When to plant in Mount Pearl, NL
Planting dates worked out from Mount Pearl's own frost records, not a generic zone chart.
Safe to plant out
Jun 9
1 year in 10 has a later frost
Average last frost
May 27
about a 50% chance of a later one
Average first fall frost
Oct 18
1 year in 10 by Oct 7
Frost-free days
142
median, 1991–2020
Station used: St John's A · 12.1 km away · station 140 m, town 109 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 27 – May 11 | Jun 22 – Jul 6 | Aug 16 |
| Sweet pepper | Apr 13 – Apr 27 | Jun 22 – Jul 6 | Aug 21 |
| Lettuce (leaf) | Apr 10 – Apr 17 | May 15 – May 29 | Jun 24 |
| Peas | — | May 15 – Jun 12 | Jul 9 |
| Bush beans | — | Jun 17 – Jul 8 | Aug 6 |
| Carrot | — | May 30 – Jul 11 | Jul 29 |
| Beet | — | May 30 – Jul 11 | Jul 19 |
| Potato | — | May 30 – Jun 20 | Aug 8 |
| Kale | Apr 10 – Apr 24 | May 22 – Jun 5 | Jul 4 |
| Broccoli | Apr 3 – Apr 17 | May 15 – Jun 5 | Jul 14 |
| Cucumber | May 25 – Jun 1 | Jun 22 – Jul 6 | Aug 11 |
| Summer squash and zucchini | May 25 – Jun 1 | Jun 22 – Jul 6 | Aug 6 |
| Winter squash | May 25 – Jun 1 | Jun 22 – Jul 6 | Sep 10 |
| Sweet corn | — | Jun 17 – Jul 8 | Aug 16 |
| Onion (from sets) | — | May 15 – Jun 5 | Aug 13 |
| Garlic | — | Sep 19 – Oct 17 (fall) | following summer |
| Spinach | — | May 15 – Jun 12 | Jun 22 |
| Basil | May 11 – May 25 | Jun 22 – Jul 6 | Aug 18 |
Mount Pearl'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 |
|---|---|
| 1942 | Jun 13 |
| 1943 | May 29 |
| 1944 | Jun 4 |
| 1945 | Jun 6 |
| 1946 | Jun 26 |
| 1947 | Jun 21 |
| 1948 | May 19 |
| 1949 | Jun 3 |
| 1950 | Jun 28 |
| 1951 | Jun 13 |
| 1952 | May 20 |
| 1953 | Jun 7 |
| 1954 | Jun 16 |
| 1955 | May 30 |
| 1956 | Jun 20 |
| 1957 | Jun 9 |
| 1958 | May 19 |
| 1959 | Jun 11 |
| 1960 | May 26 |
| 1961 | May 20 |
| 1962 | Jun 5 |
| 1963 | May 19 |
| 1964 | May 22 |
| 1965 | May 27 |
| 1966 | May 24 |
| 1967 | May 27 |
| 1968 | Jun 10 |
| 1969 | May 23 |
| 1970 | Jun 6 |
| 1971 | May 16 |
| 1972 | May 29 |
| 1973 | Jun 6 |
| 1974 | Jun 8 |
| 1975 | Jun 22 |
| 1976 | Jul 6 |
| 1977 | May 21 |
| 1978 | Jun 3 |
| 1979 | Jun 2 |
| 1980 | May 21 |
| 1981 | Jun 12 |
| 1982 | Jun 14 |
| 1983 | Jun 16 |
| 1984 | Jun 17 |
| 1985 | Jun 1 |
| 1986 | May 27 |
| 1987 | May 27 |
| 1988 | May 9 |
| 1989 | May 19 |
| 1990 | May 26 |
| 1991 | Jun 5 |
| 1992 | May 26 |
| 1993 | Jun 1 |
| 1994 | Jun 9 |
| 1995 | Jun 1 |
| 1996 | May 12 |
| 1997 | Jun 8 |
| 1998 | May 13 |
| 1999 | Jun 10 |
| 2000 | Jun 12 |
| 2001 | May 26 |
| 2002 | May 15 |
| 2003 | May 24 |
| 2004 | May 27 |
| 2005 | May 25 |
| 2006 | Jun 1 |
| 2007 | Jun 3 |
| 2008 | May 14 |
| 2009 | May 26 |
| 2010 | May 19 |
| 2011 | May 3 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1942 | 125 |
| 1943 | 133 |
| 1944 | 142 |
| 1945 | 144 |
| 1946 | 104 |
| 1947 | 104 |
| 1948 | 121 |
| 1949 | 127 |
| 1950 | 86 |
| 1951 | 116 |
| 1952 | 148 |
| 1953 | 115 |
| 1954 | 112 |
| 1955 | 116 |
| 1956 | 108 |
| 1957 | 126 |
| 1958 | 149 |
| 1959 | 117 |
| 1960 | 148 |
| 1961 | 143 |
| 1962 | 135 |
| 1963 | 143 |
| 1964 | 145 |
| 1965 | 142 |
| 1966 | 151 |
| 1967 | 140 |
| 1968 | 131 |
| 1969 | 149 |
| 1970 | 141 |
| 1971 | 140 |
| 1972 | 139 |
| 1973 | 140 |
| 1974 | 135 |
| 1975 | 104 |
| 1976 | 86 |
| 1977 | 150 |
| 1978 | 102 |
| 1979 | 114 |
| 1980 | 117 |
| 1981 | 123 |
| 1982 | 114 |
| 1983 | 122 |
| 1984 | 110 |
| 1985 | 133 |
| 1986 | 124 |
| 1987 | 138 |
| 1988 | 175 |
| 1989 | 151 |
| 1990 | 158 |
| 1991 | 133 |
| 1992 | 147 |
| 1993 | 127 |
| 1994 | 132 |
| 1995 | 140 |
| 1996 | 145 |
| 1997 | 137 |
| 1998 | 146 |
| 1999 | 124 |
| 2000 | 125 |
| 2001 | 149 |
| 2002 | 147 |
| 2003 | 162 |
| 2004 | 149 |
| 2005 | 142 |
| 2006 | 127 |
| 2007 | 129 |
| 2008 | 162 |
| 2009 | 142 |
| 2010 | 166 |
| 2011 | 178 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1942 | 10.5 °C |
| 1943 | 9.3 °C |
| 1944 | 9.8 °C |
| 1945 | 9.9 °C |
| 1946 | 10.8 °C |
| 1947 | 9.8 °C |
| 1948 | 9.6 °C |
| 1949 | 9.9 °C |
| 1950 | 9.8 °C |
| 1951 | 11.3 °C |
| 1952 | 11.0 °C |
| 1953 | 10.7 °C |
| 1954 | 10.1 °C |
| 1955 | 9.1 °C |
| 1956 | 9.4 °C |
| 1957 | 9.5 °C |
| 1958 | 10.9 °C |
| 1959 | 9.4 °C |
| 1960 | 10.9 °C |
| 1961 | 10.5 °C |
| 1962 | 8.8 °C |
| 1963 | 9.3 °C |
| 1964 | 9.3 °C |
| 1965 | 9.6 °C |
| 1966 | 10.2 °C |
| 1967 | 10.9 °C |
| 1968 | 8.7 °C |
| 1969 | 9.7 °C |
| 1970 | 10.5 °C |
| 1971 | 11.1 °C |
| 1972 | 9.9 °C |
| 1973 | 10.2 °C |
| 1974 | 9.1 °C |
| 1975 | 10.0 °C |
| 1976 | 10.6 °C |
| 1977 | 10.0 °C |
| 1978 | 9.4 °C |
| 1979 | 10.4 °C |
| 1980 | 9.0 °C |
| 1981 | 10.7 °C |
| 1982 | 9.7 °C |
| 1983 | 10.8 °C |
| 1984 | 10.9 °C |
| 1985 | 9.6 °C |
| 1986 | 10.0 °C |
| 1987 | 10.1 °C |
| 1988 | 10.8 °C |
| 1989 | 11.3 °C |
| 1990 | 10.6 °C |
| 1991 | 9.0 °C |
| 1992 | 9.4 °C |
| 1993 | 9.2 °C |
| 1994 | 11.0 °C |
| 1995 | 9.7 °C |
| 1996 | 10.3 °C |
| 1997 | 9.8 °C |
| 1998 | 11.5 °C |
| 1999 | 12.1 °C |
| 2000 | 11.0 °C |
| 2001 | 10.5 °C |
| 2002 | 10.6 °C |
| 2003 | 10.8 °C |
| 2004 | 10.9 °C |
| 2005 | 11.0 °C |
| 2006 | 11.9 °C |
| 2007 | 10.6 °C |
| 2008 | 10.9 °C |
| 2009 | 11.4 °C |
| 2010 | 11.2 °C |
| 2011 | 10.4 °C |
What this means for you: Since 1942, Mount Pearl's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 4 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from St John's A (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.