When to plant in Roberts, WI

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

Safe to plant out

May 21

1 year in 10 has a later frost

Average last frost

May 10

about a 50% chance of a later one

Average first fall frost

Sep 29

1 year in 10 by Sep 15

Frost-free days

144

median, 1991–2020

Station used: River Falls · 15.1 km away · station 286 m, town 315 m. How we match towns to stations

This season

Plan your garden.

Build my Roberts plan

Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Mar 26 – Apr 9	May 21 – Jun 4	Jul 15
Sweet pepper	Mar 12 – Mar 26	May 21 – Jun 4	Jul 20
Lettuce (leaf)	Mar 9 – Mar 16	Apr 13 – Apr 27	May 23
Peas	—	Apr 13 – May 11	Jun 7
Bush beans	—	May 14 – Jun 4	Jul 3
Carrot	—	Apr 22 – Jun 3	Jun 21
Beet	—	Apr 22 – Jun 3	Jun 11
Potato	—	Apr 22 – May 13	Jul 1
Kale	Mar 9 – Mar 23	Apr 20 – May 4	Jun 2
Broccoli	Mar 2 – Mar 16	Apr 13 – May 4	Jun 12
Cucumber	Apr 23 – Apr 30	May 21 – Jun 4	Jul 10
Summer squash and zucchini	Apr 23 – Apr 30	May 21 – Jun 4	Jul 5
Winter squash	Apr 23 – Apr 30	May 21 – Jun 4	Aug 9
Sweet corn	—	May 14 – Jun 4	Jul 13
Onion (from sets)	—	Apr 13 – May 4	Jul 12
Garlic	—	Sep 15 – Oct 13 (fall)	following summer
Spinach	—	Apr 13 – May 11	May 21
Basil	Apr 9 – Apr 23	May 21 – Jun 4	Jul 17

Plan all 65 crops for Roberts

Roberts'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
1920	May 15
1921	May 16
1922	Apr 30
1923	May 17
1924	May 30
1925	May 25
1926	May 22
1927	Jun 5
1928	May 14
1929	May 21
1930	May 30
1931	May 23
1932	May 28
1933	May 10
1934	May 15
1935	May 4
1936	Apr 26
1937	May 14
1938	May 12
1939	May 12
1940	May 17
1941	Apr 24
1942	May 16
1943	May 17
1944	May 6
1945	Jun 4
1946	May 16
1947	May 28
1948	May 8
1949	Apr 24
1950	May 2
1951	May 11
1952	Apr 24
1953	May 14
1954	May 8
1955	May 8
1956	May 16
1957	May 5
1958	May 9
1959	May 16
1960	May 12
1961	May 26
1962	Apr 23
1963	May 23
1964	Apr 15
1965	May 29
1966	May 10
1967	May 20
1968	May 5
1969	May 12
1970	Apr 23
1971	May 12
1972	Apr 26
1973	May 17
1974	May 6
1975	Apr 22
1976	May 8
1977	Apr 25
1978	May 2
1979	May 12
1980	Apr 24
1981	May 11
1982	Apr 27
1983	May 15
1984	May 2
1985	Apr 11
1986	May 21
1987	Apr 28
1988	May 17
1989	May 7
1990	May 11
1991	May 2
1992	May 6
1993	May 16
1994	May 10
1995	May 18
1996	May 14
1997	May 22
1998	Apr 29
1999	Apr 26
2000	May 20
2001	Apr 25
2002	May 22
2003	Apr 23
2004	May 16
2005	May 5
2006	May 23
2007	May 17
2008	Apr 30
2009	May 18
2010	May 10
2011	May 17
2012	Apr 24
2013	May 14
2014	May 18
2015	May 21
2016	May 16
2017	Apr 29
2018	Apr 29
2019	May 21
2020	May 13
2021	May 13
2022	May 5
2023	May 4
2024	Apr 25
2025	May 1

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1921	139
1922	161
1923	118
1924	101
1925	132
1926	125
1927	109
1928	131
1929	115
1930	120
1931	98
1932	123
1933	155
1934	134
1935	145
1936	158
1937	124
1938	160
1939	136
1940	117
1941	157
1942	131
1943	122
1944	155
1945	115
1946	131
1947	116
1948	146
1949	157
1950	144
1951	139
1952	161
1953	130
1954	136
1955	125
1956	126
1957	144
1958	144
1959	147
1960	143
1961	121
1962	149
1963	158
1964	173
1965	119
1966	138
1967	130
1968	151
1970	163
1971	152
1972	156
1973	125
1974	119
1975	162
1976	138
1977	160
1978	158
1979	147
1980	154
1981	139
1982	146
1983	130
1984	146
1985	173
1986	140
1987	157
1988	140
1989	141
1990	150
1991	140
1992	145
1993	145
1994	153
1995	125
1996	122
1997	144
1998	155
1999	147
2000	127
2001	152
2002	124
2003	158
2004	138
2005	154
2006	120
2007	120
2008	156
2009	134
2010	139
2011	120
2012	151
2013	152
2014	117
2015	145
2016	144
2017	163
2018	152
2019	143
2020	128
2021	156
2022	145
2023	160
2025	159

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

See the data as a table

Year	Growing-season temperature
1918	15.0 °C
1921	17.1 °C
1922	16.8 °C
1923	16.5 °C
1924	14.1 °C
1925	16.6 °C
1926	15.2 °C
1927	14.5 °C
1928	14.4 °C
1929	15.4 °C
1930	16.6 °C
1931	17.4 °C
1932	16.4 °C
1933	17.9 °C
1934	17.3 °C
1935	16.1 °C
1936	17.6 °C
1937	17.2 °C
1938	16.8 °C
1939	17.3 °C
1940	16.3 °C
1941	18.1 °C
1942	16.4 °C
1943	16.1 °C
1944	16.7 °C
1945	14.9 °C
1946	16.3 °C
1947	15.8 °C
1948	17.2 °C
1949	17.4 °C
1950	14.0 °C
1951	15.0 °C
1952	16.6 °C
1953	16.1 °C
1954	16.4 °C
1955	18.5 °C
1956	15.7 °C
1957	16.5 °C
1958	16.1 °C
1959	17.6 °C
1960	16.8 °C
1961	16.1 °C
1962	16.3 °C
1963	17.4 °C
1964	17.7 °C
1965	15.8 °C
1966	16.1 °C
1967	15.6 °C
1968	16.6 °C
1970	17.2 °C
1971	16.4 °C
1972	16.1 °C
1973	16.5 °C
1974	16.1 °C
1975	16.2 °C
1976	17.6 °C
1977	18.3 °C
1978	17.1 °C
1979	15.8 °C
1980	17.5 °C
1981	16.7 °C
1982	16.5 °C
1983	16.9 °C
1984	16.6 °C
1985	17.1 °C
1986	17.4 °C
1987	18.7 °C
1988	19.2 °C
1989	16.8 °C
1990	17.4 °C
1991	18.3 °C
1992	15.7 °C
1993	16.4 °C
1995	15.9 °C
1996	14.9 °C
1997	15.0 °C
1998	17.3 °C
1999	16.4 °C
2000	15.9 °C
2001	16.2 °C
2002	16.6 °C
2003	15.8 °C
2004	15.3 °C
2005	16.8 °C
2006	16.8 °C
2007	17.0 °C
2008	15.1 °C
2009	14.8 °C
2010	16.6 °C
2011	15.6 °C
2012	16.9 °C
2013	15.1 °C
2014	15.1 °C
2015	16.1 °C
2016	16.4 °C
2017	15.8 °C
2018	16.2 °C
2019	15.4 °C
2020	15.6 °C
2021	16.7 °C
2022	15.9 °C
2023	16.7 °C
2025	16.9 °C

What this means for you: Since 1920, Roberts's last spring frost has come about 1 day earlier per decade, on average. The frost-free season has grown by about 2 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from River Falls (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Hammond Baldwin River Falls New Richmond North Hudson Hudson