When to plant watermelons in Montpelier: 20 June – 8 July

In Montpelier, watermelon: sow for seedlings from 2 May to 10 June; plant into a greenhouse from 30 May to 8 July; plant out into open ground from 20 June to 8 July. For plants and seeds, the places nearby include Guy's Farm & Yard (garden centre, 1 km) and Agway (garden centre, 2 km); addresses and opening hours are below.

Watermelon in Montpelier: soil, season and weather

In Montpelier the soil, not frost, sets the date: the last frost is over around 8 May, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 20 June, 43 days later.

Last spring frost	8 May
Top 7 cm of soil at 18 °C	20 June, 43 days after the last frost
Into an unheated greenhouse	30 May – 8 July; May outside: 6.8 °C at night, 18.6 °C by day; card 18–35 °C
First autumn frost	17 October, 119 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	18 August – 5 September
Days left for picking	60
Daylight	15:02 on 23 May, 15:31 on 20 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 8 rainy days

The same dates in Montpelier hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Montpelier: care after planting

Planted on 20 June: in the first weeks water every 5 days.

Feeding, by the card’s schedule from that day:

20 June — feed: balanced (NPK)

Pests and diseases of watermelon to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Montpelier during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 26.3 °C. Months that stay below 18 °C even by day on average: October (14.6 °C). Nights average below 18 °C in every month of the season, from 5.1 °C to 15.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.5	12.1	90	13	15:30
July	26.3	15.6	108	13	15:12
August	25.2	14.4	86	13	14:04
September	21.5	10.7	69	8	12:34
October	14.6	5.1	109	12	11:03

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

1 of the nearest cities share Montpelier's date.

City	Distance	Date	Difference
Burlington	57 km	1 June – 25 July	19 days earlier
Sherbrooke	137 km	18 June – 18 July	2 days earlier
Concord	143 km	1 June – 22 July	19 days earlier
Montreal	159 km	30 May – 23 July	21 days earlier
Manchester (United States)	167 km	30 May – 24 July	21 days earlier
Portland, Maine	196 km	20 June – 26 July	same day

Where to buy watermelon plants and seeds near Montpelier

Buy plants ready to set out from 20 June to 8 July (from 30 May to 8 July for an unheated greenhouse); seed for raising your own is sown from 2 May to 10 June. Within 15 km of Montpelier OpenStreetMap lists 4 garden centres and 1 farm-supply shop (collected 28 October 2026).

Tucker Machine Company Inc — farm supply
South Main Street 267, 05641 Barre · Tue–Fri 08:00–17:00, Sat 09:00–14:00 · 10 km
Thomas Farm & Garden — garden centre
U.S. Route 302 535, 05641 Barre · Mon–Sat 08:00–18:00; Sun 09:00–17:00 · 5 km
Guy's Farm & Yard — garden centre
Barre Street 19, 05602 Montpelier · 1 km
Agway — garden centre
East Montpelier Road 190, 05602 Montpelier · 2 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

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