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Last updated: October 30, 2026. Figures come from the official sources linked in each section; rules change, so confirm with the agency before you rely on them.
"How cold does it get in St. George, Utah?" and "what is the hottest month?" are top local searches. Here are NOAA's official 1991–2020 climate normals for the St. George station.
| Month | Avg high | Avg low | Precipitation |
|---|---|---|---|
| January | 54.0°F | 28.4°F | 1.22 in |
| February | 59.3°F | 32.4°F | 1.38 in |
| March | 67.8°F | 39.0°F | 1.02 in |
| April | 75.0°F | 45.7°F | 0.66 in |
| May | 85.4°F | 55.5°F | 0.33 in |
| June | 96.4°F | 64.5°F | 0.16 in |
| July | 101.9°F | 71.7°F | 0.50 in |
| August | 99.9°F | 70.3°F | 1.07 in |
| September | 92.4°F | 60.7°F | 0.67 in |
| October | 78.8°F | 47.3°F | 0.77 in |
| November | 63.8°F | 34.7°F | 0.67 in |
| December | 53.0°F | 27.9°F | 0.86 in |
Source: NOAA NCEI 1991–2020 monthly normals, station USC00427516. Total normal precipitation is about 9.3 inches a year.
Quick answers
- Hottest month: July, with an average high of 101.9°F.
- Coldest month: December, with an average low of 27.9°F; January highs average 54.0°F.
- Wettest months: February (1.38 in) and January (1.22 in).
- Mildest stretch for hiking: March–April and October–November, with highs between about 64°F and 79°F.
Plan your outings with the Snow Canyon and Zion guide and the events calendar, and see Moving to St. George & Ivins.
Visiting to scout neighborhoods? Spring and fall are lovely for touring homes, and I'm happy to plan a day around it. Reach out to Robert at Robert@OwnUtah.com or 801-737-3333.
Frequently asked questions
What is the hottest month in St. George, Utah?
July, with an average high of 101.9°F, per NOAA's 1991–2020 normals.
How cold does it get in St. George, Utah?
December averages a low of 27.9°F and January a low of 28.4°F, with January highs around 54.0°F (NOAA 1991–2020 normals).
How much rain does St. George get?
About 9.3 inches of precipitation in a normal year, per NOAA.