When to plant in Hyannis, MA
Planting dates worked out from Hyannis's own frost records, not a generic zone chart.
Safe to plant out
May 7
1 year in 10 has a later frost
Average last frost
Apr 26
about a 50% chance of a later one
Average first fall frost
Oct 24
1 year in 10 by Oct 7
Frost-free days
179
median, 1991–2020
Station used: Hyannis Barnstable Muni Ap · 2.4 km away · station 11 m, town 9 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 16 – Mar 30 | May 11 – May 25 | Jul 5 |
| Sweet pepper | Mar 2 – Mar 16 | May 11 – May 25 | Jul 10 |
| Lettuce (leaf) | Feb 28 – Mar 7 | Apr 4 – Apr 18 | May 14 |
| Peas | — | Apr 4 – May 2 | May 29 |
| Bush beans | — | May 4 – May 25 | Jun 23 |
| Carrot | — | Apr 17 – May 29 | Jun 16 |
| Beet | — | Apr 17 – May 29 | Jun 6 |
| Potato | — | Apr 17 – May 8 | Jun 26 |
| Kale | Feb 28 – Mar 14 | Apr 11 – Apr 25 | May 24 |
| Broccoli | Feb 21 – Mar 7 | Apr 4 – Apr 25 | Jun 3 |
| Cucumber | Apr 13 – Apr 20 | May 11 – May 25 | Jun 30 |
| Summer squash and zucchini | Apr 13 – Apr 20 | May 11 – May 25 | Jun 25 |
| Winter squash | Apr 13 – Apr 20 | May 11 – May 25 | Jul 30 |
| Sweet corn | — | May 4 – May 25 | Jul 3 |
| Onion (from sets) | — | Apr 4 – Apr 25 | Jul 3 |
| Garlic | — | Oct 10 – Nov 7 (fall) | following summer |
| Spinach | — | Apr 4 – May 2 | May 12 |
| Basil | Mar 30 – Apr 13 | May 11 – May 25 | Jul 7 |
Hyannis'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 |
|---|---|
| 1998 | Apr 14 |
| 1999 | May 14 |
| 2000 | May 1 |
| 2001 | May 7 |
| 2002 | Apr 25 |
| 2003 | May 5 |
| 2004 | May 5 |
| 2005 | Apr 22 |
| 2006 | Apr 28 |
| 2007 | May 7 |
| 2008 | May 1 |
| 2009 | Apr 20 |
| 2010 | May 13 |
| 2011 | Apr 16 |
| 2012 | Apr 10 |
| 2013 | Apr 22 |
| 2014 | Apr 21 |
| 2015 | Apr 26 |
| 2016 | Apr 18 |
| 2017 | Apr 19 |
| 2018 | Apr 24 |
| 2019 | Apr 11 |
| 2020 | Apr 21 |
| 2021 | Apr 4 |
| 2022 | Apr 5 |
| 2023 | Apr 9 |
| 2024 | Apr 27 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1998 | 174 |
| 1999 | 146 |
| 2000 | 174 |
| 2001 | 163 |
| 2002 | 176 |
| 2003 | 154 |
| 2004 | 153 |
| 2005 | 182 |
| 2006 | 168 |
| 2007 | 174 |
| 2008 | 172 |
| 2009 | 181 |
| 2010 | 172 |
| 2011 | 197 |
| 2012 | 209 |
| 2013 | 186 |
| 2014 | 207 |
| 2015 | 182 |
| 2016 | 203 |
| 2017 | 204 |
| 2018 | 180 |
| 2019 | 208 |
| 2020 | 179 |
| 2021 | 214 |
| 2022 | 197 |
| 2023 | 206 |
| 2024 | 183 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1998 | 16.7 °C |
| 1999 | 17.1 °C |
| 2000 | 15.8 °C |
| 2001 | 16.3 °C |
| 2002 | 16.6 °C |
| 2003 | 16.0 °C |
| 2004 | 16.1 °C |
| 2005 | 16.3 °C |
| 2006 | 16.4 °C |
| 2007 | 16.4 °C |
| 2008 | 16.8 °C |
| 2009 | 16.8 °C |
| 2010 | 18.2 °C |
| 2011 | 17.4 °C |
| 2012 | 17.2 °C |
| 2013 | 17.2 °C |
| 2014 | 16.6 °C |
| 2015 | 17.4 °C |
| 2016 | 17.4 °C |
| 2017 | 17.1 °C |
| 2018 | 17.6 °C |
| 2019 | 17.4 °C |
| 2020 | 17.8 °C |
| 2021 | 17.9 °C |
| 2022 | 18.1 °C |
| 2023 | 16.9 °C |
| 2024 | 16.8 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Hyannis Barnstable Muni Ap (NOAA GHCN-Daily). Years with too many missing days are left out.