When to plant in Upper Bear Creek, CO
Planting dates worked out from Upper Bear Creek's own frost records, not a generic zone chart.
Safe to plant out
Jun 22
1 year in 10 has a later frost
Average last frost
Jun 6
about a 50% chance of a later one
Average first fall frost
Sep 14
1 year in 10 by Sep 4
Frost-free days
95
median, 1991–2020
Station used: Corral Creek Colorado · 4.4 km away · station 2502 m, town 2360 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 27 – May 11 | Jun 22 – Jul 6 | Aug 16 |
| Sweet pepper | Apr 13 – Apr 27 | Jun 22 – Jul 6 | Aug 21 |
| Lettuce (leaf) | Apr 4 – Apr 11 | May 9 – May 23 | Jun 18 |
| Peas | — | May 2 – May 30 | Jun 26 |
| Bush beans | — | Jun 15 – Jul 6 | Aug 4 |
| Carrot | — | May 16 – Jun 27 | Jul 15 |
| Beet | — | May 15 – Jun 26 | Jul 4 |
| Potato | — | May 16 – Jun 6 | Jul 25 |
| Kale | Mar 28 – Apr 11 | May 9 – May 23 | Jun 21 |
| Broccoli | Mar 28 – Apr 11 | May 9 – May 30 | Jul 8 |
| Cucumber | May 25 – Jun 1 | Jun 22 – Jul 6 | Aug 11 |
| Summer squash and zucchini | May 25 – Jun 1 | Jun 22 – Jul 6 | Aug 6 |
| Winter squash Season likely too short |
May 25 – Jun 1 | Jun 22 – Jul 6 | Sep 10 |
| Sweet corn | — | Jun 15 – Jul 6 | Aug 14 |
| Onion (from sets) | — | May 9 – May 30 | Aug 7 |
| Garlic | — | Aug 31 – Sep 28 (fall) | following summer |
| Spinach | — | May 2 – May 30 | Jun 9 |
| Basil | May 11 – May 25 | Jun 22 – Jul 6 | Aug 18 |
Upper Bear Creek'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 |
|---|---|
| 2002 | May 25 |
| 2003 | Jun 26 |
| 2004 | Jun 22 |
| 2005 | Jun 11 |
| 2006 | May 29 |
| 2007 | Jun 8 |
| 2008 | Jun 13 |
| 2009 | Jun 8 |
| 2010 | Jun 14 |
| 2011 | May 26 |
| 2012 | Jun 11 |
| 2013 | Jun 2 |
| 2014 | Jun 15 |
| 2015 | May 30 |
| 2016 | May 26 |
| 2017 | May 29 |
| 2018 | May 4 |
| 2019 | Jun 23 |
| 2020 | Jun 9 |
| 2021 | Jun 1 |
| 2022 | Jun 2 |
| 2023 | May 9 |
| 2024 | May 24 |
| 2025 | May 22 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 2002 | 116 |
| 2003 | 78 |
| 2004 | 84 |
| 2005 | 93 |
| 2006 | 95 |
| 2007 | 94 |
| 2008 | 82 |
| 2009 | 104 |
| 2010 | 80 |
| 2011 | 100 |
| 2012 | 113 |
| 2013 | 117 |
| 2014 | 87 |
| 2015 | 111 |
| 2016 | 105 |
| 2017 | 113 |
| 2018 | 139 |
| 2019 | 89 |
| 2020 | 90 |
| 2021 | 111 |
| 2022 | 100 |
| 2023 | 129 |
| 2024 | 129 |
| 2025 | 118 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 2002 | 12.8 °C |
| 2003 | 12.2 °C |
| 2004 | 10.9 °C |
| 2005 | 12.1 °C |
| 2006 | 12.5 °C |
| 2007 | 12.4 °C |
| 2008 | 11.4 °C |
| 2009 | 11.1 °C |
| 2010 | 12.1 °C |
| 2011 | 12.0 °C |
| 2012 | 13.3 °C |
| 2013 | 11.8 °C |
| 2014 | 11.5 °C |
| 2015 | 11.8 °C |
| 2016 | 12.1 °C |
| 2017 | 11.8 °C |
| 2018 | 12.8 °C |
| 2019 | 12.0 °C |
| 2020 | 12.8 °C |
| 2021 | 12.2 °C |
| 2022 | 12.4 °C |
| 2023 | 11.7 °C |
| 2024 | 12.8 °C |
| 2025 | 12.4 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Corral Creek Colorado (NOAA GHCN-Daily). Years with too many missing days are left out.