Picayune, MS Weather Forecast
Pearl River County, Mississippi
Seven-day outlook
46–81°F across the weekThe week runs between 60° and 81°, with today the warmest day of it. There is no real trend across it: one day looks much like the next. Sunday is the wettest day, peaking near 50%. 3 of the 7 days stay 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 Picayune forecast
Picayune sits at 30.5308°N, 89.6706°W in Pearl River County, Mississippi. 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
- Pearl River County
- Coordinates
- 30.5308°N, 89.6706°W
- Population
- 11,862 · 2023 estimate
- Land area
- 18.038 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Picayune, 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 Picayune?
The nearest Doppler radar is KLIX (New Orleans, LA), 16 miles to the SW. 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 Picayune its center is about 880 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 Picayune, so low-level rotation and the leading edge of a gust front show up on it. Picayune is closer to its radar than 89% of US cities.
The closest instrument actually measuring the air is KASD · Slidell Arpt on the ASOS/AWOS network, 16 miles away. Far enough that "current conditions" for Picayune is an educated reading of somewhere else, worth knowing before you plan around a single temperature.
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 Mississippi observing network as of this build.
Forecasts near Picayune
- Pearl River, LA12 mi
- Slidell, LA18 mi
- Bogalusa, LA20 mi
- Abita Springs, LA21 mi
- Diamondhead, MS22 mi
- Poplarville, MS23 mi
- Waveland, MS23 mi
- Bay St. Louis, MS23 mi
Elsewhere in Mississippi
JacksonGulfportSouthavenHattiesburgBiloxiOlive BranchAll Mississippi forecasts →