Extreme Heat Warning
* WHAT...Dangerously hot conditions with highs 110 to 120 degrees
across the Mojave Desert. Highs 95 to 105 degrees across most of
the southern Great Basin and Arizona Strip. Little to no overnight
relief is expected, particularly in the Mojave Desert where lows of
80 to 95 degre…
Extreme Heat Warning
* WHAT...Dangerously hot conditions with temperatures up to 105
expected for most valley locations. Temperatures may approach or
exceed 110 degrees for Lower Washington County, Glen Canyon, and
Zion Canyon. Overnight lows in the upper 70s to low 80s will offer
little relief.
* W…
Extreme Heat Warning
* WHAT...Dangerously hot conditions with temperatures up to 110
expected, with some locations in the St George area nearing 112.
Little overnight relief will occur through Saturday.
* WHERE...Glen Canyon Recreation Area/Lake Powell, Lower Washington
County, and Zion National Par…
Tomorrow in St. George looks
sunny, with a high of 106°
and an overnight low of 76°.
Rain is unlikely (1% chance).
Winds top out near 10 mph,
and the UV index reaches 10 (very high).
Located in Utah, United States, St. George experiences a hot desert climate with intense summer heat, mild winters and very little rain. Afternoon temperatures peak near 103°F (39°C) in July and dip to about 53°F (11°C) in January, with around 8.3 inches (211 mm) of precipitation falling across the year.
St. George weather: quick facts
Hottest month: July - highs near 103°F (39°C)
Coldest month: January - highs near 53°F (11°C)
Record high: 116°F (46°C) · Record low: 16°F (-9°C) (2015–2024)
Wettest month: January (6 rainy days) · Sunniest: June (13.9 h sun/day)
Climate type:hot desert - intense summer heat, mild winters and very little rain
Snow: about 3 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 103°F (39°C) and overnight lows stay near 80°F (26°C). The coolest month is January, with typical highs of 53°F (11°C) and lows around 35°F (2°C). Based on 2015–2024 weather data, temperatures have reached as high as 116°F (46°C) and dropped as low as 16°F (-9°C).
Rain, sun and snow
January is usually the wettest month. It brings about 1.4 inches (36 mm) of rain over 6 days, while June is the driest. June brings the most sunshine, averaging 13.9 hours of sun a day. Snow falls on about 3 days in a typical year, mostly from February through March.
Season by season
Spring (March through May)
Spring in St. George is pleasantly warm, with daytime highs averaging 76°F (25°C) and nights around 52°F (11°C); rain falls on about 10 days over the three months.
Summer (June through August)
Summer in St. George is intensely hot, with daytime highs averaging 100°F (38°C) and nights around 77°F (25°C); precipitation is infrequent.
Fall (September through November)
Fall in St. George is mild and warm, with daytime highs averaging 78°F (26°C) and nights around 55°F (13°C); precipitation is infrequent.
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 falls on about 16 days over the three months, plus around 2 snowy days.
Average temperatures in St. George by month
Monthly averages for St. George based on 2015–2024 weather data.
July is the hottest month in St. George, with average highs of 103°F (39°C) and overnight lows near 80°F (26°C). In the past decade the temperature has peaked at 116°F (46°C).
What is the coldest month in St. George?
January is the coldest month, with highs averaging 53°F (11°C) and lows around 35°F (2°C). The lowest reading in recent years was 16°F (-9°C).
What is the rainiest month in St. George?
January is typically the wettest month, averaging 1.4 inches (36 mm) of precipitation across about 6 days. June is usually the driest.
Does it snow in St. George?
Yes. St. George averages about 3 days of snowfall a year, concentrated February through March.
What is the best time to visit St. George?
The best time to visit St. George is generally March to April and October to November, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 71°F (22°C).
How sunny is St. George?
St. George averages 11.0 hours of sunshine per day across the year. June is the sunniest month at about 13.9 hours of sun a day.
Is St. George humid?
Relative humidity in St. George averages about 34% over the year, which feels dry. The most comfortable months tend to fall in the drier part of the year.