St. George, UT Weather
St. George hourly forecast: next 24 hours
Today's high of 88°F (31°C) is about 5°F (3°C) below the typical September high of 93°F (34°C).
Current conditions in detail
St. George weather tomorrow (Wednesday, September 16)
Tomorrow in St. George looks patchy rain nearby, with a high of 86° and an overnight low of 66°. There is a 59% chance of rain - plan accordingly. Winds top out near 18 mph, and the UV index reaches 8 (very high).
St. George 14-day forecast
About the weather in St. George
With 8.3 inches (211 mm) of annual precipitation, St. George is one of the drier places we cover. January is the wettest month it gets, at 1.4 inches (36 mm), and the year runs between 53°F (11°C) and 103°F (39°C) by day.
St. George weather: quick facts
- Hottest month: July - highs near 103°F (39°C)
- Coldest month: January - highs near 53°F (11°C)
- Decade extremes (2015-2024): 116°F (46°C) high · 16°F (-9°C) low
- Wettest month: January (6 rainy days) · Sunniest: June (13.9 h sun/day)
- Climate type: hot desert
- Annual swing: 27°C between the average warmest and coolest month · day to night: 12°C
- Snow: about 3 days a year
- Months averaging 30°C or hotter: 4
- Average humidity: 34%
Temperatures through the year
Snow falls on roughly 3 days a year, mostly February through March. At its warmest, in July, St. George runs to 103°F (39°C) in the afternoon and back to 80°F (26°C) by dawn. January sits at the other end of the year: 53°F (11°C) by day, 35°F (2°C) at night. The gridded 2015-2024 daily record for this location tops out at 116°F (46°C) and bottoms at 16°F (-9°C) - decade extremes, not all-time station records. Average highs hold at or above 30°C for 4 months of the year, June through September being the unbroken run.
Rain, sun and snow
Sunshine averages 11.0 hours a day over the year - sunnier than 95% of the 3496 cities in our dataset, peaking in June at 13.9 hours.
Season by season
Spring (March through May)
Through spring, St. George brings comfortable warmth: 76°F (25°C) by day, 52°F (11°C) after dark, and rain comes on about 10 days over the three months. Daylight is generous - around 11.8 hours of sun a day.
Summer (June through August)
Through summer, St. George runs at full heat: 100°F (38°C) by day, 77°F (25°C) after dark, and precipitation is sparse, near 19 mm (0.8 in) for the season. Daylight is generous - around 13.2 hours of sun a day.
Fall (September through November)
Through fall, St. George brings comfortable warmth: 78°F (26°C) by day, 55°F (13°C) after dark, and precipitation is sparse, near 1.8 inches (45 mm) for the season. Daylight is generous - around 10.4 hours of sun a day.
Winter (December through February)
Winter in St. George is mild, with daytime highs averaging 54°F (12°C) and nights around 36°F (2°C); rain comes on about 16 days over the three months, plus about 2 snowy days.
Average temperatures in St. George by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 53° | 35° | 6 | 1.4 in | 8.1 h/day | 56% |
| February | 58° | 37° | 5 | 1.2 in | 9.3 h/day | 48% |
| March | 66° | 44° | 6 | 1.3 in | 10.3 h/day | 43% |
| April | 77° | 52° | 2 | 0.5 in | 12.2 h/day | 27% |
| May | 85° | 61° | 2 | 0.3 in | 12.8 h/day | 22% |
| June | 99° | 74° | 0 | 0.1 in | 13.9 h/day | 14% |
| July | 103° | 80° | 2 | 0.3 in | 13.1 h/day | 21% |
| August | 100° | 76° | 2 | 0.4 in | 12.6 h/day | 26% |
| September | 93° | 69° | 2 | 0.4 in | 11.7 h/day | 25% |
| October | 79° | 55° | 2 | 0.6 in | 10.4 h/day | 32% |
| November | 63° | 43° | 3 | 0.8 in | 9.1 h/day | 39% |
| December | 53° | 35° | 5 | 1.1 in | 8.0 h/day | 49% |