When to plant in Lynnfield, MA
Planting dates worked out from Lynnfield's own frost records, not a generic zone chart.
Safe to plant out
May 22
1 year in 10 has a later frost
Average last frost
Apr 30
about a 50% chance of a later one
Average first fall frost
Oct 15
1 year in 10 by Oct 1
Frost-free days
174
median, 1991–2020
Station used: Middleton · 6.5 km away · station 34 m, town 27 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 | Mar 27 – Apr 10 | May 22 – Jun 5 | Jul 16 |
| Sweet pepper | Mar 13 – Mar 27 | May 22 – Jun 5 | Jul 21 |
| Lettuce (leaf) | Feb 26 – Mar 5 | Apr 2 – Apr 16 | May 12 |
| Peas | — | Apr 2 – Apr 30 | May 27 |
| Bush beans | — | May 15 – Jun 5 | Jul 4 |
| Carrot | — | Apr 10 – May 22 | Jun 9 |
| Beet | — | Apr 10 – May 22 | May 30 |
| Potato | — | Apr 10 – May 1 | Jun 19 |
| Kale | Feb 26 – Mar 12 | Apr 9 – Apr 23 | May 22 |
| Broccoli | Feb 19 – Mar 5 | Apr 2 – Apr 23 | Jun 1 |
| Cucumber | Apr 24 – May 1 | May 22 – Jun 5 | Jul 11 |
| Summer squash and zucchini | Apr 24 – May 1 | May 22 – Jun 5 | Jul 6 |
| Winter squash | Apr 24 – May 1 | May 22 – Jun 5 | Aug 10 |
| Sweet corn | — | May 15 – Jun 5 | Jul 14 |
| Onion (from sets) | — | Apr 2 – Apr 23 | Jul 1 |
| Garlic | — | Oct 1 – Oct 29 (fall) | following summer |
| Spinach | — | Apr 2 – Apr 30 | May 10 |
| Basil | Apr 10 – Apr 24 | May 22 – Jun 5 | Jul 18 |
Lynnfield'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 |
|---|---|
| 1936 | Apr 25 |
| 1937 | Apr 26 |
| 1946 | Apr 18 |
| 1948 | Apr 27 |
| 1949 | Apr 25 |
| 1950 | Apr 25 |
| 1951 | Mar 27 |
| 1952 | Apr 10 |
| 1953 | Mar 22 |
| 1954 | Apr 10 |
| 1956 | May 9 |
| 1957 | Apr 16 |
| 1958 | Apr 9 |
| 1959 | Apr 23 |
| 1960 | Apr 11 |
| 1961 | May 6 |
| 1962 | May 13 |
| 1963 | May 12 |
| 1964 | May 3 |
| 1965 | Apr 25 |
| 1966 | May 11 |
| 1967 | May 7 |
| 1968 | May 9 |
| 1969 | May 27 |
| 1970 | May 7 |
| 1971 | Apr 28 |
| 1972 | May 26 |
| 1973 | Apr 15 |
| 1974 | May 5 |
| 1975 | Apr 30 |
| 1976 | Apr 13 |
| 1977 | May 10 |
| 1978 | Apr 26 |
| 1979 | Apr 21 |
| 1980 | Apr 22 |
| 1981 | Apr 22 |
| 1982 | Apr 23 |
| 1983 | May 18 |
| 1984 | May 3 |
| 1985 | May 4 |
| 1986 | May 14 |
| 1987 | May 14 |
| 1988 | Apr 23 |
| 1989 | Apr 29 |
| 1990 | Apr 24 |
| 1991 | Apr 20 |
| 1992 | May 26 |
| 1993 | Apr 29 |
| 1994 | May 21 |
| 1995 | May 2 |
| 1996 | Apr 16 |
| 1997 | May 27 |
| 1998 | Apr 14 |
| 1999 | Apr 21 |
| 2000 | Apr 29 |
| 2001 | May 7 |
| 2002 | Apr 23 |
| 2003 | May 18 |
| 2004 | May 29 |
| 2005 | Apr 22 |
| 2006 | Apr 30 |
| 2007 | Apr 20 |
| 2008 | May 1 |
| 2009 | Apr 20 |
| 2010 | Apr 13 |
| 2011 | Apr 22 |
| 2012 | Apr 6 |
| 2013 | Apr 22 |
| 2014 | Apr 22 |
| 2015 | May 15 |
| 2016 | Apr 30 |
| 2017 | May 9 |
| 2018 | Apr 23 |
| 2019 | Apr 12 |
| 2020 | May 10 |
| 2021 | Apr 23 |
| 2022 | May 1 |
| 2023 | May 18 |
| 2024 | Apr 27 |
| 2025 | Apr 21 |
| 2026 | Apr 26 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1948 | 142 |
| 1949 | 182 |
| 1950 | 173 |
| 1951 | 199 |
| 1952 | 193 |
| 1953 | 205 |
| 1954 | 180 |
| 1956 | 154 |
| 1957 | 208 |
| 1958 | 179 |
| 1959 | 178 |
| 1960 | 173 |
| 1961 | 162 |
| 1962 | 131 |
| 1963 | 134 |
| 1964 | 135 |
| 1965 | 155 |
| 1966 | 138 |
| 1967 | 153 |
| 1968 | 173 |
| 1969 | 141 |
| 1970 | 151 |
| 1971 | 191 |
| 1972 | 136 |
| 1973 | 175 |
| 1974 | 142 |
| 1975 | 162 |
| 1976 | 181 |
| 1977 | 166 |
| 1978 | 165 |
| 1979 | 171 |
| 1980 | 168 |
| 1981 | 171 |
| 1982 | 170 |
| 1983 | 155 |
| 1984 | 155 |
| 1985 | 156 |
| 1986 | 145 |
| 1987 | 151 |
| 1988 | 166 |
| 1989 | 148 |
| 1990 | 175 |
| 1991 | 177 |
| 1992 | 127 |
| 1993 | 154 |
| 1995 | 149 |
| 1996 | 171 |
| 1997 | 143 |
| 1998 | 195 |
| 1999 | 167 |
| 2000 | 176 |
| 2001 | 166 |
| 2002 | 174 |
| 2003 | 154 |
| 2004 | 129 |
| 2005 | 200 |
| 2006 | 166 |
| 2007 | 191 |
| 2008 | 174 |
| 2009 | 176 |
| 2010 | 192 |
| 2011 | 188 |
| 2012 | 189 |
| 2013 | 174 |
| 2014 | 166 |
| 2015 | 134 |
| 2016 | 163 |
| 2017 | 175 |
| 2018 | 178 |
| 2019 | 190 |
| 2020 | 133 |
| 2021 | 192 |
| 2022 | 180 |
| 2023 | 166 |
| 2024 | 168 |
| 2025 | 171 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1948 | 16.7 °C |
| 1949 | 18.1 °C |
| 1950 | 16.3 °C |
| 1951 | 17.1 °C |
| 1952 | 17.6 °C |
| 1953 | 17.2 °C |
| 1954 | 16.6 °C |
| 1956 | 16.1 °C |
| 1957 | 17.7 °C |
| 1958 | 16.8 °C |
| 1959 | 18.0 °C |
| 1960 | 17.2 °C |
| 1961 | 16.9 °C |
| 1962 | 15.9 °C |
| 1963 | 16.7 °C |
| 1964 | 15.7 °C |
| 1965 | 16.6 °C |
| 1966 | 16.5 °C |
| 1967 | 16.2 °C |
| 1968 | 17.0 °C |
| 1969 | 17.2 °C |
| 1970 | 17.5 °C |
| 1971 | 17.2 °C |
| 1972 | 16.3 °C |
| 1973 | 17.7 °C |
| 1974 | 16.8 °C |
| 1975 | 17.1 °C |
| 1976 | 17.5 °C |
| 1977 | 17.4 °C |
| 1978 | 16.6 °C |
| 1979 | 17.2 °C |
| 1980 | 17.3 °C |
| 1981 | 17.2 °C |
| 1982 | 15.8 °C |
| 1983 | 18.2 °C |
| 1984 | 17.1 °C |
| 1985 | 16.7 °C |
| 1986 | 16.3 °C |
| 1987 | 16.3 °C |
| 1988 | 17.8 °C |
| 1989 | 16.8 °C |
| 1990 | 16.6 °C |
| 1992 | 16.4 °C |
| 1993 | 17.8 °C |
| 1995 | 17.4 °C |
| 1996 | 17.6 °C |
| 1997 | 17.4 °C |
| 1998 | 18.2 °C |
| 1999 | 18.7 °C |
| 2000 | 17.4 °C |
| 2001 | 18.6 °C |
| 2002 | 18.9 °C |
| 2003 | 17.6 °C |
| 2004 | 17.7 °C |
| 2005 | 18.3 °C |
| 2006 | 18.0 °C |
| 2007 | 18.1 °C |
| 2008 | 18.0 °C |
| 2009 | 17.7 °C |
| 2010 | 19.8 °C |
| 2011 | 18.4 °C |
| 2012 | 19.1 °C |
| 2013 | 18.5 °C |
| 2014 | 17.6 °C |
| 2015 | 18.3 °C |
| 2016 | 18.4 °C |
| 2017 | 18.7 °C |
| 2018 | 18.7 °C |
| 2019 | 16.7 °C |
| 2020 | 16.7 °C |
| 2021 | 17.2 °C |
| 2022 | 17.6 °C |
| 2023 | 17.1 °C |
| 2024 | 17.3 °C |
| 2025 | 17.2 °C |
| 2026 | 17.3 °C |
What this means for you: Since 1936, Lynnfield's last spring frost has come about 1 day later per decade, on average. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Middleton (NOAA GHCN-Daily). Years with too many missing days are left out.