Barstow Weather Forecast
- 73
- 91
Mostly Sunny
- 73
- 93
Slight Chance Thunderstorms
- 72
- 95
Chance Thunderstorms
- 72
- 92
Chance Thunderstorms
- 68
- 89
Chance Thunderstorms
- 63
- 84
Partly Sunny
Today 15 Aug Rock Island
Mostly sunny. Hot with Highs in the lower 90s. Southeast Winds around 5 Mph.
Tonight 15 Aug Rock Island
Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. South Winds around 5 Mph. Chance of rain 20 percent.
Barstow Temperature Statistics
August Temperature
Moline Quad-City Airport (9.3 miles)
Lowest 3 August, 2025
53.7 °FAverage August
74.2 °FHighest 8 August, 2025
90.6 °F
Climate (2020–Present)
Moline Quad-City Airport (9.3 miles)
Average Low 2020–2025
42.9 °FAverage 2020–2025
53.4 °FAverage High 2020–2025
63.6 °F