When to plant in Hayward, WI
Planting dates worked out from Hayward's own frost records, not a generic zone chart.
Safe to plant out
Jun 8
1 year in 10 has a later frost
Average last frost
May 27
about a 50% chance of a later one
Average first fall frost
Sep 15
1 year in 10 by Sep 1
Frost-free days
110
median, 1991–2020
Station used: Hayward Rs · 2.3 km away · station 366 m, town 363 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 | Apr 13 – Apr 27 | Jun 8 – Jun 22 | Aug 2 |
| Sweet pepper | Mar 30 – Apr 13 | Jun 8 – Jun 22 | Aug 7 |
| Lettuce (leaf) | Mar 25 – Apr 1 | Apr 29 – May 13 | Jun 8 |
| Peas | — | Apr 15 – May 13 | Jun 9 |
| Bush beans | — | Jun 1 – Jun 22 | Jul 21 |
| Carrot | — | May 6 – Jun 17 | Jul 5 |
| Beet | — | Apr 29 – Jun 10 | Jun 18 |
| Potato | — | May 6 – May 27 | Jul 15 |
| Kale | Mar 18 – Apr 1 | Apr 29 – May 13 | Jun 11 |
| Broccoli | Mar 18 – Apr 1 | Apr 29 – May 20 | Jun 28 |
| Cucumber | May 11 – May 18 | Jun 8 – Jun 22 | Jul 28 |
| Summer squash and zucchini | May 11 – May 18 | Jun 8 – Jun 22 | Jul 23 |
| Winter squash | May 11 – May 18 | Jun 8 – Jun 22 | Aug 27 |
| Sweet corn | — | Jun 1 – Jun 22 | Jul 31 |
| Onion (from sets) | — | Apr 29 – May 20 | Jul 28 |
| Garlic | — | Sep 1 – Sep 29 (fall) | following summer |
| Spinach | — | Apr 15 – May 13 | May 23 |
| Basil | Apr 27 – May 11 | Jun 8 – Jun 22 | Aug 4 |
Hayward'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 |
|---|---|
| 1893 | May 28 |
| 1895 | May 21 |
| 1897 | Jun 6 |
| 1898 | May 13 |
| 1899 | May 20 |
| 1900 | May 19 |
| 1901 | Jun 1 |
| 1902 | Jun 21 |
| 1903 | Jun 12 |
| 1904 | May 17 |
| 1906 | May 10 |
| 1907 | May 27 |
| 1908 | Jun 15 |
| 1909 | May 19 |
| 1910 | Jun 7 |
| 1911 | Jun 28 |
| 1913 | Jun 14 |
| 1914 | May 16 |
| 1915 | Jun 17 |
| 1916 | Jun 21 |
| 1917 | Jun 16 |
| 1918 | Jun 25 |
| 1921 | May 18 |
| 1923 | May 21 |
| 1934 | May 26 |
| 1939 | May 15 |
| 1940 | May 25 |
| 1998 | Jun 8 |
| 1999 | May 26 |
| 2000 | Jun 5 |
| 2001 | May 30 |
| 2002 | May 21 |
| 2003 | Jun 1 |
| 2004 | Jun 19 |
| 2005 | May 16 |
| 2006 | Jun 12 |
| 2007 | May 28 |
| 2008 | May 28 |
| 2009 | Jun 6 |
| 2010 | May 15 |
| 2011 | May 27 |
| 2012 | Jun 1 |
| 2013 | May 24 |
| 2014 | May 17 |
| 2015 | May 31 |
| 2017 | May 7 |
| 2018 | May 12 |
| 2019 | May 20 |
| 2020 | May 13 |
| 2021 | May 29 |
| 2022 | May 4 |
| 2023 | May 20 |
| 2024 | May 10 |
| 2025 | May 23 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1893 | 92 |
| 1895 | 131 |
| 1898 | 118 |
| 1900 | 120 |
| 1901 | 123 |
| 1902 | 82 |
| 1903 | 84 |
| 1913 | 39 |
| 1915 | 69 |
| 1916 | 86 |
| 1917 | 69 |
| 1918 | 70 |
| 1921 | 135 |
| 1934 | 85 |
| 1940 | 89 |
| 1998 | 91 |
| 1999 | 107 |
| 2000 | 101 |
| 2001 | 116 |
| 2002 | 124 |
| 2003 | 110 |
| 2004 | 54 |
| 2005 | 98 |
| 2006 | 88 |
| 2007 | 106 |
| 2008 | 103 |
| 2009 | 85 |
| 2010 | 112 |
| 2011 | 110 |
| 2012 | 108 |
| 2013 | 114 |
| 2014 | 117 |
| 2015 | 121 |
| 2017 | 155 |
| 2018 | 139 |
| 2019 | 145 |
| 2020 | 119 |
| 2021 | 138 |
| 2022 | 145 |
| 2023 | 139 |
| 2025 | 137 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1893 | 14.0 °C |
| 1898 | 15.9 °C |
| 1899 | 15.0 °C |
| 1900 | 16.7 °C |
| 1901 | 16.0 °C |
| 1902 | 14.2 °C |
| 1903 | 13.5 °C |
| 1907 | 11.4 °C |
| 1913 | 15.3 °C |
| 1915 | 13.6 °C |
| 1916 | 14.2 °C |
| 1917 | 12.9 °C |
| 1918 | 13.9 °C |
| 1921 | 16.6 °C |
| 1922 | 15.3 °C |
| 1923 | 14.5 °C |
| 1940 | 14.2 °C |
| 1998 | 16.1 °C |
| 1999 | 15.8 °C |
| 2001 | 15.5 °C |
| 2002 | 15.4 °C |
| 2003 | 15.0 °C |
| 2004 | 14.3 °C |
| 2005 | 17.2 °C |
| 2006 | 16.3 °C |
| 2007 | 16.3 °C |
| 2008 | 14.8 °C |
| 2009 | 14.5 °C |
| 2010 | 16.4 °C |
| 2011 | 15.2 °C |
| 2012 | 16.1 °C |
| 2013 | 15.1 °C |
| 2014 | 15.1 °C |
| 2015 | 16.2 °C |
| 2017 | 15.8 °C |
| 2018 | 16.2 °C |
| 2019 | 15.5 °C |
| 2020 | 15.8 °C |
| 2021 | 16.6 °C |
| 2022 | 15.8 °C |
| 2023 | 16.6 °C |
| 2024 | 16.6 °C |
| 2025 | 16.5 °C |
What this means for you: Since 1893, Hayward's last spring frost has stayed at about the same time of year. 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 Hayward Rs (NOAA GHCN-Daily). Years with too many missing days are left out.