Frost dates for Johnson 2 N, Vermont
Half of years have their last spring frost by May 9, but 1 year in 10 still frosts after May 24.
A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
How often a frost still comes on or after each date.
- 1 year in 10
- May 24
- 1 year in 5
- May 19
- 3 years in 10
- May 15
- 2 years in 5
- May 12
- Half of years (the median)
- May 9
First fall freeze
How often the first freeze comes on or before each date.
- 1 year in 10
- September 19
- 1 year in 5
- September 23
- 3 years in 10
- September 26
- 2 years in 5
- September 29
- Half of years (the median)
- October 1
- Growing season
- about 142 days
- Hardiness zones nearby
- 4b, 5a
- Summer days
- a usual high of about 23 °C74 °F
- Lettuce and spinach run to seed
- July, in hot, long days (how we know)
Summer and rain
A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.
Month by month
- January
- high ~-4 °C24 °F · low ~-15 °C5 °F · rain ~71 mm2.8 in
- February
- high ~-2 °C28 °F · low ~-14 °C7 °F · rain ~60 mm2.4 in
- March
- high ~2 °C36 °F · low ~-9 °C16 °F · rain ~70 mm2.8 in
- April
- high ~10 °C50 °F · low ~-1 °C30 °F · rain ~96 mm3.8 in
- May
- high ~17 °C63 °F · low ~6 °C42 °F · rain ~128 mm5 in
- June
- high ~22 °C71 °F · low ~11 °C51 °F · rain ~118 mm4.6 in
- July
- high ~24 °C76 °F · low ~13 °C56 °F · rain ~114 mm4.5 in
- August
- high ~24 °C74 °F · low ~12 °C54 °F · rain ~111 mm4.4 in
- September
- high ~20 °C68 °F · low ~8 °C46 °F · rain ~103 mm4 in
- October
- high ~12 °C54 °F · low ~2 °C36 °F · rain ~131 mm5.2 in
- November
- high ~5 °C42 °F · low ~-4 °C26 °F · rain ~95 mm3.7 in
- December
- high ~-1 °C30 °F · low ~-10 °C14 °F · rain ~91 mm3.6 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Johnson 2 N station (listed by NOAA as Johnson 2 N, USC00434290), at 44.66, -72.68. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.
ZIP codes nearest this station
05441, 05442, 05447, 05448, 05450, 05455, 05457, 05459, 05464, 05471, 05476, 05483…
+9 moreShow fewer
05485, 05492, 05652, 05653, 05655, 05656, 05826, 05827, 05847.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Plainfield, VT, last frost by May 25
- S Hero, VT, last frost by April 28
- E Sandwich, NH, last frost by May 6
- Newport, NH, last frost by May 14
- Peru, VT, last frost by May 16
When do I plant? · Where the dates come from
More ways Milpa can help
When do I plant? · What grows well together? · Plan my garden · What can I plant now? · Something wrong in the garden? · Keep a garden diary · Heard a tip?