St. George, UT Climate & Monthly Averages
The climate of St. George
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.
Climate 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.
Monthly climate table
| 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% |
St. George month by month
St. George weather in January
January brings highs around 53°F (11°C), lows near 35°F (2°C), about 6 wet days - typically the coldest month and the wettest month of the year in St. George.
St. George weather in February
February brings highs around 58°F (15°C), lows near 37°F (3°C), about 5 wet days and roughly 1 snowy days.
St. George weather in March
March brings highs around 66°F (19°C), lows near 44°F (7°C), about 6 wet days.
St. George weather in April
April brings highs around 77°F (25°C), lows near 52°F (11°C), about 2 wet days.
St. George weather in May
May brings highs around 85°F (30°C), lows near 61°F (16°C), about 2 wet days.
St. George weather in June
June brings highs around 99°F (37°C), lows near 74°F (23°C), about 0 wet days - typically the driest month and the sunniest month of the year in St. George.
St. George weather in July
July brings highs around 103°F (39°C), lows near 80°F (26°C), about 2 wet days - typically the hottest month of the year in St. George.
St. George weather in August
August brings highs around 100°F (38°C), lows near 76°F (25°C), about 2 wet days.
St. George weather in September
September brings highs around 93°F (34°C), lows near 69°F (20°C), about 2 wet days.
St. George weather in October
October brings highs around 79°F (26°C), lows near 55°F (13°C), about 2 wet days.
St. George weather in November
November brings highs around 63°F (17°C), lows near 43°F (6°C), about 3 wet days.
St. George weather in December
December brings highs around 53°F (12°C), lows near 35°F (2°C), about 5 wet days.
Seasons in St. George
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.
Climate questions, answered
What is the average temperature in St. George?
Is St. George hot in summer?
Is St. George cold in winter?
How many rainy days does St. George get in a year?
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).
Pack for St. George with lightweight, breathable clothing and strong sun protection for the hot months; a warm jacket and layers for the cooler season. Evenings can feel noticeably cooler than afternoons - July nights average 80°F (26°C).
St. George temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.