When to plant in Millville, UT
Planting dates worked out from Millville'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 14
about a 50% chance of a later one
Average first fall frost
Sep 26
1 year in 10 by Sep 11
Frost-free days
135
median, 1991–2020
Station used: Logan 5 Sw Exp Farm · 5.9 km away · station 1368 m, town 1407 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 12 – Mar 19 | Apr 16 – Apr 30 | May 26 |
| Peas | — | Apr 3 – May 1 | May 28 |
| Bush beans | — | May 24 – Jun 14 | Jul 13 |
| Carrot | — | Apr 23 – Jun 4 | Jun 22 |
| Beet | — | Apr 20 – Jun 1 | Jun 9 |
| Potato | — | Apr 23 – May 14 | Jul 2 |
| Kale | Mar 5 – Mar 19 | Apr 16 – Apr 30 | May 29 |
| Broccoli | Mar 5 – Mar 19 | Apr 16 – May 7 | Jun 15 |
| 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 16 – May 7 | Jul 15 |
| Garlic | — | Sep 12 – Oct 10 (fall) | following summer |
| Spinach | — | Apr 3 – May 1 | May 11 |
| Basil | Apr 19 – May 3 | May 31 – Jun 14 | Jul 27 |
Millville'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 |
|---|---|
| 1970 | May 31 |
| 1971 | Apr 27 |
| 1972 | May 11 |
| 1974 | Jun 8 |
| 1975 | May 29 |
| 1976 | Jun 14 |
| 1977 | May 20 |
| 1978 | Jun 1 |
| 1979 | Jun 1 |
| 1980 | May 17 |
| 1981 | Jun 14 |
| 1982 | Jun 9 |
| 1983 | May 14 |
| 1984 | May 9 |
| 1985 | May 13 |
| 1986 | May 23 |
| 1987 | May 4 |
| 1988 | May 4 |
| 1989 | Jun 21 |
| 1990 | Jun 2 |
| 1991 | May 19 |
| 1992 | May 3 |
| 1993 | May 9 |
| 1994 | Apr 30 |
| 1995 | Jun 7 |
| 1996 | May 24 |
| 1997 | May 3 |
| 1998 | Apr 27 |
| 1999 | May 17 |
| 2000 | Jun 1 |
| 2003 | May 20 |
| 2004 | May 30 |
| 2005 | Apr 22 |
| 2006 | May 11 |
| 2007 | May 29 |
| 2008 | May 13 |
| 2009 | May 10 |
| 2010 | Jun 17 |
| 2011 | May 30 |
| 2012 | May 11 |
| 2013 | May 4 |
| 2014 | May 13 |
| 2015 | Apr 17 |
| 2016 | May 11 |
| 2017 | May 18 |
| 2018 | May 2 |
| 2019 | May 3 |
| 2020 | May 8 |
| 2021 | May 10 |
| 2022 | Jun 15 |
| 2023 | Apr 26 |
| 2024 | Jun 18 |
| 2025 | May 19 |
| 2026 | May 19 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1970 | 106 |
| 1971 | 140 |
| 1972 | 124 |
| 1974 | 96 |
| 1975 | 96 |
| 1977 | 120 |
| 1978 | 99 |
| 1979 | 124 |
| 1980 | 127 |
| 1981 | 103 |
| 1983 | 128 |
| 1984 | 135 |
| 1985 | 129 |
| 1986 | 121 |
| 1987 | 135 |
| 1988 | 129 |
| 1989 | 83 |
| 1990 | 122 |
| 1991 | 118 |
| 1992 | 126 |
| 1993 | 127 |
| 1994 | 137 |
| 1995 | 105 |
| 1996 | 104 |
| 1997 | 147 |
| 1998 | 160 |
| 1999 | 132 |
| 2000 | 113 |
| 2004 | 107 |
| 2006 | 133 |
| 2007 | 119 |
| 2008 | 161 |
| 2009 | 143 |
| 2010 | 81 |
| 2011 | 131 |
| 2012 | 145 |
| 2013 | 153 |
| 2014 | 141 |
| 2015 | 177 |
| 2016 | 147 |
| 2017 | 127 |
| 2018 | 145 |
| 2019 | 149 |
| 2020 | 159 |
| 2021 | 133 |
| 2022 | 121 |
| 2023 | 169 |
| 2024 | 122 |
| 2025 | 145 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1970 | 15.1 °C |
| 1971 | 15.3 °C |
| 1972 | 15.3 °C |
| 1974 | 15.6 °C |
| 1975 | 13.7 °C |
| 1976 | 14.9 °C |
| 1977 | 15.6 °C |
| 1978 | 14.5 °C |
| 1979 | 15.5 °C |
| 1980 | 15.1 °C |
| 1981 | 15.9 °C |
| 1982 | 14.0 °C |
| 1983 | 14.9 °C |
| 1984 | 14.8 °C |
| 1985 | 15.5 °C |
| 1986 | 15.3 °C |
| 1987 | 15.6 °C |
| 1988 | 16.0 °C |
| 1989 | 15.7 °C |
| 1990 | 16.1 °C |
| 1991 | 14.9 °C |
| 1992 | 16.4 °C |
| 1993 | 14.1 °C |
| 1995 | 14.7 °C |
| 1996 | 15.4 °C |
| 1997 | 15.5 °C |
| 1998 | 15.8 °C |
| 1999 | 14.7 °C |
| 2000 | 16.4 °C |
| 2004 | 15.4 °C |
| 2006 | 16.0 °C |
| 2007 | 16.9 °C |
| 2008 | 15.7 °C |
| 2009 | 15.6 °C |
| 2010 | 14.8 °C |
| 2011 | 15.2 °C |
| 2012 | 16.9 °C |
| 2013 | 16.7 °C |
| 2014 | 15.8 °C |
| 2015 | 16.4 °C |
| 2016 | 16.4 °C |
| 2017 | 16.3 °C |
| 2018 | 16.9 °C |
| 2019 | 15.6 °C |
| 2020 | 16.0 °C |
| 2021 | 17.0 °C |
| 2022 | 16.4 °C |
| 2023 | 16.0 °C |
| 2024 | 16.6 °C |
| 2025 | 17.1 °C |
| 2026 | 16.9 °C |
What this means for you: Since 1970, Millville's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 6 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Logan 5 Sw Exp Farm (NOAA GHCN-Daily). Years with too many missing days are left out.