Rainbow Weather Forecast
- 77
- 101
Hot
- 76
- 100
Hot
- 75
- 100
Hot
- 73
- 99
Hot
- 74
- 100
Hot
- 73
- 99
Chance Rain Showers
- 70
- 94
Slight Chance Thunderstorms
Today 15 Sep Somervell
Sunny, hot with Highs around 100. South Winds around 10 Mph. Heat index Values up to 105.
Tonight 15 Sep Somervell
Clear. Lows in the mid 70s. South Winds 5 to 10 Mph.
Rainbow Temperature Statistics
September Temperature
Granbury, Granbury Municipal Airport (13.7 miles)
Lowest 11 September, 2026
71.6 °FAverage September
87.4 °FHighest 12 September, 2026
104 °F
Climate (2021–2026)
Granbury, Granbury Municipal Airport (13.7 miles)
Average Low 2021–2026
56.3 °FAverage 2021–2026
67.6 °FAverage High 2021–2026
79.3 °F