Last and first frost dates in Moncton

When is the last frost in Moncton?

The last frost in Moncton usually comes around 1 May: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 10 April, while corn waits until 24 May. The first autumn frost follows around 4 November, about 187 days later: harvest or cover frost-tender crops before then.

When to sow and plant

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. 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.

When the soil warms up in Moncton

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 17 days after the last spring frost and 15 °C 39 days after it.

Frost dates near Moncton

Of the nearest cities on our list, the last spring frost ends earliest in Augusta (23 April) and latest in Charlottetown (10 May).

Seeds, seedlings and markets in Moncton

Within 15 km of Moncton OpenStreetMap lists 1 garden centre, 2 markets and 1 farm shop (collected 20 October 2026). The nearest garden centre to the city centre is MacArthur's Nurseries Inc., 3 km away.

• MacArthur's Nurseries Inc. — garden centre
  McLaughlin Drive 232 · Mon–Sat 09:00–18:00; Sun 10:00–17:00 · 3 km · macarthursnurseries.com
• Marché Moncton Market — market
  Westmorland Street 120, Moncton · Sat 08:00–14:00; Mon–Fri 10:00–16:00 · 2 km · marchemonctonmarket.ca
• Hardy's Produce — farm shop
  Mountain Road 1063, E1C 2S9 Moncton · Mon–Sat 09:00–20:00; Sun 00:00–18:00 · 2 km
• Dieppe Market — market
  Gauvin Road 232 · Wed–Fri 10:00–18:00; Sat 08:00–13:00 · 4 km · marchedieppemarket.com

• Where to buy seeds and seedlings in Moncton
• Selling your own harvest in Canada

Places: © OpenStreetMap contributors, ODbL.

Weather in Moncton by month

Average weather in Moncton over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (20.4–25.3 °C). Nights average below 0 °C in November–March (-10.4–-0.3 °C). About 1245 mm of rain falls in a year, on 143 days; November is the wettest month (123 mm) and May the driest (86 mm).

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).