When to plant in Hudson, NH
Planting dates worked out from Hudson's own frost records, not a generic zone chart.
Safe to plant out
May 17
1 year in 10 has a later frost
Average last frost
May 9
about a 50% chance of a later one
Average first fall frost
Oct 4
1 year in 10 by Sep 21
Frost-free days
151
median, 1991–2020
Station used: Hudson 1 Sse · 2.9 km away · station 56 m, town 46 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 22 – Apr 5 | May 17 – May 31 | Jul 11 |
| Sweet pepper | Mar 8 – Mar 22 | May 17 – May 31 | Jul 16 |
| Lettuce (leaf) | Mar 7 – Mar 14 | Apr 11 – Apr 25 | May 21 |
| Peas | — | Apr 8 – May 6 | Jun 2 |
| Bush beans | — | May 10 – May 31 | Jun 29 |
| Carrot | — | Apr 18 – May 30 | Jun 17 |
| Beet | — | Apr 18 – May 30 | Jun 7 |
| Potato | — | Apr 18 – May 9 | Jun 27 |
| Kale | Mar 4 – Mar 18 | Apr 15 – Apr 29 | May 28 |
| Broccoli | Feb 28 – Mar 14 | Apr 11 – May 2 | Jun 10 |
| Cucumber | Apr 19 – Apr 26 | May 17 – May 31 | Jul 6 |
| Summer squash and zucchini | Apr 19 – Apr 26 | May 17 – May 31 | Jul 1 |
| Winter squash | Apr 19 – Apr 26 | May 17 – May 31 | Aug 5 |
| Sweet corn | — | May 10 – May 31 | Jul 9 |
| Onion (from sets) | — | Apr 11 – May 2 | Jul 10 |
| Garlic | — | Sep 20 – Oct 18 (fall) | following summer |
| Spinach | — | Apr 8 – May 6 | May 16 |
| Basil | Apr 5 – Apr 19 | May 17 – May 31 | Jul 13 |
Hudson'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 |
|---|---|
| 1986 | May 10 |
| 1987 | May 14 |
| 1988 | May 9 |
| 1989 | Apr 30 |
| 1990 | Apr 20 |
| 1991 | Apr 26 |
| 1992 | May 26 |
| 1993 | Apr 30 |
| 1994 | May 28 |
| 1995 | May 9 |
| 1996 | May 15 |
| 1997 | May 8 |
| 1998 | May 14 |
| 1999 | May 14 |
| 2000 | May 16 |
| 2001 | May 8 |
| 2002 | May 22 |
| 2004 | May 5 |
| 2005 | May 13 |
| 2006 | Apr 30 |
| 2007 | May 14 |
| 2008 | May 2 |
| 2009 | Apr 30 |
| 2010 | May 11 |
| 2011 | May 6 |
| 2012 | Apr 30 |
| 2013 | May 15 |
| 2014 | May 7 |
| 2015 | May 2 |
| 2016 | Apr 28 |
| 2017 | May 9 |
| 2018 | Apr 30 |
| 2019 | Apr 29 |
| 2020 | May 14 |
| 2021 | Apr 27 |
| 2022 | May 10 |
| 2023 | May 18 |
| 2024 | Apr 27 |
| 2025 | Apr 21 |
| 2026 | May 4 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1986 | 149 |
| 1987 | 134 |
| 1988 | 150 |
| 1989 | 147 |
| 1990 | 151 |
| 1991 | 148 |
| 1992 | 121 |
| 1993 | 142 |
| 1994 | 135 |
| 1995 | 124 |
| 1996 | 141 |
| 1997 | 136 |
| 1998 | 132 |
| 1999 | 144 |
| 2000 | 135 |
| 2001 | 151 |
| 2002 | 139 |
| 2004 | 153 |
| 2005 | 160 |
| 2006 | 166 |
| 2007 | 153 |
| 2008 | 157 |
| 2009 | 163 |
| 2010 | 154 |
| 2011 | 152 |
| 2012 | 165 |
| 2013 | 158 |
| 2014 | 135 |
| 2015 | 147 |
| 2016 | 165 |
| 2017 | 156 |
| 2018 | 166 |
| 2019 | 158 |
| 2020 | 129 |
| 2021 | 179 |
| 2022 | 151 |
| 2023 | 158 |
| 2024 | 168 |
| 2025 | 171 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1986 | 15.6 °C |
| 1987 | 16.1 °C |
| 1988 | 16.5 °C |
| 1989 | 16.1 °C |
| 1990 | 16.1 °C |
| 1991 | 16.9 °C |
| 1992 | 15.1 °C |
| 1993 | 16.6 °C |
| 1994 | 16.5 °C |
| 1995 | 15.8 °C |
| 1996 | 16.1 °C |
| 1997 | 15.4 °C |
| 1998 | 16.9 °C |
| 1999 | 17.1 °C |
| 2000 | 15.3 °C |
| 2001 | 16.5 °C |
| 2002 | 17.0 °C |
| 2004 | 16.9 °C |
| 2005 | 17.2 °C |
| 2006 | 16.8 °C |
| 2007 | 16.5 °C |
| 2008 | 16.2 °C |
| 2009 | 16.1 °C |
| 2010 | 17.9 °C |
| 2011 | 17.4 °C |
| 2012 | 17.5 °C |
| 2013 | 16.9 °C |
| 2014 | 16.5 °C |
| 2015 | 17.4 °C |
| 2016 | 17.5 °C |
| 2017 | 17.0 °C |
| 2018 | 17.6 °C |
| 2019 | 16.9 °C |
| 2020 | 17.2 °C |
| 2021 | 17.6 °C |
| 2022 | 17.9 °C |
| 2023 | 17.3 °C |
| 2024 | 17.9 °C |
| 2025 | 17.5 °C |
| 2026 | 17.5 °C |
What this means for you: Since 1986, Hudson's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 7 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Hudson 1 Sse (NOAA GHCN-Daily). Years with too many missing days are left out.