When to plant in Saint Lawrence, PA
Planting dates worked out from Saint Lawrence's own frost records, not a generic zone chart.
Safe to plant out
Apr 29
1 year in 10 has a later frost
Average last frost
Apr 16
about a 50% chance of a later one
Average first fall frost
Oct 27
1 year in 10 by Oct 13
Frost-free days
192
median, 1991–2020
Station used: Reading Rgnl Ap · 9.0 km away · station 101 m, town 90 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 4 – Mar 18 | Apr 29 – May 13 | Jun 23 |
| Sweet pepper | Feb 18 – Mar 4 | Apr 29 – May 13 | Jun 28 |
| Lettuce (leaf) | Feb 13 – Feb 20 | Mar 20 – Apr 3 | Apr 29 |
| Peas | — | Mar 20 – Apr 17 | May 14 |
| Bush beans | — | Apr 22 – May 13 | Jun 11 |
| Carrot | — | Mar 30 – May 11 | May 29 |
| Beet | — | Mar 30 – May 11 | May 19 |
| Potato | — | Mar 30 – Apr 20 | Jun 8 |
| Kale | Feb 13 – Feb 27 | Mar 27 – Apr 10 | May 9 |
| Broccoli | Feb 6 – Feb 20 | Mar 20 – Apr 10 | May 19 |
| Cucumber | Apr 1 – Apr 8 | Apr 29 – May 13 | Jun 18 |
| Summer squash and zucchini | Apr 1 – Apr 8 | Apr 29 – May 13 | Jun 13 |
| Winter squash | Apr 1 – Apr 8 | Apr 29 – May 13 | Jul 18 |
| Sweet corn | — | Apr 22 – May 13 | Jun 21 |
| Onion (from sets) | — | Mar 20 – Apr 10 | Jun 18 |
| Garlic | — | Oct 13 – Nov 10 (fall) | following summer |
| Spinach | — | Mar 20 – Apr 17 | Apr 27 |
| Basil | Mar 18 – Apr 1 | Apr 29 – May 13 | Jun 25 |
Saint Lawrence'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 |
|---|---|
| 1949 | Apr 29 |
| 1999 | Apr 25 |
| 2000 | Apr 14 |
| 2001 | Apr 29 |
| 2002 | Apr 24 |
| 2003 | Apr 14 |
| 2004 | Apr 10 |
| 2005 | May 3 |
| 2006 | Apr 10 |
| 2007 | Apr 14 |
| 2008 | Apr 14 |
| 2009 | Apr 16 |
| 2010 | Mar 27 |
| 2011 | Mar 30 |
| 2012 | Apr 13 |
| 2013 | Apr 21 |
| 2014 | Apr 17 |
| 2015 | Apr 25 |
| 2016 | Apr 14 |
| 2017 | Apr 9 |
| 2018 | Apr 21 |
| 2019 | Apr 3 |
| 2020 | May 9 |
| 2021 | Apr 23 |
| 2022 | Apr 18 |
| 2023 | Apr 10 |
| 2024 | Mar 25 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1949 | 180 |
| 1999 | 192 |
| 2000 | 177 |
| 2001 | 162 |
| 2002 | 190 |
| 2003 | 191 |
| 2004 | 195 |
| 2005 | 191 |
| 2006 | 185 |
| 2007 | 197 |
| 2008 | 188 |
| 2009 | 201 |
| 2010 | 218 |
| 2011 | 213 |
| 2012 | 182 |
| 2013 | 186 |
| 2014 | 204 |
| 2015 | 175 |
| 2016 | 194 |
| 2017 | 213 |
| 2018 | 202 |
| 2019 | 212 |
| 2020 | 177 |
| 2021 | 193 |
| 2022 | 193 |
| 2023 | 204 |
| 2024 | 229 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1949 | 19.2 °C |
| 1999 | 19.4 °C |
| 2000 | 18.1 °C |
| 2001 | 18.8 °C |
| 2002 | 20.0 °C |
| 2003 | 18.5 °C |
| 2004 | 19.4 °C |
| 2005 | 20.2 °C |
| 2006 | 19.4 °C |
| 2007 | 19.4 °C |
| 2008 | 19.4 °C |
| 2009 | 19.0 °C |
| 2010 | 21.2 °C |
| 2011 | 20.9 °C |
| 2012 | 20.6 °C |
| 2013 | 19.7 °C |
| 2014 | 19.3 °C |
| 2015 | 20.3 °C |
| 2016 | 20.2 °C |
| 2017 | 19.9 °C |
| 2018 | 20.1 °C |
| 2019 | 20.7 °C |
| 2020 | 19.9 °C |
| 2021 | 20.5 °C |
| 2022 | 20.6 °C |
| 2023 | 20.1 °C |
| 2024 | 21.2 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Reading Rgnl Ap (NOAA GHCN-Daily). Years with too many missing days are left out.