When to plant in Warren, ME
Planting dates worked out from Warren's own frost records, not a generic zone chart.
Safe to plant out
May 2
1 year in 10 has a later frost
Average last frost
Apr 23
about a 50% chance of a later one
Average first fall frost
Oct 28
1 year in 10 by Oct 15
Frost-free days
188
median, 1991–2020
Station used: Tenants Harbor · 14.4 km away · station 6 m, town 12 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 31 – Apr 14 | May 26 – Jun 9 | Jul 20 |
| Sweet pepper | Mar 17 – Mar 31 | May 26 – Jun 9 | Jul 25 |
| Lettuce (leaf) | Mar 13 – Mar 20 | Apr 17 – May 1 | May 27 |
| Peas | — | Apr 17 – May 15 | Jun 11 |
| Bush beans | — | May 18 – Jun 8 | Jul 7 |
| Carrot | — | Apr 29 – Jun 10 | Jun 28 |
| Beet | — | Apr 29 – Jun 10 | Jun 18 |
| Potato | — | Apr 29 – May 20 | Jul 8 |
| Kale | Mar 13 – Mar 27 | Apr 24 – May 8 | Jun 6 |
| Broccoli | Mar 6 – Mar 20 | Apr 17 – May 8 | Jun 16 |
| Cucumber | Apr 28 – May 5 | May 26 – Jun 9 | Jul 15 |
| Summer squash and zucchini | Apr 28 – May 5 | May 26 – Jun 9 | Jul 10 |
| Winter squash | Apr 28 – May 5 | May 26 – Jun 9 | Aug 14 |
| Sweet corn | — | May 18 – Jun 8 | Jul 17 |
| Onion (from sets) | — | Apr 17 – May 8 | Jul 16 |
| Garlic | — | Oct 3 – Oct 31 (fall) | following summer |
| Spinach | — | Apr 17 – May 15 | May 25 |
| Basil | Apr 14 – Apr 28 | May 26 – Jun 9 | Jul 22 |
Warren'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 |
|---|---|
| 1990 | Apr 19 |
| 1991 | Apr 20 |
| 1992 | May 7 |
| 1993 | Apr 29 |
| 1994 | Apr 23 |
| 1995 | Apr 29 |
| 1996 | Apr 28 |
| 1997 | Apr 20 |
| 1998 | Apr 12 |
| 1999 | Apr 16 |
| 2000 | Apr 25 |
| 2001 | Apr 29 |
| 2002 | May 4 |
| 2003 | Apr 20 |
| 2004 | Apr 25 |
| 2005 | Apr 22 |
| 2006 | Apr 28 |
| 2007 | Apr 19 |
| 2008 | Apr 15 |
| 2009 | Apr 21 |
| 2010 | Mar 28 |
| 2011 | Apr 16 |
| 2012 | Apr 30 |
| 2013 | Apr 22 |
| 2014 | Apr 21 |
| 2016 | Apr 28 |
| 2017 | Apr 15 |
| 2018 | May 13 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1990 | 202 |
| 1991 | 183 |
| 1992 | 176 |
| 1993 | 164 |
| 1994 | 207 |
| 1995 | 184 |
| 1996 | 166 |
| 1997 | 184 |
| 1998 | 207 |
| 1999 | 185 |
| 2000 | 186 |
| 2001 | 182 |
| 2002 | 163 |
| 2003 | 201 |
| 2004 | 192 |
| 2005 | 188 |
| 2006 | 188 |
| 2007 | 203 |
| 2008 | 190 |
| 2009 | 198 |
| 2010 | 219 |
| 2011 | 195 |
| 2013 | 189 |
| 2014 | 194 |
| 2016 | 169 |
| 2017 | 206 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1991 | 14.2 °C |
| 1992 | 12.7 °C |
| 1993 | 13.5 °C |
| 1994 | 14.0 °C |
| 1995 | 13.6 °C |
| 1996 | 13.2 °C |
| 1997 | 13.4 °C |
| 1998 | 14.0 °C |
| 1999 | 14.9 °C |
| 2000 | 13.5 °C |
| 2001 | 13.7 °C |
| 2002 | 14.0 °C |
| 2003 | 13.3 °C |
| 2004 | 12.9 °C |
| 2005 | 13.6 °C |
| 2006 | 14.0 °C |
| 2007 | 13.4 °C |
| 2009 | 13.3 °C |
| 2010 | 15.0 °C |
| 2011 | 14.1 °C |
| 2012 | 14.7 °C |
| 2013 | 13.6 °C |
| 2014 | 14.0 °C |
| 2017 | 14.8 °C |
| 2018 | 15.2 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Tenants Harbor (NOAA GHCN-Daily). Years with too many missing days are left out.