When to plant in Granby, MO
Planting dates worked out from Granby's own frost records, not a generic zone chart.
Safe to plant out
Apr 26
1 year in 10 has a later frost
Average last frost
Apr 14
about a 50% chance of a later one
Average first fall frost
Oct 21
1 year in 10 by Oct 9
Frost-free days
184
median, 1991–2020
Station used: Diamond 2w · 11.6 km away · station 326 m, town 343 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 1 – Mar 15 | Apr 26 – May 10 | Jun 20 |
| Sweet pepper | Feb 15 – Mar 1 | Apr 26 – May 10 | Jun 25 |
| Lettuce (leaf) | Feb 10 – Feb 17 | Mar 17 – Mar 31 | Apr 26 |
| Peas | — | Mar 4 – Apr 1 | Apr 28 |
| Bush beans | — | Apr 19 – May 10 | Jun 8 |
| Carrot | — | Mar 24 – May 5 | May 23 |
| Beet | — | Mar 17 – Apr 28 | May 6 |
| Potato | — | Mar 24 – Apr 14 | Jun 2 |
| Kale | Feb 3 – Feb 17 | Mar 17 – Mar 31 | Apr 29 |
| Broccoli | Feb 3 – Feb 17 | Mar 17 – Apr 7 | May 16 |
| Cucumber | Mar 29 – Apr 5 | Apr 26 – May 10 | Jun 15 |
| Summer squash and zucchini | Mar 29 – Apr 5 | Apr 26 – May 10 | Jun 10 |
| Winter squash | Mar 29 – Apr 5 | Apr 26 – May 10 | Jul 15 |
| Sweet corn | — | Apr 19 – May 10 | Jun 18 |
| Onion (from sets) | — | Mar 17 – Apr 7 | Jun 15 |
| Garlic | — | Oct 7 – Nov 4 (fall) | following summer |
| Spinach | — | Mar 4 – Apr 1 | Apr 11 |
| Basil | Mar 15 – Mar 29 | Apr 26 – May 10 | Jun 22 |
Granby'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 |
|---|---|
| 1993 | Apr 22 |
| 1994 | Apr 8 |
| 1995 | Apr 24 |
| 1996 | Apr 16 |
| 1997 | May 1 |
| 1998 | Apr 22 |
| 2006 | Apr 10 |
| 2008 | Apr 29 |
| 2009 | Apr 12 |
| 2010 | Mar 24 |
| 2012 | Mar 10 |
| 2013 | Apr 25 |
| 2014 | Apr 16 |
| 2015 | Apr 5 |
| 2016 | Apr 8 |
| 2017 | Apr 8 |
| 2018 | Apr 19 |
| 2019 | Apr 20 |
| 2020 | Apr 19 |
| 2021 | Apr 23 |
| 2022 | Apr 20 |
| 2023 | May 3 |
| 2024 | Apr 23 |
| 2025 | Apr 9 |
| 2026 | Mar 29 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1993 | 170 |
| 1994 | 200 |
| 1995 | 150 |
| 1996 | 184 |
| 1998 | 183 |
| 2008 | 181 |
| 2009 | 181 |
| 2010 | 218 |
| 2012 | 210 |
| 2013 | 179 |
| 2014 | 198 |
| 2015 | 207 |
| 2016 | 215 |
| 2017 | 199 |
| 2018 | 184 |
| 2019 | 174 |
| 2020 | 179 |
| 2021 | 194 |
| 2022 | 176 |
| 2023 | 179 |
| 2024 | 175 |
| 2025 | 204 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1993 | 20.2 °C |
| 1994 | 20.3 °C |
| 1995 | 20.4 °C |
| 1996 | 20.9 °C |
| 1997 | 19.4 °C |
| 2006 | 21.7 °C |
| 2008 | 19.9 °C |
| 2009 | 20.2 °C |
| 2010 | 23.1 °C |
| 2011 | 22.8 °C |
| 2012 | 23.5 °C |
| 2013 | 20.6 °C |
| 2014 | 20.9 °C |
| 2015 | 21.7 °C |
| 2016 | 21.8 °C |
| 2017 | 20.9 °C |
| 2018 | 21.7 °C |
| 2019 | 21.4 °C |
| 2020 | 20.4 °C |
| 2021 | 20.8 °C |
| 2022 | 21.7 °C |
| 2023 | 21.3 °C |
| 2024 | 21.7 °C |
| 2025 | 21.2 °C |
| 2026 | 23.1 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Diamond 2w (NOAA GHCN-Daily). Years with too many missing days are left out.