When to plant in Monaca, PA
Planting dates worked out from Monaca's own frost records, not a generic zone chart.
Safe to plant out
May 10
1 year in 10 has a later frost
Average last frost
Apr 27
about a 50% chance of a later one
Average first fall frost
Oct 25
1 year in 10 by Oct 7
Frost-free days
180
median, 1991–2020
Station used: Montgomery L&d · 10.6 km away · station 210 m, town 225 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 15 – Mar 29 | May 10 – May 24 | Jul 4 |
| Sweet pepper | Mar 1 – Mar 15 | May 10 – May 24 | Jul 9 |
| Lettuce (leaf) | Feb 23 – Mar 2 | Mar 30 – Apr 13 | May 9 |
| Peas | — | Mar 25 – Apr 22 | May 19 |
| Bush beans | — | May 3 – May 24 | Jun 22 |
| Carrot | — | Apr 6 – May 18 | Jun 5 |
| Beet | — | Apr 3 – May 15 | May 23 |
| Potato | — | Apr 6 – Apr 27 | Jun 15 |
| Kale | Feb 18 – Mar 4 | Apr 1 – Apr 15 | May 14 |
| Broccoli | Feb 16 – Mar 2 | Mar 30 – Apr 20 | May 29 |
| Cucumber | Apr 12 – Apr 19 | May 10 – May 24 | Jun 29 |
| Summer squash and zucchini | Apr 12 – Apr 19 | May 10 – May 24 | Jun 24 |
| Winter squash | Apr 12 – Apr 19 | May 10 – May 24 | Jul 29 |
| Sweet corn | — | May 3 – May 24 | Jul 2 |
| Onion (from sets) | — | Mar 30 – Apr 20 | Jun 28 |
| Garlic | — | Oct 11 – Nov 8 (fall) | following summer |
| Spinach | — | Mar 25 – Apr 22 | May 2 |
| Basil | Mar 29 – Apr 12 | May 10 – May 24 | Jul 6 |
Monaca'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 |
|---|---|
| 1962 | Apr 24 |
| 1963 | May 25 |
| 1965 | Apr 29 |
| 1966 | May 11 |
| 1967 | Apr 29 |
| 1968 | May 7 |
| 1969 | May 1 |
| 1970 | May 7 |
| 1971 | May 4 |
| 1972 | May 11 |
| 1973 | May 6 |
| 1974 | May 8 |
| 1975 | Apr 27 |
| 1976 | May 9 |
| 1977 | May 11 |
| 1978 | May 2 |
| 1979 | May 5 |
| 1980 | May 9 |
| 1981 | May 7 |
| 1982 | May 10 |
| 1983 | May 17 |
| 1984 | May 17 |
| 1985 | Apr 30 |
| 1988 | Apr 26 |
| 1989 | Apr 25 |
| 1990 | Apr 24 |
| 1991 | Apr 12 |
| 1992 | Apr 29 |
| 1993 | Apr 27 |
| 1994 | May 3 |
| 1995 | Apr 26 |
| 1996 | May 14 |
| 1997 | Apr 20 |
| 1998 | Apr 28 |
| 1999 | Apr 25 |
| 2000 | Apr 27 |
| 2001 | Apr 30 |
| 2002 | May 22 |
| 2003 | Apr 24 |
| 2004 | May 4 |
| 2005 | May 5 |
| 2006 | Apr 26 |
| 2007 | Apr 14 |
| 2008 | Apr 17 |
| 2009 | Apr 14 |
| 2010 | Apr 11 |
| 2011 | May 6 |
| 2012 | Apr 30 |
| 2013 | May 15 |
| 2014 | Apr 25 |
| 2015 | Apr 25 |
| 2016 | Apr 15 |
| 2017 | May 10 |
| 2018 | May 1 |
| 2019 | Apr 4 |
| 2020 | May 10 |
| 2021 | Apr 27 |
| 2022 | Apr 29 |
| 2023 | Apr 26 |
| 2024 | Apr 26 |
| 2025 | Apr 18 |
| 2026 | Apr 22 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1962 | 183 |
| 1963 | 141 |
| 1965 | 158 |
| 1966 | 162 |
| 1967 | 173 |
| 1968 | 176 |
| 1969 | 169 |
| 1970 | 162 |
| 1971 | 184 |
| 1972 | 151 |
| 1973 | 181 |
| 1974 | 137 |
| 1975 | 158 |
| 1976 | 161 |
| 1977 | 158 |
| 1978 | 149 |
| 1979 | 158 |
| 1980 | 166 |
| 1981 | 162 |
| 1982 | 159 |
| 1983 | 165 |
| 1984 | 169 |
| 1985 | 160 |
| 1988 | 168 |
| 1989 | 192 |
| 1990 | 185 |
| 1991 | 187 |
| 1992 | 160 |
| 1993 | 166 |
| 1994 | 191 |
| 1995 | 191 |
| 1996 | 171 |
| 1997 | 185 |
| 1998 | 188 |
| 1999 | 164 |
| 2000 | 184 |
| 2001 | 160 |
| 2002 | 164 |
| 2003 | 161 |
| 2004 | 153 |
| 2005 | 189 |
| 2006 | 186 |
| 2007 | 201 |
| 2008 | 184 |
| 2009 | 201 |
| 2010 | 202 |
| 2011 | 175 |
| 2012 | 166 |
| 2013 | 165 |
| 2014 | 191 |
| 2015 | 176 |
| 2016 | 210 |
| 2017 | 174 |
| 2018 | 171 |
| 2019 | 211 |
| 2020 | 173 |
| 2021 | 190 |
| 2023 | 188 |
| 2024 | 184 |
| 2025 | 205 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1962 | 18.4 °C |
| 1963 | 17.6 °C |
| 1965 | 18.5 °C |
| 1966 | 17.6 °C |
| 1967 | 17.6 °C |
| 1968 | 18.6 °C |
| 1969 | 18.7 °C |
| 1970 | 19.4 °C |
| 1971 | 18.1 °C |
| 1972 | 17.9 °C |
| 1973 | 18.6 °C |
| 1974 | 17.8 °C |
| 1975 | 18.0 °C |
| 1976 | 17.5 °C |
| 1977 | 18.9 °C |
| 1978 | 18.5 °C |
| 1979 | 17.8 °C |
| 1980 | 18.6 °C |
| 1981 | 18.5 °C |
| 1982 | 18.3 °C |
| 1983 | 18.2 °C |
| 1984 | 17.9 °C |
| 1985 | 18.3 °C |
| 1986 | 19.3 °C |
| 1989 | 18.0 °C |
| 1990 | 17.5 °C |
| 1991 | 20.3 °C |
| 1994 | 18.1 °C |
| 1995 | 18.6 °C |
| 2001 | 18.7 °C |
| 2004 | 18.6 °C |
| 2009 | 18.2 °C |
| 2010 | 19.9 °C |
| 2011 | 18.6 °C |
| 2012 | 18.5 °C |
| 2013 | 17.6 °C |
| 2014 | 17.4 °C |
| 2015 | 18.4 °C |
| 2016 | 18.8 °C |
| 2017 | 18.1 °C |
| 2018 | 18.9 °C |
| 2019 | 18.9 °C |
| 2020 | 18.4 °C |
| 2021 | 18.6 °C |
| 2022 | 18.5 °C |
| 2023 | 17.7 °C |
| 2024 | 19.4 °C |
| 2025 | 18.5 °C |
| 2026 | 19.1 °C |
What this means for you: Since 1962, Monaca's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 5 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Montgomery L&d (NOAA GHCN-Daily). Years with too many missing days are left out.