When to plant in Roxana, IL

Planting dates worked out from Roxana's own frost records, not a generic zone chart.

Safe to plant out

Apr 11

1 year in 10 has a later frost

Average last frost

Mar 31

about a 50% chance of a later one

Average first fall frost

Nov 8

1 year in 10 by Nov 1

Frost-free days

215

median, 1991–2020

Station used: Alton - Melvin Price L&d · 6.6 km away · station 123 m, town 136 m. How we match towns to stations

This season

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Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Feb 14 – Feb 28	Apr 11 – Apr 25	Jun 5
Sweet pepper	Jan 31 – Feb 14	Apr 11 – Apr 25	Jun 10
Lettuce (leaf)	Feb 5 – Feb 12	Mar 12 – Mar 26	Apr 21
Peas	—	Mar 12 – Apr 9	May 6
Bush beans	—	Apr 4 – Apr 25	May 24
Carrot	—	Mar 20 – May 1	May 19
Beet	—	Mar 20 – May 1	May 9
Potato	—	Mar 20 – Apr 10	May 29
Kale	Feb 5 – Feb 19	Mar 19 – Apr 2	May 1
Broccoli	Jan 29 – Feb 12	Mar 12 – Apr 2	May 11
Cucumber	Mar 14 – Mar 21	Apr 11 – Apr 25	May 31
Summer squash and zucchini	Mar 14 – Mar 21	Apr 11 – Apr 25	May 26
Winter squash	Mar 14 – Mar 21	Apr 11 – Apr 25	Jun 30
Sweet corn	—	Apr 4 – Apr 25	Jun 3
Onion (from sets)	—	Mar 12 – Apr 2	Jun 10
Garlic	—	Oct 22 – Nov 19 (fall)	following summer
Spinach	—	Mar 12 – Apr 9	Apr 19
Basil	Feb 28 – Mar 14	Apr 11 – Apr 25	Jun 7

Plan all 65 crops for Roxana

Roxana'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 19
1950	Apr 15
1951	Apr 17
1952	Apr 11
1953	Apr 21
1954	Apr 3
1955	Mar 29
1956	Apr 24
1958	Mar 22
1959	Mar 28
1960	Apr 10
1961	Apr 16
1962	Apr 15
1963	Mar 22
1964	Apr 8
1965	Mar 31
1966	May 10
1967	Mar 19
1968	Apr 6
1969	Apr 1
1970	Apr 5
1971	Apr 7
1972	Apr 10
1973	Apr 13
1974	Apr 9
1975	Apr 8
1976	Apr 14
1977	Mar 22
1978	Mar 27
1979	Apr 7
1980	Apr 15
1981	Mar 23
1982	Apr 10
1983	Apr 20
1985	Apr 10
1986	Apr 22
1987	Apr 5
1988	Mar 20
1990	Apr 8
1991	Mar 31
1992	Apr 4
1993	Apr 2
1994	Apr 8
1995	Apr 6
1996	Apr 6
1997	Apr 12
1998	Mar 25
2000	Apr 12
2001	Mar 31
2002	Apr 5
2003	Mar 12
2004	Mar 23
2005	Mar 16
2007	Apr 9
2008	Mar 25
2009	Mar 14
2016	Apr 10
2025	Apr 9

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1949	189
1950	202
1951	197
1952	177
1953	197
1955	218
1956	197
1958	248
1959	221
1960	192
1961	203
1962	193
1963	237
1964	224
1965	230
1966	174
1967	229
1968	216
1970	223
1971	213
1972	191
1973	205
1974	218
1975	219
1976	184
1977	233
1978	210
1979	189
1980	193
1981	213
1983	198
1985	174
1986	201
1987	218
1988	224
1990	213
1991	215
1992	197
1993	211
1994	228
1995	210
1996	209
1997	213
1998	226
2002	210
2003	240
2004	234
2005	245
2008	229
2025	206

Each year's average temperature, April to SeptemberLong-term trend

See the data as a table

Year	Growing-season temperature
1948	22.2 °C
1949	21.2 °C
1950	19.8 °C
1951	20.4 °C
1952	22.2 °C
1953	22.2 °C
1955	22.2 °C
1956	21.0 °C
1958	20.9 °C
1959	22.2 °C
1960	21.5 °C
1961	20.2 °C
1962	21.5 °C
1963	21.5 °C
1964	22.0 °C
1965	21.5 °C
1966	20.5 °C
1967	20.1 °C
1968	21.0 °C
1969	20.7 °C
1970	21.3 °C
1971	20.3 °C
1972	20.4 °C
1973	20.2 °C
1974	19.9 °C
1975	20.4 °C
1976	20.2 °C
1977	22.2 °C
1978	21.1 °C
1979	20.5 °C
1980	21.7 °C
1981	20.9 °C
1982	20.0 °C
1983	21.3 °C
1985	19.6 °C
1986	21.8 °C
1987	22.7 °C
1992	19.9 °C
1993	20.6 °C
1994	20.7 °C
1995	20.6 °C
1996	19.9 °C
1997	19.9 °C
1998	22.2 °C
2002	21.7 °C
2003	20.3 °C
2004	20.5 °C
2005	22.9 °C
2007	22.6 °C
2008	20.5 °C
2009	21.2 °C
2016	21.4 °C

What this means for you: Since 1949, Roxana's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 3 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Alton - Melvin Price L&d (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Wood River Hartford South Roxana Rosewood Heights East Alton Bethalto