Casco, ME Weather Forecast
Cumberland County, Maine
Seven-day outlook
29–65°F across the weekThe week runs between 28° and 65°, with today the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Casco forecast
Casco sits at 43.9520°N, 70.5132°W in Cumberland County, Maine. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Cumberland County
- Coordinates
- 43.9520°N, 70.5132°W
- Population
- 3,686 · 2023 estimate
- Land area
- 31.284 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Casco, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Casco?
The nearest Doppler radar is KGYX (Portland, ME), 13 miles to the ESE. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Casco its center is about 710 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Casco, so low-level rotation and the leading edge of a gust front show up on it. Casco is closer to its radar than 92% of US cities.
The closest instrument actually measuring the air is KLEW · Auburn-Lewiston Muni on the ASOS/AWOS network, 13 miles away. Near enough to be representative on most days, though a summer thunderstorm can soak one and miss the other entirely.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Maine observing network as of this build.
Forecasts near Casco
- Raymond, ME3 mi
- Naples, ME6 mi
- Gray, ME8 mi
- Poland, ME9 mi
- New Gloucester, ME11 mi
- Mechanic Falls, ME12 mi
- Windham, ME12 mi
- Harrison, ME12 mi
Elsewhere in Maine
PortlandLewistonBangorSouth PortlandAuburnScarboroughAll Maine forecasts →