Climate averages 1991–2020
Saint George weather
in January.
A cool, fairly dry month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Saint George: daytime highs average 10.4°C and nights cool to about 0.1°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 35 mm of rain on roughly 5 days, which makes January a fairly dry month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 55 min on an average January day.
The nearest other city in this atlas is Henderson (172 km away). In January its highs average 14.6°C, 4.2°C warmer than Saint George, with 19 mm of rain.
Among the 498 cities listed in the United States, Saint George ranks joint 238th of 498 for the warmest January highs and joint 69th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Saint George is 0.9°C warmer than that mean.
From January to February, average highs rise by 2.4°C to 12.8°C, and monthly rainfall rises from 35 mm to 42 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Saint George climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 10.4°C0.1°C | 0.1°C | 35 | 5.1 | 9.910 h |
| February | 12.8°C1.9°C | 1.9°C | 42 | 6.2 | 10.811 h |
| March | 17.6°C5.8°C | 5.8°C | 34 | 5.6 | 11.912 h |
| April | 22.3°C9.9°C | 9.9°C | 18 | 3.0 | 13.113 h |
| May | 28.1°C15.7°C | 15.7°C | 8.5 | 2.1 | 14.114 h |
| June | 34.2°C21.7°C | 21.7°C | 3.2 | 0.5 | 14.715 h |
| July | 36.8°C25.9°C | 25.9°C | 9.7 | 2.1 | 14.414 h |
| August | 35.6°C24.8°C | 24.8°C | 14 | 2.8 | 13.614 h |
| September | 31.2°C19.2°C | 19.2°C | 20 | 2.7 | 12.512 h |
| October | 23.8°C11.8°C | 11.8°C | 25 | 3.4 | 11.311 h |
| November | 16.1°C4.9°C | 4.9°C | 22 | 3.2 | 10.210 h |
| December | 9.9°C0.2°C | 0.2°C | 28 | 4.8 | 9.710 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Henderson in JanuaryUnited States · 172 kmHigh 14.6°C · Low 5.5°C · 19 mm rain
- Las Vegas in JanuaryUnited States · 173 kmHigh 13.7°C · Low 3.7°C · 22 mm rain
- Paradise in JanuaryUnited States · 179 kmHigh 14.0°C · Low 4.4°C · 21 mm rain
- Spring Valley in JanuaryUnited States · 185 kmHigh 13.2°C · Low 3.1°C · 21 mm rain
- Enterprise in JanuaryUnited States · 191 kmHigh 13.0°C · Low 3.7°C · 21 mm rain
- Flagstaff in JanuaryUnited States · 274 kmHigh 5.7°C · Low -3.8°C · 47 mm rain
- Provo in JanuaryUnited States · 386 kmHigh 1.3°C · Low -8.3°C · 55 mm precipitation
- Orem in JanuaryUnited States · 391 kmHigh 1.3°C · Low -8.5°C · 55 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Saint George) is explained once on the Saint George year overview and on the Sources, method and limits page.