Our Proprietary 10-Day Forecast

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Current warnings over Portland, Maine
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Portland, Maine red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Portland, Maine red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Cumberland County, ME

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Portland, Maine

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Portland, ME please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Portland, ME

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Portland, ME, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Portland, Maine

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Cumberland County, Maine

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Portland, Maine's climate is classified as humid continental, with warm, humid summers and cold, snowy winters. The city experiences four distinct seasons, each with its own unique characteristics.

Summer (June-August)

    •   Average high temperatures: 80°F (27°C)
    •   Average low temperatures: 60°F (16°C)
    •   Average precipitation: 3.5 inches (8.9 cm)
    •   Humidity: High

Summers in Portland are warm and humid, with occasional heat waves. The city's proximity to the Atlantic Ocean helps to moderate the temperatures, but it can still get quite hot and muggy. The average high temperature in July, the warmest month of the year, is 82°F (28°C). The average low temperature in July is 62°F (17°C).

Fall (September-November)

    •   Average high temperatures: 60°F (16°C)
    •   Average low temperatures: 40°F (4°C)
    •   Average precipitation: 3.5 inches (8.9 cm)
    •   Humidity: Moderate

Fall in Portland is a beautiful time of year, with crisp air and vibrant foliage. The leaves on the trees start to change color in late September and early October, creating a stunning display. The average high temperature in October, the coolest month of the year, is 55°F (13°C). The average low temperature in October is 37°F (3°C).

Winter (December-February)

    •   Average high temperatures: 30°F (-1°C)
    •   Average low temperatures: 15°F (-9°C)
    •   Average precipitation: 4.5 inches (11.4 cm)
    •   Humidity: Low

Winters in Portland are cold and snowy, with occasional blizzards. The city averages about 52 inches (132 cm) of snow per year. The average high temperature in January, the coldest month of the year, is 32°F (0°C). The average low temperature in January is 13°F (-11°C).

Spring (March-May)

    •   Average high temperatures: 50°F (10°C)
    •   Average low temperatures: 30°F (-1°C)
    •   Average precipitation: 3.5 inches (8.9 cm)
    •   Humidity: Moderate

Spring in Portland is a time of transition, as the weather starts to warm up and the snow melts away. The days get longer and the flowers start to bloom. The average high temperature in April, the warmest month of the year, is 55°F (13°C). The average low temperature in April is 35°F (2°C).

Overall, Portland, Maine has a humid continental climate with four distinct seasons. The city experiences warm, humid summers, cold, snowy winters, and mild spring and fall seasons.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Portland is home to the oldest intact urban forest in the United States, covering over 2,000 acres.

    •   The city's waterfront is a thriving ecosystem, supporting a diverse array of marine life, including seals, porpoises, and seabirds.

Science

    •   Portland is a hub for marine research and development. The University of Maine's Darling Marine Center conducts groundbreaking work in oceanography and aquaculture.

    •   The city is home to the Maine Medical Center, a renowned research hospital specializing in cancer, cardiology, and neuroscience.

Personalities

    •   Henry Wadsworth Longfellow, the renowned poet, was born in Portland in 1807.

    •   Admiral Robert E. Peary, who led the first successful expedition to the North Pole, was a Portland native.

    •   Ed Muskie, a prominent Democratic politician, served as Governor of Maine and U.S. Secretary of State under President Jimmy Carter.

Tourist Attractions
1. Portland Head Light

2. Old Port

3. Portland Museum of Art

Nearby Cities:

South Portland, ME
South Portland Gardens, MEFalmouth, ME
Falmouth Foreside, MEWestbrook, ME
Scarborough, MEWest Scarborough, ME
Cumberland Center, MEGorham, ME
South Windham, MEYarmouth, ME
Old Orchard Beach, MEBuxton, ME
Saco, MENorth Windham, ME
Biddeford, MEFreeport, ME
Boston, MA
South Boston, MALowell, MA
Cambridge, MAManchester, NH
Brockton, MAQuincy, MA
Lynn, MANewton, MA
Nashua, NHSomerville, MA
Lawrence, MA