Patterson, LA Weather Forecast
St. Mary Parish, Louisiana
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
51–76°F across the weekThe week runs between 52° and 76°, 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 Patterson forecast
Patterson sits at 29.6909°N, 91.3095°W in St. Mary Parish, Louisiana. 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
- St. Mary Parish
- Coordinates
- 29.6909°N, 91.3095°W
- Population
- 5,636 · 2023 estimate
- Land area
- 2.524 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Patterson, 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 Patterson?
The nearest Doppler radar is KHDC (Hammond, LA), 79 miles to the NE. 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 Patterson its center is about 6,700 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 KPTN · Patterson/Williams Mem on the ASOS/AWOS network, 2.2 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
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 Louisiana observing network as of this build.
Forecasts near Patterson
- Berwick, LA5 mi
- Morgan City, LA7 mi
- Franklin, LA14 mi
- Jeanerette, LA27 mi
- Thibodaux, LA31 mi
- Donaldsonville, LA34 mi
- Houma, LA37 mi
- New Iberia, LA38 mi
Elsewhere in Louisiana
New OrleansBaton RougeShreveportLafayetteLake CharlesKennerAll Louisiana forecasts →