When to plant in Claresholm, AB
Planting dates worked out from Claresholm's own frost records, not a generic zone chart.
Safe to plant out
May 31
1 year in 10 has a later frost
Average last frost
May 22
about a 50% chance of a later one
Average first fall frost
Sep 14
1 year in 10 by Sep 3
Frost-free days
116
median, 1991–2020
Station used: Claresholm · 5.0 km away · station 1009 m, town 1034 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 5 – Apr 19 | May 31 – Jun 14 | Jul 25 |
| Sweet pepper | Mar 22 – Apr 5 | May 31 – Jun 14 | Jul 30 |
| Lettuce (leaf) | Mar 21 – Mar 28 | Apr 25 – May 9 | Jun 4 |
| Peas | — | Apr 25 – May 23 | Jun 19 |
| Bush beans | — | May 24 – Jun 14 | Jul 13 |
| Carrot | — | May 5 – Jun 16 | Jul 4 |
| Beet | — | May 5 – Jun 16 | Jun 24 |
| Potato | — | May 5 – May 26 | Jul 14 |
| Kale | Mar 21 – Apr 4 | May 2 – May 16 | Jun 14 |
| Broccoli | Mar 14 – Mar 28 | Apr 25 – May 16 | Jun 24 |
| Cucumber | May 3 – May 10 | May 31 – Jun 14 | Jul 20 |
| Summer squash and zucchini | May 3 – May 10 | May 31 – Jun 14 | Jul 15 |
| Winter squash | May 3 – May 10 | May 31 – Jun 14 | Aug 19 |
| Sweet corn | — | May 24 – Jun 14 | Jul 23 |
| Onion (from sets) | — | Apr 25 – May 16 | Jul 24 |
| Garlic | — | Aug 31 – Sep 28 (fall) | following summer |
| Spinach | — | Apr 25 – May 23 | Jun 2 |
| Basil | Apr 19 – May 3 | May 31 – Jun 14 | Jul 27 |
Claresholm'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 |
|---|---|
| 1952 | May 5 |
| 1953 | May 17 |
| 1954 | May 7 |
| 1955 | May 25 |
| 1956 | May 13 |
| 1957 | May 10 |
| 1958 | Apr 28 |
| 1996 | May 25 |
| 1997 | May 21 |
| 1999 | Jun 8 |
| 2000 | Jun 1 |
| 2001 | May 21 |
| 2002 | May 25 |
| 2003 | May 19 |
| 2004 | May 24 |
| 2005 | May 12 |
| 2006 | May 14 |
| 2007 | May 26 |
| 2008 | May 13 |
| 2009 | Jun 10 |
| 2010 | May 24 |
| 2011 | May 30 |
| 2012 | May 26 |
| 2013 | May 8 |
| 2014 | May 14 |
| 2015 | May 20 |
| 2016 | May 28 |
| 2017 | May 15 |
| 2018 | May 12 |
| 2019 | May 20 |
| 2020 | May 9 |
| 2021 | May 24 |
| 2022 | May 23 |
| 2023 | Apr 29 |
| 2024 | Jun 19 |
| 2025 | May 7 |
| 2026 | May 22 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1952 | 151 |
| 1953 | 125 |
| 1954 | 135 |
| 1955 | 107 |
| 1956 | 113 |
| 1957 | 130 |
| 1996 | 117 |
| 1997 | 120 |
| 1999 | 84 |
| 2000 | 101 |
| 2001 | 107 |
| 2002 | 117 |
| 2003 | 119 |
| 2004 | 118 |
| 2005 | 123 |
| 2006 | 126 |
| 2007 | 76 |
| 2008 | 111 |
| 2009 | 92 |
| 2010 | 116 |
| 2011 | 113 |
| 2012 | 103 |
| 2013 | 144 |
| 2014 | 116 |
| 2015 | 125 |
| 2016 | 106 |
| 2017 | 123 |
| 2018 | 115 |
| 2019 | 129 |
| 2020 | 121 |
| 2021 | 114 |
| 2022 | 120 |
| 2023 | 152 |
| 2024 | 93 |
| 2025 | 151 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1952 | 13.3 °C |
| 1953 | 11.9 °C |
| 1954 | 10.9 °C |
| 1955 | 12.1 °C |
| 1956 | 12.9 °C |
| 1957 | 13.1 °C |
| 1996 | 12.2 °C |
| 1997 | 12.7 °C |
| 1998 | 14.5 °C |
| 1999 | 11.4 °C |
| 2000 | 12.4 °C |
| 2001 | 13.5 °C |
| 2002 | 11.3 °C |
| 2003 | 13.1 °C |
| 2004 | 12.2 °C |
| 2005 | 12.1 °C |
| 2006 | 12.7 °C |
| 2007 | 12.6 °C |
| 2008 | 11.9 °C |
| 2009 | 12.4 °C |
| 2010 | 11.1 °C |
| 2011 | 12.0 °C |
| 2012 | 13.0 °C |
| 2013 | 12.7 °C |
| 2014 | 12.3 °C |
| 2015 | 12.7 °C |
| 2016 | 13.2 °C |
| 2017 | 13.7 °C |
| 2018 | 12.2 °C |
| 2019 | 12.3 °C |
| 2020 | 12.6 °C |
| 2021 | 13.8 °C |
| 2022 | 13.4 °C |
| 2023 | 14.5 °C |
| 2024 | 13.6 °C |
| 2025 | 14.1 °C |
| 2026 | 13.1 °C |
What this means for you: Since 1952, Claresholm's last spring frost has come about 1 day later per decade, on average. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Claresholm (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.