When to plant in Curtisville, PA
Planting dates worked out from Curtisville's own frost records, not a generic zone chart.
Safe to plant out
May 23
1 year in 10 has a later frost
Average last frost
May 8
about a 50% chance of a later one
Average first fall frost
Oct 14
1 year in 10 by Oct 4
Frost-free days
160
median, 1991–2020
Station used: Butler 2 Sw · 22.8 km away · station 305 m, town 326 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 28 – Apr 11 | May 23 – Jun 6 | Jul 17 |
| Sweet pepper | Mar 14 – Mar 28 | May 23 – Jun 6 | Jul 22 |
| Lettuce (leaf) | Mar 6 – Mar 13 | Apr 10 – Apr 24 | May 20 |
| Peas | — | Apr 1 – Apr 29 | May 26 |
| Bush beans | — | May 16 – Jun 6 | Jul 5 |
| Carrot | — | Apr 17 – May 29 | Jun 16 |
| Beet | — | Apr 10 – May 22 | May 30 |
| Potato | — | Apr 17 – May 8 | Jun 26 |
| Kale | Feb 27 – Mar 13 | Apr 10 – Apr 24 | May 23 |
| Broccoli | Feb 27 – Mar 13 | Apr 10 – May 1 | Jun 9 |
| Cucumber | Apr 25 – May 2 | May 23 – Jun 6 | Jul 12 |
| Summer squash and zucchini | Apr 25 – May 2 | May 23 – Jun 6 | Jul 7 |
| Winter squash | Apr 25 – May 2 | May 23 – Jun 6 | Aug 11 |
| Sweet corn | — | May 16 – Jun 6 | Jul 15 |
| Onion (from sets) | — | Apr 10 – May 1 | Jul 9 |
| Garlic | — | Sep 30 – Oct 28 (fall) | following summer |
| Spinach | — | Apr 1 – Apr 29 | May 9 |
| Basil | Apr 11 – Apr 25 | May 23 – Jun 6 | Jul 19 |
Curtisville'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 |
|---|---|
| 1968 | May 7 |
| 1969 | May 27 |
| 1970 | May 8 |
| 1971 | May 28 |
| 1972 | Jun 11 |
| 1973 | May 17 |
| 1974 | May 11 |
| 1975 | May 8 |
| 1976 | May 14 |
| 1977 | Jun 8 |
| 1978 | May 11 |
| 1979 | May 17 |
| 1980 | May 15 |
| 1981 | May 20 |
| 1984 | May 17 |
| 1985 | May 9 |
| 1986 | May 5 |
| 1987 | May 6 |
| 1988 | May 26 |
| 1989 | May 4 |
| 1991 | Apr 18 |
| 1992 | May 7 |
| 1993 | May 22 |
| 1994 | May 15 |
| 1995 | May 8 |
| 1996 | May 15 |
| 1997 | May 23 |
| 1998 | Apr 28 |
| 1999 | Apr 27 |
| 2000 | Apr 28 |
| 2001 | Apr 30 |
| 2002 | May 23 |
| 2003 | Apr 28 |
| 2004 | May 4 |
| 2005 | May 6 |
| 2006 | May 23 |
| 2007 | Apr 21 |
| 2010 | May 11 |
| 2015 | May 23 |
| 2016 | May 17 |
| 2017 | May 10 |
| 2018 | May 2 |
| 2019 | Apr 30 |
| 2020 | May 14 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1968 | 150 |
| 1969 | 134 |
| 1970 | 161 |
| 1971 | 132 |
| 1972 | 120 |
| 1973 | 154 |
| 1974 | 135 |
| 1975 | 128 |
| 1976 | 133 |
| 1977 | 127 |
| 1978 | 140 |
| 1979 | 146 |
| 1980 | 143 |
| 1981 | 145 |
| 1984 | 169 |
| 1985 | 150 |
| 1986 | 134 |
| 1987 | 155 |
| 1988 | 134 |
| 1989 | 171 |
| 1991 | 162 |
| 1992 | 152 |
| 1993 | 131 |
| 1994 | 148 |
| 1995 | 161 |
| 1996 | 141 |
| 1997 | 146 |
| 1998 | 179 |
| 1999 | 162 |
| 2000 | 162 |
| 2001 | 160 |
| 2002 | 143 |
| 2003 | 157 |
| 2004 | 154 |
| 2005 | 175 |
| 2006 | 142 |
| 2007 | 190 |
| 2010 | 162 |
| 2016 | 146 |
| 2017 | 159 |
| 2018 | 169 |
| 2019 | 165 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1968 | 16.6 °C |
| 1969 | 16.9 °C |
| 1970 | 17.4 °C |
| 1971 | 15.9 °C |
| 1972 | 16.2 °C |
| 1973 | 16.8 °C |
| 1974 | 15.7 °C |
| 1975 | 16.2 °C |
| 1976 | 15.6 °C |
| 1977 | 17.1 °C |
| 1978 | 16.3 °C |
| 1979 | 16.8 °C |
| 1980 | 17.2 °C |
| 1981 | 17.4 °C |
| 1983 | 17.0 °C |
| 1984 | 15.9 °C |
| 1985 | 16.9 °C |
| 1986 | 17.4 °C |
| 1987 | 17.7 °C |
| 1988 | 17.2 °C |
| 1989 | 16.2 °C |
| 1990 | 16.2 °C |
| 1991 | 18.3 °C |
| 1992 | 15.4 °C |
| 1993 | 16.8 °C |
| 1994 | 16.5 °C |
| 1995 | 16.8 °C |
| 1996 | 16.6 °C |
| 1997 | 15.3 °C |
| 1998 | 17.6 °C |
| 1999 | 17.5 °C |
| 2000 | 16.7 °C |
| 2001 | 17.0 °C |
| 2002 | 17.7 °C |
| 2003 | 16.7 °C |
| 2004 | 16.9 °C |
| 2005 | 17.9 °C |
| 2006 | 17.1 °C |
| 2007 | 17.1 °C |
| 2010 | 18.2 °C |
| 2011 | 18.4 °C |
| 2013 | 17.0 °C |
| 2014 | 16.8 °C |
| 2015 | 17.6 °C |
| 2016 | 17.6 °C |
| 2017 | 17.3 °C |
| 2018 | 17.4 °C |
| 2019 | 17.6 °C |
What this means for you: Since 1968, Curtisville's last spring frost has come about 3 days earlier per decade, on average. The frost-free season has grown by about 6 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Butler 2 Sw (NOAA GHCN-Daily). Years with too many missing days are left out.