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 |
---|---|
Feb 1-8 | Rain and snow showers, mild |
Feb 9-15 | Snowy periods, cold |
Feb 16-18 | Sunny, cold |
Feb 19-20 | Rain to snow |
Feb 21-28 | Snow showers, cold |
February | temperature -5.5°C (1°C above avg.) precipitation 100mm (avg.) |
Dates | Weather Conditions |
---|---|
Mar 1-5 | Flurries, cold |
Mar 6-13 | Snowy periods, cold |
Mar 14-24 | Flurries; cold, then mild |
Mar 25-31 | Snowy periods, mild |
March | temperature --2°C (1°C above avg.) precipitation 130mm (10mm above 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

Reader Comments
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Wx
Fantastic prediction accuracy!
Weather
Thank-you so much for this Site, I have always Believed in the Farmers Almanac, you do a Fantastic job!
weather
Love this page. Your doing a great job.
ridiculous
These predictions are a mix of best guess and common sense, neither of which necessarily predicts anything at all when it comes to weather. Warm wind from the south, cool from the north? Gee, who'd have thought? How about this: warm this summer, followed by a cold winter period.
Pfft
Extreme Cold
Will there be any extreme cold(arctic blasts) across the Maritimes this year? has it ever happened before?
A new fan
I've been monitoring your site for the last several months and am very impressed by your accuracy. I have already asked santa for a copy for Christmas and shown him where to he can purchase a copy. After reading the reviews I'm anxious to read the new 2020 edition.
Nov 23 2018
Another cold day starting out at -12.8 C Way below the predication.
November
This September and October we had a lot more preciptation as was predicated. November has been Much colder than the last 10 years . The temperature has reached -10 degrees C. three times this month . We have so much more snow this year than the last three years .
Not sure what the normal is but we have much more wind this year in Sept. Oct. and November.
Your weather prediction.
I really look forward to reading about your weather forcasts. I have been following them for years and they are usually right on.
Also, thank you for the great recipes.
weather
love Farmers Almanac been getting the book every year sicnce 2000 . your always right on most of the time and ive always deepded on you for winter, because of the distance i drove to work . you help me plan for the drive. ive moved now that im retired to canada . lol and i still count on your weather . learning about the diffrent insects , and the wild life i do love you guys for all the info you share thank you for a grat job
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