When to plant in Avon, CO
Planting dates worked out from Avon's own frost records, not a generic zone chart.
Safe to plant out
Jun 27
1 year in 10 has a later frost
Average last frost
Jun 8
about a 50% chance of a later one
Average first fall frost
Sep 17
1 year in 10 by Aug 29
Frost-free days
110
median, 1991–2020
Station used: Beaver Ck Village · 3.6 km away · station 2591 m, town 2265 m. How we match towns to stations
The station sits 326 m higher than the town, so frost dates here may be off by a week or more. Check them against local experience.
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | May 2 – May 16 | Jun 27 – Jul 11 | Aug 21 |
| Sweet pepper | Apr 18 – May 2 | Jun 27 – Jul 11 | Aug 26 |
| Lettuce (leaf) | Apr 6 – Apr 13 | May 11 – May 25 | Jun 20 |
| Peas | — | May 4 – Jun 1 | Jun 28 |
| Bush beans | — | Jun 20 – Jul 11 | Aug 9 |
| Carrot | — | May 18 – Jun 29 | Jul 17 |
| Beet | — | May 17 – Jun 28 | Jul 6 |
| Potato | — | May 18 – Jun 8 | Jul 27 |
| Kale | Mar 30 – Apr 13 | May 11 – May 25 | Jun 23 |
| Broccoli | Mar 30 – Apr 13 | May 11 – Jun 1 | Jul 10 |
| Cucumber | May 30 – Jun 6 | Jun 27 – Jul 11 | Aug 16 |
| Summer squash and zucchini | May 30 – Jun 6 | Jun 27 – Jul 11 | Aug 11 |
| Winter squash Season likely too short |
May 30 – Jun 6 | Jun 27 – Jul 11 | Sep 15 |
| Sweet corn | — | Jun 20 – Jul 11 | Aug 19 |
| Onion (from sets) | — | May 11 – Jun 1 | Aug 9 |
| Garlic | — | Sep 3 – Oct 1 (fall) | following summer |
| Spinach | — | May 4 – Jun 1 | Jun 11 |
| Basil | May 16 – May 30 | Jun 27 – Jul 11 | Aug 23 |
Avon'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 |
|---|---|
| 2004 | Jul 1 |
| 2005 | Jul 4 |
| 2006 | Jun 17 |
| 2007 | Jun 13 |
| 2008 | Jun 13 |
| 2009 | May 9 |
| 2010 | May 30 |
| 2011 | Jun 20 |
| 2012 | Jun 11 |
| 2013 | May 30 |
| 2014 | Jun 9 |
| 2015 | May 30 |
| 2016 | May 28 |
| 2018 | May 4 |
| 2019 | Jun 22 |
| 2020 | Jun 9 |
| 2021 | May 25 |
| 2022 | May 31 |
| 2023 | May 8 |
| 2024 | May 24 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 2004 | 22 |
| 2005 | 57 |
| 2006 | 70 |
| 2007 | 102 |
| 2008 | 114 |
| 2009 | 134 |
| 2010 | 131 |
| 2011 | 107 |
| 2012 | 116 |
| 2013 | 116 |
| 2014 | 94 |
| 2015 | 125 |
| 2016 | 117 |
| 2018 | 143 |
| 2019 | 91 |
| 2020 | 90 |
| 2021 | 118 |
| 2022 | 135 |
| 2023 | 138 |
| 2024 | 146 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 2004 | 9.1 °C |
| 2005 | 9.7 °C |
| 2006 | 10.5 °C |
| 2007 | 12.4 °C |
| 2008 | 11.2 °C |
| 2009 | 11.2 °C |
| 2011 | 11.3 °C |
| 2012 | 12.9 °C |
| 2013 | 11.9 °C |
| 2014 | 11.3 °C |
| 2015 | 11.5 °C |
| 2016 | 11.5 °C |
| 2018 | 12.9 °C |
| 2019 | 11.5 °C |
| 2020 | 12.4 °C |
| 2021 | 12.5 °C |
| 2022 | 12.0 °C |
| 2023 | 11.3 °C |
| 2024 | 11.8 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Beaver Ck Village (NOAA GHCN-Daily). Years with too many missing days are left out.