When to plant in Altamont, TN
Planting dates worked out from Altamont's own frost records, not a generic zone chart.
Safe to plant out
May 10
1 year in 10 has a later frost
Average last frost
Apr 24
about a 50% chance of a later one
Average first fall frost
Oct 14
1 year in 10 by Oct 2
Frost-free days
174
median, 1991–2020
Station used: Coalmont · 7.1 km away · station 566 m, town 565 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 15 – Mar 29 | May 10 – May 24 | Jul 4 |
| Sweet pepper | Mar 1 – Mar 15 | May 10 – May 24 | Jul 9 |
| Lettuce (leaf) | Feb 20 – Feb 27 | Mar 27 – Apr 10 | May 6 |
| Peas | — | Mar 13 – Apr 10 | May 7 |
| Bush beans | — | May 3 – May 24 | Jun 22 |
| Carrot | — | Apr 3 – May 15 | Jun 2 |
| Beet | — | Mar 27 – May 8 | May 16 |
| Potato | — | Apr 3 – Apr 24 | Jun 12 |
| Kale | Feb 13 – Feb 27 | Mar 27 – Apr 10 | May 9 |
| Broccoli | Feb 13 – Feb 27 | Mar 27 – Apr 17 | May 26 |
| Cucumber | Apr 12 – Apr 19 | May 10 – May 24 | Jun 29 |
| Summer squash and zucchini | Apr 12 – Apr 19 | May 10 – May 24 | Jun 24 |
| Winter squash | Apr 12 – Apr 19 | May 10 – May 24 | Jul 29 |
| Sweet corn | — | May 3 – May 24 | Jul 2 |
| Onion (from sets) | — | Mar 27 – Apr 17 | Jun 25 |
| Garlic | — | Sep 30 – Oct 28 (fall) | following summer |
| Spinach | — | Mar 13 – Apr 10 | Apr 20 |
| Basil | Mar 29 – Apr 12 | May 10 – May 24 | Jul 6 |
Altamont'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 |
|---|---|
| 2000 | Apr 11 |
| 2001 | Apr 26 |
| 2002 | May 22 |
| 2003 | Apr 23 |
| 2004 | May 4 |
| 2005 | May 4 |
| 2006 | Apr 11 |
| 2007 | Apr 13 |
| 2008 | Apr 30 |
| 2009 | Apr 22 |
| 2010 | Apr 10 |
| 2011 | May 5 |
| 2012 | Apr 14 |
| 2013 | May 13 |
| 2014 | Apr 17 |
| 2015 | Apr 6 |
| 2016 | Apr 10 |
| 2018 | Apr 30 |
| 2019 | Apr 21 |
| 2020 | May 10 |
| 2021 | Apr 23 |
| 2022 | Apr 20 |
| 2023 | May 5 |
| 2024 | Apr 23 |
| 2025 | Apr 14 |
| 2026 | Mar 19 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 2000 | 179 |
| 2001 | 152 |
| 2002 | 148 |
| 2003 | 161 |
| 2004 | 185 |
| 2005 | 172 |
| 2006 | 184 |
| 2007 | 198 |
| 2008 | 171 |
| 2009 | 178 |
| 2010 | 176 |
| 2011 | 149 |
| 2012 | 177 |
| 2013 | 163 |
| 2014 | 170 |
| 2015 | 193 |
| 2016 | 195 |
| 2018 | 173 |
| 2019 | 174 |
| 2020 | 159 |
| 2021 | 195 |
| 2022 | 171 |
| 2023 | 155 |
| 2024 | 174 |
| 2025 | 200 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 2000 | 19.3 °C |
| 2001 | 18.9 °C |
| 2002 | 20.0 °C |
| 2003 | 19.0 °C |
| 2004 | 19.0 °C |
| 2005 | 19.3 °C |
| 2006 | 19.8 °C |
| 2007 | 19.8 °C |
| 2008 | 18.9 °C |
| 2009 | 18.9 °C |
| 2010 | 20.8 °C |
| 2011 | 19.6 °C |
| 2012 | 19.7 °C |
| 2013 | 18.7 °C |
| 2014 | 19.0 °C |
| 2015 | 19.6 °C |
| 2016 | 20.5 °C |
| 2018 | 19.7 °C |
| 2019 | 19.9 °C |
| 2020 | 18.5 °C |
| 2021 | 18.6 °C |
| 2022 | 19.3 °C |
| 2023 | 18.6 °C |
| 2024 | 20.4 °C |
| 2025 | 20.2 °C |
| 2026 | 20.9 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Coalmont (NOAA GHCN-Daily). Years with too many missing days are left out.