The key change in Provo’s forecast comes after a mild Veterans Day: rain becomes possible Friday night, followed by showers Saturday and a much cooler daytime high. The National Weather Service point forecast puts Friday’s high near 62 degrees and Friday night’s low near 42, with a chance of rain overnight. Saturday’s forecast calls for showers and a high around 50.
A mild start, then a sharp change
Wednesday is forecast to be sunny with a high near 62, and Thursday sunny with a high near 64 before temperatures fall to around 40 overnight, according to the NWS. That dry stretch gives way to the wetter weekend pattern; the forecast supports a chance of rain Friday night and showers Saturday, but the specific precipitation amounts and probabilities are not included here.
The NWS Salt Lake City forecast discussion also points to several inches of snow in surrounding mountains. That is a separate elevation-related impact from the valley forecast, not a prediction of snow in Provo. The discussion is available from the NWS Salt Lake City office.
What the forecast terms do—and don’t—say
A precipitation probability is not a rainfall total. The National Weather Service explains that it describes the chance of at least 0.01 inch at a specific forecast point during the stated period; it does not say how much precipitation will fall or how long it will last.
The quiet midweek weather may also provide conditions in which a valley inversion can form. Utah’s Division of Air Quality explains that high pressure can help place warmer air above cooler valley air, acting like a cap. That general mechanism does not establish current air quality in Provo.
Sunday is forecast to be partly sunny with a high near 53, offering a less wet outlook after Saturday’s showers. For anyone traveling, the Utah Department of Transportation says its Traffic website and app provide road-weather updates and live camera views. Check conditions close to departure, particularly for routes that climb into the mountains.
