Smithfield Weather Forecast
- 48
- 78
Increasing Clouds
- 51
- 79
Mostly Cloudy
- 50
- 77
Slight Chance Thunderstorms
- 48
- 77
Slight Chance Thunderstorms
- 47
- 78
Sunny
- 51
- 84
Mostly Sunny
Today 18 Sep Cache Valley/Utah Portion
Sunny. Highs around 80.
Tonight 18 Sep Cache Valley/Utah Portion
Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s.
Smithfield Temperature Statistics
September Temperature
Logan-Cache Airport (3.1 miles)
Lowest 14 September, 2025
41 °FAverage September
68.4 °FHighest 2 September, 2025
91 °F
Climate (2020–Present)
Logan-Cache Airport (3.1 miles)
Average Low 2020–2025
35 °FAverage 2020–2025
48.2 °FAverage High 2020–2025
61.3 °F