Smithfield, UT Weather Forecast
Cache County, Utah
Seven-day outlook
33–59°F across the weekThe week runs between 33° and 59°, with today the warmest day of it. The second half leans cooling, and Sunday is the coolest day in it. Sunday is the wettest day, peaking near 96%. 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 Smithfield forecast
Smithfield sits at 41.8355°N, 111.8275°W in Cache County, Utah. 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
- Cache County
- Coordinates
- 41.8355°N, 111.8275°W
- Population
- 14,726 · 2023 estimate
- Land area
- 6.007 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Smithfield, 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 Smithfield?
The nearest Doppler radar is KMTX (Salt Lake City, UT), 51 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 Smithfield its center is about 3,600 ft above ground. That is comfortably inside the useful range. The lowest scan passes low enough over Smithfield to show rotation in the part of a storm where tornadoes actually form.
The closest instrument actually measuring the air is KLGU · Logan/Cache Arpt on the ASOS/AWOS network, 3.6 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 Utah observing network as of this build.
Forecasts near Smithfield
- Hyde Park, UT3 mi
- North Logan, UT4 mi
- Richmond, UT6 mi
- Logan, UT7 mi
- Providence, UT9 mi
- Nibley, UT11 mi
- Hyrum, UT14 mi
- Wellsville, UT16 mi
Elsewhere in Utah
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