When to plant in Mount Horeb, WI
Planting dates worked out from Mount Horeb's own frost records, not a generic zone chart.
Safe to plant out
May 5
1 year in 10 has a later frost
Average last frost
Apr 23
about a 50% chance of a later one
Average first fall frost
Oct 18
1 year in 10 by Oct 4
Frost-free days
179
median, 1991–2020
Station used: Dodgeville Wisconsin · 23.6 km away · station 384 m, town 380 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 10 – Mar 24 | May 5 – May 19 | Jun 29 |
| Sweet pepper | Feb 24 – Mar 10 | May 5 – May 19 | Jul 4 |
| Lettuce (leaf) | Feb 27 – Mar 6 | Apr 3 – Apr 17 | May 13 |
| Peas | — | Apr 3 – May 1 | May 28 |
| Bush beans | — | Apr 28 – May 19 | Jun 17 |
| Carrot | — | Apr 13 – May 25 | Jun 12 |
| Beet | — | Apr 13 – May 25 | Jun 2 |
| Potato | — | Apr 13 – May 4 | Jun 22 |
| Kale | Feb 27 – Mar 13 | Apr 10 – Apr 24 | May 23 |
| Broccoli | Feb 20 – Mar 6 | Apr 3 – Apr 24 | Jun 2 |
| Cucumber | Apr 7 – Apr 14 | May 5 – May 19 | Jun 24 |
| Summer squash and zucchini | Apr 7 – Apr 14 | May 5 – May 19 | Jun 19 |
| Winter squash | Apr 7 – Apr 14 | May 5 – May 19 | Jul 24 |
| Sweet corn | — | Apr 28 – May 19 | Jun 27 |
| Onion (from sets) | — | Apr 3 – Apr 24 | Jul 2 |
| Garlic | — | Oct 2 – Oct 30 (fall) | following summer |
| Spinach | — | Apr 3 – May 1 | May 11 |
| Basil | Mar 24 – Apr 7 | May 5 – May 19 | Jul 1 |
Mount Horeb'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 |
|---|---|
| 1998 | Apr 17 |
| 1999 | Mar 27 |
| 2003 | Apr 13 |
| 2004 | May 3 |
| 2006 | Apr 8 |
| 2007 | Apr 13 |
| 2008 | Apr 30 |
| 2009 | Apr 12 |
| 2010 | Apr 9 |
| 2011 | May 4 |
| 2012 | Apr 27 |
| 2013 | May 3 |
| 2014 | Apr 19 |
| 2015 | Apr 23 |
| 2016 | May 15 |
| 2017 | Apr 28 |
| 2018 | Apr 29 |
| 2019 | Apr 28 |
| 2020 | May 9 |
| 2021 | Apr 25 |
| 2022 | Apr 27 |
| 2023 | Apr 24 |
| 2024 | Apr 21 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1998 | 199 |
| 1999 | 190 |
| 2003 | 169 |
| 2006 | 185 |
| 2007 | 204 |
| 2008 | 179 |
| 2009 | 179 |
| 2011 | 169 |
| 2012 | 165 |
| 2013 | 169 |
| 2014 | 194 |
| 2015 | 176 |
| 2016 | 180 |
| 2017 | 181 |
| 2018 | 165 |
| 2019 | 166 |
| 2020 | 147 |
| 2021 | 188 |
| 2022 | 163 |
| 2023 | 187 |
| 2024 | 177 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1997 | 16.0 °C |
| 1998 | 18.4 °C |
| 1999 | 17.6 °C |
| 2001 | 17.8 °C |
| 2002 | 18.4 °C |
| 2003 | 17.3 °C |
| 2006 | 17.5 °C |
| 2007 | 18.0 °C |
| 2008 | 16.9 °C |
| 2009 | 16.7 °C |
| 2011 | 17.4 °C |
| 2012 | 18.9 °C |
| 2013 | 17.0 °C |
| 2014 | 17.1 °C |
| 2015 | 17.9 °C |
| 2016 | 18.1 °C |
| 2017 | 17.6 °C |
| 2018 | 17.8 °C |
| 2019 | 17.6 °C |
| 2020 | 17.1 °C |
| 2021 | 18.5 °C |
| 2022 | 17.4 °C |
| 2023 | 18.4 °C |
| 2024 | 18.4 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Dodgeville Wisconsin (NOAA GHCN-Daily). Years with too many missing days are left out.