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St George weather in September 2026
Expect daytime maximum temperatures of 33°C in St George, Utah in September and high heat and humidity based on long-term weather averages. There are 11 hours of sunshine per day on average.
- 33°C max day temperature
33 - 11 hours of sunshine per day
- 3 days with some rainfall
3 - 14°C min night temperature
14 - 12 hours of daylight per day
12 - High heat & humidity
H - 14 mm of monthly rainfall
14 - 8 (Very High) UV index
8
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Recommended for Utah
The September weather guide for Utah (St George) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
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How hot is it in St George in September?
Daytime temperatures usually reach 26°C in St George in September with no heat and humidity, falling to 9°C at night.
How sunny is it in St George in September?
There are normally 10 hours of bright sunshine each day in St George in September - that's 80% of daylight hours.
Does it rain in St George in September?
There are usually 6 days with some rain in St George in September and the average monthly rainfall is 31mm.
St George September sunrise & sunset times
Browse the sunrise and sunset times for St George in September 2026. Select a month to view St George sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 06:05 | 19:03 |
| Tuesday, 15th September 2026 | 06:16 | 18:42 |
| Wednesday, 30th September 2026 | 06:29 | 18:19 |
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