When to plant in Morrisonville, IL
Planting dates worked out from Morrisonville's own frost records, not a generic zone chart.
Safe to plant out
Apr 28
1 year in 10 has a later frost
Average last frost
Apr 15
about a 50% chance of a later one
Average first fall frost
Oct 13
1 year in 10 by Sep 24
Frost-free days
177
median, 1991–2020
Station used: Morrisonville · 0.7 km away · station 192 m, town 192 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 3 – Mar 17 | Apr 28 – May 12 | Jun 22 |
| Sweet pepper | Feb 17 – Mar 3 | Apr 28 – May 12 | Jun 27 |
| Lettuce (leaf) | Feb 13 – Feb 20 | Mar 20 – Apr 3 | Apr 29 |
| Peas | — | Mar 20 – Apr 17 | May 14 |
| Bush beans | — | Apr 21 – May 12 | Jun 10 |
| Carrot | — | Mar 29 – May 10 | May 28 |
| Beet | — | Mar 29 – May 10 | May 18 |
| Potato | — | Mar 29 – Apr 19 | Jun 7 |
| Kale | Feb 13 – Feb 27 | Mar 27 – Apr 10 | May 9 |
| Broccoli | Feb 6 – Feb 20 | Mar 20 – Apr 10 | May 19 |
| Cucumber | Mar 31 – Apr 7 | Apr 28 – May 12 | Jun 17 |
| Summer squash and zucchini | Mar 31 – Apr 7 | Apr 28 – May 12 | Jun 12 |
| Winter squash | Mar 31 – Apr 7 | Apr 28 – May 12 | Jul 17 |
| Sweet corn | — | Apr 21 – May 12 | Jun 20 |
| Onion (from sets) | — | Mar 20 – Apr 10 | Jun 18 |
| Garlic | — | Sep 29 – Oct 27 (fall) | following summer |
| Spinach | — | Mar 20 – Apr 17 | Apr 27 |
| Basil | Mar 17 – Mar 31 | Apr 28 – May 12 | Jun 24 |
Morrisonville'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 |
|---|---|
| 1980 | May 9 |
| 1981 | May 20 |
| 1985 | Apr 10 |
| 1986 | Apr 23 |
| 1987 | Apr 13 |
| 1988 | Apr 29 |
| 1989 | Apr 14 |
| 1990 | Apr 18 |
| 1991 | Mar 31 |
| 1992 | Apr 28 |
| 1993 | Apr 21 |
| 1994 | Apr 8 |
| 1995 | Apr 6 |
| 1996 | Apr 14 |
| 1997 | Apr 24 |
| 1998 | Apr 5 |
| 1999 | Mar 29 |
| 2000 | Apr 13 |
| 2001 | Apr 18 |
| 2002 | Apr 6 |
| 2003 | Jun 3 |
| 2004 | Apr 14 |
| 2005 | May 5 |
| 2006 | Apr 28 |
| 2007 | Apr 15 |
| 2009 | Apr 12 |
| 2010 | Mar 29 |
| 2011 | Mar 31 |
| 2012 | Apr 11 |
| 2014 | Apr 16 |
| 2023 | Apr 25 |
| 2024 | Apr 7 |
| 2025 | Apr 8 |
| 2026 | Mar 28 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1980 | 148 |
| 1981 | 151 |
| 1985 | 173 |
| 1986 | 174 |
| 1987 | 172 |
| 1990 | 175 |
| 1991 | 172 |
| 1992 | 171 |
| 1993 | 171 |
| 1994 | 199 |
| 1995 | 169 |
| 1996 | 177 |
| 1997 | 173 |
| 1998 | 199 |
| 1999 | 176 |
| 2001 | 181 |
| 2002 | 191 |
| 2003 | 119 |
| 2004 | 171 |
| 2005 | 173 |
| 2006 | 166 |
| 2007 | 195 |
| 2009 | 181 |
| 2010 | 189 |
| 2011 | 184 |
| 2012 | 200 |
| 2014 | 198 |
| 2023 | 187 |
| 2024 | 191 |
| 2025 | 198 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1980 | 20.0 °C |
| 1981 | 19.4 °C |
| 1985 | 19.6 °C |
| 1986 | 20.6 °C |
| 1987 | 20.9 °C |
| 1988 | 20.6 °C |
| 1989 | 18.8 °C |
| 1990 | 19.1 °C |
| 1991 | 21.3 °C |
| 1992 | 18.5 °C |
| 1993 | 19.4 °C |
| 1994 | 19.2 °C |
| 1995 | 19.7 °C |
| 1996 | 18.9 °C |
| 1997 | 18.6 °C |
| 1998 | 20.7 °C |
| 1999 | 19.9 °C |
| 2001 | 20.0 °C |
| 2002 | 19.9 °C |
| 2003 | 18.7 °C |
| 2004 | 19.1 °C |
| 2005 | 20.6 °C |
| 2006 | 20.1 °C |
| 2007 | 20.5 °C |
| 2008 | 18.8 °C |
| 2009 | 18.8 °C |
| 2010 | 20.9 °C |
| 2011 | 20.8 °C |
| 2012 | 21.7 °C |
| 2014 | 19.6 °C |
| 2023 | 20.9 °C |
| 2024 | 21.5 °C |
| 2025 | 21.8 °C |
| 2026 | 23.3 °C |
What this means for you: Since 1980, Morrisonville's last spring frost has come about 4 days earlier per decade, on average. The frost-free season has grown by about 7 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Morrisonville (NOAA GHCN-Daily). Years with too many missing days are left out.