| 1991 | May 8 |
| 1992 | May 26 |
| 1993 | May 1 |
| 1994 | May 7 |
| 1995 | Apr 26 |
| 1996 | May 12 |
| 1997 | May 15 |
| 1998 | Apr 20 |
| 1999 | May 9 |
| 2000 | Apr 29 |
| 2001 | May 12 |
| 2002 | Jun 3 |
| 2003 | May 4 |
| 2004 | May 28 |
| 2005 | May 16 |
| 2006 | May 22 |
| 2007 | May 20 |
| 2008 | May 28 |
| 2009 | Jun 6 |
| 2010 | May 15 |
| 2011 | May 27 |
| 2012 | Jun 1 |
| 2013 | Jun 3 |
| 2014 | May 17 |
| 2015 | Jun 1 |
| 2016 | May 14 |
| 2017 | May 19 |
| 2018 | May 20 |
| 2019 | Jun 3 |
| 2020 | May 13 |
| 2021 | May 29 |
| 2022 | May 23 |
| 2023 | May 25 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1948 | 114 |
| 1949 | 106 |
| 1950 | 120 |
| 1951 | 112 |
| 1952 | 96 |
| 1953 | 112 |
| 1954 | 118 |
| 1963 | 112 |
| 1964 | 104 |
| 1965 | 120 |
| 1966 | 149 |
| 1967 | 128 |
| 1968 | 146 |
| 1969 | 139 |
| 1970 | 123 |
| 1971 | 152 |
| 1972 | 120 |
| 1973 | 166 |
| 1974 | 136 |
| 1975 | 157 |
| 1976 | 136 |
| 1977 | 148 |
| 1978 | 158 |
| 1979 | 146 |
| 1980 | 162 |
| 1981 | 144 |
| 1988 | 144 |
| 1989 | 139 |
| 1990 | 148 |
| 1991 | 141 |
| 1992 | 119 |
| 1993 | 150 |
| 1994 | 176 |
| 1995 | 149 |
| 1996 | 147 |
| 1997 | 138 |
| 1998 | 156 |
| 1999 | 146 |
| 2000 | 148 |
| 2001 | 139 |
| 2002 | 120 |
| 2003 | 148 |
| 2004 | 129 |
| 2005 | 143 |
| 2006 | 110 |
| 2007 | 156 |
| 2008 | 127 |
| 2009 | 115 |
| 2010 | 139 |
| 2011 | 110 |
| 2012 | 115 |
| 2013 | 104 |
| 2014 | 117 |
| 2015 | 120 |
| 2016 | 147 |
| 2017 | 143 |
| 2018 | 131 |
| 2019 | 131 |
| 2020 | 126 |
| 2021 | 156 |
| 2022 | 127 |
| 2023 | 134 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1948 | 12.9 °C |
| 1949 | 13.1 °C |
| 1950 | 10.1 °C |
| 1951 | 11.6 °C |
| 1952 | 12.8 °C |
| 1953 | 12.3 °C |
| 1954 | 11.2 °C |
| 1963 | 12.7 °C |
| 1964 | 12.6 °C |
| 1965 | 11.4 °C |
| 1966 | 12.4 °C |
| 1967 | 11.6 °C |
| 1968 | 12.4 °C |
| 1969 | 12.7 °C |
| 1970 | 12.7 °C |
| 1971 | 12.3 °C |
| 1972 | 11.9 °C |
| 1973 | 13.3 °C |
| 1974 | 12.3 °C |
| 1975 | 13.3 °C |
| 1976 | 13.8 °C |
| 1977 | 13.6 °C |
| 1978 | 12.9 °C |
| 1979 | 12.3 °C |
| 1980 | 13.6 °C |
| 1981 | 13.2 °C |
| 1988 | 14.9 °C |
| 1989 | 13.5 °C |
| 1990 | 13.4 °C |
| 1991 | 14.6 °C |
| 1992 | 12.1 °C |
| 1993 | 12.4 °C |
| 1994 | 13.2 °C |
| 1995 | 13.7 °C |
| 1996 | 12.3 °C |
| 1997 | 12.8 °C |
| 1998 | 14.8 °C |
| 1999 | 14.6 °C |
| 2000 | 12.9 °C |
| 2001 | 13.6 °C |
| 2002 | 13.1 °C |
| 2003 | 12.7 °C |
| 2004 | 11.7 °C |
| 2005 | 14.1 °C |
| 2006 | 13.7 °C |
| 2007 | 13.7 °C |
| 2008 | 12.5 °C |
| 2009 | 12.1 °C |
| 2010 | 14.4 °C |
| 2011 | 13.2 °C |
| 2012 | 14.0 °C |
| 2013 | 12.2 °C |
| 2014 | 12.0 °C |
| 2015 | 13.8 °C |
| 2016 | 13.8 °C |
| 2017 | 13.0 °C |
| 2018 | 13.6 °C |
| 2019 | 13.1 °C |
| 2020 | 13.8 °C |
| 2021 | 14.7 °C |
| 2022 | 13.5 °C |
| 2023 | 14.0 °C |
What this means for you: Since 1948, Laurium's last spring frost has stayed at about the same time of year. The frost-free season has grown by about 1 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Hancock Houghton Co Ap (NOAA GHCN-Daily). Years with too many missing days are left out.