When to plant in Juneau, AK

Planting dates worked out from Juneau's own frost records, not a generic zone chart.

Safe to plant out

May 19

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

Sep 29

1 year in 10 by Sep 15

Frost-free days

140

median, 1991–2020

Station used: Juneau Ap · 9.8 km away · station 6 m, town 17 m. How we match towns to stations

This season

Plan your garden.

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Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Apr 13 – Apr 27	Jun 8 – Jun 22	Aug 2
Sweet pepper	Mar 30 – Apr 13	Jun 8 – Jun 22	Aug 7
Lettuce (leaf)	Mar 19 – Mar 26	Apr 23 – May 7	Jun 2
Peas	—	Apr 23 – May 21	Jun 17
Bush beans	—	May 28 – Jun 18	Jul 17
Carrot	—	May 6 – Jun 17	Jul 5
Beet	—	May 6 – Jun 17	Jun 25
Potato	—	May 6 – May 27	Jul 15
Kale	Mar 19 – Apr 2	Apr 30 – May 14	Jun 12
Broccoli	Mar 12 – Mar 26	Apr 23 – May 14	Jun 22
Cucumber	May 11 – May 18	Jun 8 – Jun 22	Jul 28
Summer squash and zucchini	May 11 – May 18	Jun 8 – Jun 22	Jul 23
Winter squash	May 11 – May 18	Jun 8 – Jun 22	Aug 27
Sweet corn	—	May 28 – Jun 18	Jul 27
Onion (from sets)	—	Apr 23 – May 14	Jul 22
Garlic	—	Sep 3 – Oct 1 (fall)	following summer
Spinach	—	Apr 23 – May 21	May 31
Basil	Apr 27 – May 11	Jun 8 – Jun 22	Aug 4

Plan all 65 crops for Juneau

Juneau'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
1941	May 5
1942	Apr 24
1949	May 27
1950	May 31
1951	May 5
1952	May 26
1953	May 5
1954	May 15
1955	Jun 7
1956	May 6
1957	May 10
1958	Apr 29
1959	May 12
1960	May 9
1961	May 10
1962	May 19
1963	May 6
1964	May 24
1965	Jun 13
1966	May 30
1967	May 19
1968	May 14
1969	May 13
1970	May 19
1971	Jun 3
1972	May 8
1973	May 23
1974	May 21
1975	May 24
1976	May 30
1977	May 13
1978	May 10
1979	May 15
1980	May 4
1981	Apr 27
1982	May 16
1983	Apr 24
1984	May 5
1985	Apr 29
1986	May 10
1987	Apr 23
1988	Apr 21
1989	May 17
1990	Apr 28
1991	May 12
1992	May 19
1993	Apr 18
1994	Apr 19
1995	Apr 20
1996	May 10
1997	May 2
1998	May 13
1999	May 11
2000	May 26
2001	May 5
2002	May 8
2003	May 17
2004	Apr 30
2005	Apr 18
2006	May 16
2007	May 18
2008	May 19
2009	May 19
2010	May 9
2011	May 16
2012	Apr 25
2013	May 21
2014	Apr 27
2015	May 5
2016	Apr 20
2017	Apr 23
2018	May 3
2019	May 13
2020	May 6
2021	Apr 26
2022	May 9
2023	May 5
2024	May 1

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1942	145
1949	131
1950	121
1951	142
1952	104
1953	154
1954	123
1955	91
1956	140
1957	129
1958	134
1959	144
1960	181
1961	138
1962	114
1963	150
1964	159
1965	92
1966	100
1967	132
1968	144
1969	102
1970	112
1971	114
1972	136
1973	113
1974	129
1975	136
1976	143
1977	135
1978	138
1979	153
1980	130
1981	127
1982	151
1983	154
1984	163
1985	141
1986	169
1987	167
1988	188
1989	148
1990	157
1991	155
1992	115
1993	198
1994	162
1995	177
1996	141
1997	154
1998	141
1999	140
2000	117
2001	172
2002	144
2003	121
2004	131
2005	166
2006	121
2007	138
2008	127
2009	131
2010	134
2011	138
2012	158
2013	126
2014	156
2015	139
2016	163
2017	161
2018	135
2019	136
2020	131
2021	160
2022	166
2023	168
2024	169

Each year's average temperature, April to SeptemberLong-term trend

See the data as a table

Year	Growing-season temperature
1941	11.0 °C
1942	11.0 °C
1949	9.3 °C
1950	9.8 °C
1951	10.4 °C
1952	9.3 °C
1953	10.7 °C
1954	9.3 °C
1955	8.8 °C
1956	9.3 °C
1957	10.6 °C
1958	10.6 °C
1959	9.5 °C
1960	9.9 °C
1961	9.8 °C
1962	9.5 °C
1963	10.1 °C
1964	9.5 °C
1965	9.0 °C
1966	9.3 °C
1967	9.7 °C
1968	9.9 °C
1969	10.0 °C
1970	8.7 °C
1971	9.7 °C
1972	9.1 °C
1973	9.1 °C
1974	9.5 °C
1975	9.9 °C
1976	10.1 °C
1977	10.9 °C
1978	10.6 °C
1979	10.7 °C
1980	10.6 °C
1981	10.6 °C
1982	10.2 °C
1983	10.7 °C
1984	10.6 °C
1985	9.4 °C
1986	10.0 °C
1987	10.7 °C
1988	10.0 °C
1989	11.7 °C
1990	11.5 °C
1991	10.5 °C
1992	10.2 °C
1993	11.9 °C
1994	11.2 °C
1995	11.5 °C
1996	10.5 °C
1997	11.8 °C
1998	10.9 °C
1999	10.2 °C
2000	9.9 °C
2001	10.2 °C
2002	9.7 °C
2003	10.4 °C
2004	11.7 °C
2005	11.6 °C
2006	10.1 °C
2007	10.3 °C
2008	9.4 °C
2009	10.7 °C
2010	10.9 °C
2011	9.9 °C
2012	9.8 °C
2013	10.9 °C
2014	11.2 °C
2015	11.6 °C
2016	12.1 °C
2017	10.9 °C
2018	11.2 °C
2019	12.0 °C
2020	10.8 °C
2021	11.0 °C
2022	11.2 °C
2023	11.4 °C
2024	10.9 °C

What this means for you: Since 1941, Juneau's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 3 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Juneau Ap (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Haines Skagway Sitka