Windham, NH Weather Forecast
Rockingham County, New Hampshire
The next few hours
A dry morning, mostly cloudy
It is 43°, but the wind is taking it down to 37° on exposed skin. The sky is mostly cloudy.
The wind backs into the southwest around 8 PM, which is the turn that usually comes ahead of the change rather than after it. Nothing in the next day and a half is wet enough to move plans for.
Colour and bar height both show how heavy the rain would look on radar. A dotted line means the model has no reading for that hour, which is not the same as no rain.
Hour by hour
Quiet through the next day and a half
Nothing wet is expected over the next day and a half.
The overnight low settles near 41°. Tomorrow tops out near 56°.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
30–57°F across the weekThe week runs between 30° and 56°, with tomorrow the warmest day of it. There is no real trend across it: one day looks much like the next. Today is the wettest day, peaking near 39%. 5 of the 7 days stay dry.
About the Windham forecast
Windham sits at 42.8111°N, 71.3027°W in Rockingham County, New Hampshire. 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
- Rockingham County
- Coordinates
- 42.8111°N, 71.3027°W
- Population
- 16,086 · 2023 estimate
- Land area
- 26.744 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Windham, 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 Windham?
The nearest Doppler radar is KBOX (Boston, MA), 60 miles to the S. 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 Windham its center is about 4,500 ft above ground. That is far enough out that the beam has climbed above the lowest few thousand feet. Storm structure aloft is visible; a shallow circulation near the ground may not be, and a warning here can arrive before anything looks dramatic on the radar picture.
The closest instrument actually measuring the air is KMHT · Manchester Rgnl on the ASOS/AWOS network, 10 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 New Hampshire observing network as of this build.
Forecasts near Windham
- Salem, NH4 mi
- Derry, NH5 mi
- Pelham, NH6 mi
- Hudson, NH6 mi
- Londonderry, NH7 mi
- Atkinson, NH7 mi
- Methuen Town, MA8 mi
- Hampstead, NH8 mi
Elsewhere in New Hampshire
ManchesterNashuaConcordDerryRochesterDoverAll New Hampshire forecasts →