When to plant in Campion, CO
Planting dates worked out from Campion's own frost records, not a generic zone chart.
Safe to plant out
May 15
1 year in 10 has a later frost
Average last frost
May 7
about a 50% chance of a later one
Average first fall frost
Oct 1
1 year in 10 by Sep 15
Frost-free days
146
median, 1991–2020
Station used: Loveland 2n · 9.5 km away · station 1534 m, town 1560 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 20 – Apr 3 | May 15 – May 29 | Jul 9 |
| Sweet pepper | Mar 6 – Mar 20 | May 15 – May 29 | Jul 14 |
| Lettuce (leaf) | Mar 5 – Mar 12 | Apr 9 – Apr 23 | May 19 |
| Peas | — | Mar 26 – Apr 23 | May 20 |
| Bush beans | — | May 8 – May 29 | Jun 27 |
| Carrot | — | Apr 16 – May 28 | Jun 15 |
| Beet | — | Apr 13 – May 25 | Jun 2 |
| Potato | — | Apr 16 – May 7 | Jun 25 |
| Kale | Feb 26 – Mar 12 | Apr 9 – Apr 23 | May 22 |
| Broccoli | Feb 26 – Mar 12 | Apr 9 – Apr 30 | Jun 8 |
| Cucumber | Apr 17 – Apr 24 | May 15 – May 29 | Jul 4 |
| Summer squash and zucchini | Apr 17 – Apr 24 | May 15 – May 29 | Jun 29 |
| Winter squash | Apr 17 – Apr 24 | May 15 – May 29 | Aug 3 |
| Sweet corn | — | May 8 – May 29 | Jul 7 |
| Onion (from sets) | — | Apr 9 – Apr 30 | Jul 8 |
| Garlic | — | Sep 17 – Oct 15 (fall) | following summer |
| Spinach | — | Mar 26 – Apr 23 | May 3 |
| Basil | Apr 3 – Apr 17 | May 15 – May 29 | Jul 11 |
Campion'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 |
|---|---|
| 1990 | May 17 |
| 1991 | May 3 |
| 1992 | Apr 25 |
| 1993 | May 11 |
| 1994 | Apr 30 |
| 1995 | May 4 |
| 1996 | Apr 29 |
| 1997 | May 9 |
| 1998 | Apr 29 |
| 2000 | May 13 |
| 2004 | May 2 |
| 2005 | May 4 |
| 2006 | May 11 |
| 2007 | May 9 |
| 2008 | May 14 |
| 2010 | May 14 |
| 2011 | May 6 |
| 2012 | May 9 |
| 2013 | May 6 |
| 2014 | May 15 |
| 2015 | May 12 |
| 2016 | May 3 |
| 2017 | May 21 |
| 2018 | Apr 28 |
| 2019 | May 22 |
| 2020 | May 5 |
| 2021 | May 12 |
| 2022 | May 23 |
| 2023 | Apr 25 |
| 2024 | May 22 |
| 2025 | May 4 |
| 2026 | May 7 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1990 | 142 |
| 1991 | 142 |
| 1992 | 164 |
| 1993 | 124 |
| 1994 | 144 |
| 1995 | 138 |
| 1996 | 149 |
| 1997 | 152 |
| 1998 | 159 |
| 2004 | 166 |
| 2005 | 147 |
| 2006 | 128 |
| 2007 | 151 |
| 2008 | 145 |
| 2010 | 157 |
| 2011 | 139 |
| 2012 | 148 |
| 2013 | 145 |
| 2014 | 120 |
| 2015 | 164 |
| 2016 | 154 |
| 2017 | 134 |
| 2018 | 164 |
| 2019 | 137 |
| 2020 | 126 |
| 2021 | 151 |
| 2022 | 138 |
| 2023 | 164 |
| 2024 | 155 |
| 2025 | 162 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1990 | 16.8 °C |
| 1991 | 16.6 °C |
| 1992 | 16.8 °C |
| 1993 | 15.7 °C |
| 1994 | 17.7 °C |
| 1995 | 15.8 °C |
| 1996 | 17.0 °C |
| 1997 | 16.6 °C |
| 1998 | 17.3 °C |
| 2000 | 18.4 °C |
| 2004 | 16.2 °C |
| 2005 | 16.8 °C |
| 2006 | 17.7 °C |
| 2007 | 17.5 °C |
| 2008 | 15.8 °C |
| 2010 | 16.5 °C |
| 2011 | 16.7 °C |
| 2012 | 18.4 °C |
| 2013 | 16.6 °C |
| 2014 | 16.6 °C |
| 2015 | 17.1 °C |
| 2016 | 17.1 °C |
| 2017 | 16.9 °C |
| 2018 | 17.6 °C |
| 2019 | 16.9 °C |
| 2020 | 17.3 °C |
| 2021 | 17.2 °C |
| 2022 | 18.0 °C |
| 2023 | 17.1 °C |
| 2024 | 18.4 °C |
| 2025 | 17.8 °C |
| 2026 | 19.2 °C |
What this means for you: Since 1990, Campion's last spring frost has come about 2 days later per decade, on average. The frost-free season has grown by about 1 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Loveland 2n (NOAA GHCN-Daily). Years with too many missing days are left out.