Northwest Reservoir Weather Forecast
- 41
- 74
Isolated Thunderstorms
- 38
- 73
Mostly Sunny
- 39
- 76
Mostly Sunny
- 42
- 78
Mostly Sunny
- 46
- 81
Partly Sunny
- 45
- 78
Slight Chance Thunderstorms
- 43
- 76
Slight Chance Thunderstorms
Today 15 Sep Wasatch Back
Partly cloudy. Highs in the mid 70s.
Tonight 15 Sep Wasatch Back
Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Lows in the lower 40s. Chance of precipitation 50 percent.
Northwest Reservoir Temperature Statistics
September Temperature
Hill Air Force Base (9.9 miles)
Lowest 13 September, 2025
55.4 °FAverage September
72.9 °FHighest 10 September, 2025
87.4 °F
Climate (2020–Present)
Hill Air Force Base (9.9 miles)
Average Low 2020–2025
43.3 °FAverage 2020–2025
52.4 °FAverage High 2020–2025
61.8 °F