2021 Long Range Weather Forecast for Saint John, NB
See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.
To see long term forecasts for the entire year, pick up a copy of The 2021 Old Farmer’s Almanac, available online and in stores.
Note: Long range forecasts are regional, not city-specific.
Free 2-Month Weather Forecast
| Dates | Weather Conditions |
|---|---|
| May 1-5 | Rain, then sunny, warm |
| May 6-18 | Scattered showers; cool, then warm |
| May 19-31 | Isolated showers; cool, then warm |
| May | temperature 9.5°C (avg.) precipitation 110mm (50mm below avg. northeast, 50mm above southwest) |
| Dates | Weather Conditions |
|---|---|
| Jun 1-7 | Rainy periods, cool |
| Jun 8-15 | A few showers, turning warm |
| Jun 16-22 | Rainy periods, cool |
| Jun 23-30 | A few showers, cool |
| June | temperature 16.5°C (2°C above avg.) precipitation 100mm (avg.) |
Annual Weather Summary
November 2020 to October 2021
November 2020 to October 2021
Winter temperatures will be above normal, on average, with the coldest periods in early to mid-December, mid- and late January, mid-February, and from late February into early March. Precipitation and snowfall will be near to below normal in the north and above normal in the south, with the snowiest periods in mid-December, mid-January, early to mid-February, and early to mid-March. April and May will be slightly warmer than normal, with precipitation below normal in the north and above normal in the south. Summer will be warmer than normal, with rainfall below normal in the north and above normal in the south. The hottest periods will be in mid-June and early and mid-August. Watch for a tropical storm threat in early to mid-August. September and October temperatures will be near normal, with above-normal rainfall.
About the Atlantic Canada Region
The Atlantic Canada long range weather region includes all or part of the following provinces: NEW BRUNSWICK (Bathurst, Edmundston, Fredericton, Moncton, Saint John), NEWFOUNDLAND AND LABRADOR (Bay Roberts, Corner Brook, Saint John's), NOVA SCOTIA (Glace Bay, Halifax, Kentville, New Glasgow, Sydney Mines, Truro), PRINCE EDWARD ISLAND (Charlottetown, Summerside), QUEBEC (Baie-Comeau, Hauterive, Matane, Rimouski).
Atlantic Canada Neighboring Regions
Here are the regions that neighbor the Atlantic Canada long range weather region:
Temperature and Precipitation November 2020 to October 2021
