2020 Long Range Weather Forecast for South Portland, ME

Get the Long Range Weather for Your Location

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

September 2020 Long Range Weather Forecast for Northeast
DatesWeather Conditions
Sep 1-4Sunny, cool
Sep 5-14A few showers, cool
Sep 15-21Rainy periods, warm
Sep 22-24Sunny, warm
Sep 25-30Sunny, cool
Septembertemperature 59° (avg.)
precipitation 4" (avg.)

October 2020 Long Range Weather Forecast for Northeast
DatesWeather Conditions
Oct 1-3Sunny, cool
Oct 4-10Showers; cool north, warm south
Oct 11-13Tropical rainstorm
Oct 14-22Sunny, then showers, warm
Oct 23-31A few showers; cool, then mild
Octobertemperature 51° (1° above avg. north, 5° above south)
precipitation 4.5" (1" above avg.)

Annual Weather Summary
November 2019 to October 2020

Winter will be milder than normal, on average, with above-normal precipitation and near- or below-normal snowfall. The coldest periods will be in early to mid-January, late January, and early February. The snowiest periods will be in mid-November, mid- to late December, and early and late January. April and May will have above-normal temperatures, with below-normal rainfall. Summer temperatures will be hotter than normal, with the hottest periods in mid-June, mid- to late July, and early August. Rainfall will be below normal in the north and above normal in the south. September and October will be warmer and rainier than normal, with a tropical storm threat in mid-October.

Map showing Old Farmer's Almanac long range weather region number 1

About the Northeast Region

The Northeast long range weather region includes all or part of the following states: MAINE (Auburn, Bangor, Lewiston, Portland, South Portland), MASSACHUSETTS (Chicopee, Haverhill, Lawrence, Lowell, Springfield), NEW HAMPSHIRE (Concord, Dover, Manchester, Nashua, Rochester), NEW YORK (Albany, Rome, Schenectady, Troy, Utica), VERMONT (Burlington, Rutland, South Burlington).

Northeast Neighboring Regions

Here are the regions that neighbor the Northeast long range weather region:

Temperature and Precipitation November 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for South Portland, ME

Reader Comments

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June 29th thru July 6th of 2019

I have a beach week planned the week of the 4th of July in Hampton Beach, NH. I know it may be too early to predict but I figured it was worth a shot. The reason I ask, is because prior to July 2018, it always rained on the 4th. However, last year and the year before it was extremely hot and humid so it seems as if there’s been a shift in weather patterns. We are hoping the heat continues on the 4th for this year too! - Kimberly M. Of NH

end of June into July

The Editors's picture

We are predicting thunderstorms and warm temps for the last week of June, with showers and temps turning cool from July 1 to 5.

Wedding August 11th 2019

It's probably too early to ask but any predictions for a wedding august 11th weather?

This would be near concord,

This would be near concord, NH for august 11th.

Aug 11

The Editors's picture

Never —well, almost never— too early to ask: for Aug 10 to 15, we are predicting thunderstorms, then sunny, hot weather.

September or October Wedding

Any weather predictions for Portland, ME on September 21 or October 5?

Sept 21 or Oct 5

The Editors's picture

Let’s see: We’re predicting showers, mild from Sept 19 to 22, and showers, cool on Oct 1 to 7. But we’ve been wrong before!

July Wedding

We are trying to decide between July 14th and July 28th for our wedding this summer in Burlington Wisconsin. Any insights or prescriptions?
Thanks!

July 14 or 28

The Editors's picture

Well, Burlington, Wisconsin, is in Region 6. July 13 to 18 there is predicted to be scattered thunderstorms, cool and July 19 to 31 is predicted to see a few thunderstorms, warm.

Wedding May 24-27 2019 Boothbay Harbor Maine

Looking to plan an outdoor wedding in Boothbay Harbor Region on Memorials day weekend 2019. What is the weather prediction?

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