Climate averages 1991–2020
Salt Lake City weather
in August.
A hot, very dry month: the 2nd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Salt Lake City: daytime highs average 31.4°C and nights cool to about 17.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 12 mm of rain on roughly 3 days, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 48 min on an average August day.
The nearest other city in this atlas is West Valley City (12 km away). In August its highs average 31.5°C, about as warm as Salt Lake City, with 12 mm of rain.
Among the 498 cities listed in the United States, Salt Lake City ranks joint 150th of 498 for the warmest August highs and joint 118th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Salt Lake City is 1.5°C warmer than that mean.
From August to September, average highs fall by 6.1°C to 25.3°C, and monthly rainfall rises from 12 mm to 34 mm.
The annual picture
August in context
Monthly precipitation
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
Salt Lake City climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.0°C-7.3°C | -7.3°C | 52 | 9.7 | 9.610 h |
| February | 4.2°C-5.2°C | -5.2°C | 45 | 8.2 | 10.611 h |
| March | 9.6°C-1.4°C | -1.4°C | 50 | 9.5 | 11.912 h |
| April | 14.1°C2.8°C | 2.8°C | 67 | 11.2 | 13.313 h |
| May | 20.1°C7.7°C | 7.7°C | 56 | 9.1 | 14.414 h |
| June | 26.6°C12.9°C | 12.9°C | 27 | 4.4 | 15.015 h |
| July | 32.4°C17.7°C | 17.7°C | 11 | 2.8 | 14.815 h |
| August, selected | 31.4°C17.3°C | 17.3°C | 12 | 3.4 | 13.814 h |
| September | 25.3°C12.1°C | 12.1°C | 34 | 4.7 | 12.513 h |
| October | 17.0°C5.4°C | 5.4°C | 45 | 6.6 | 11.211 h |
| November | 8.7°C-1.8°C | -1.8°C | 44 | 8.2 | 10.010 h |
| December | 2.3°C-7.3°C | -7.3°C | 49 | 8.9 | 9.39 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
August in nearby cities
- West Valley City in AugustUnited States · 12 kmHigh 31.5°C · Low 17.7°C · 12 mm rain
- West Jordan in AugustUnited States · 17 kmHigh 32.3°C · Low 17.1°C · 12 mm rain
- Layton in AugustUnited States · 34 kmHigh 30.2°C · Low 16.4°C · 9.4 mm rain
- Ogden in AugustUnited States · 52 kmHigh 30.4°C · Low 16.4°C · 11 mm rain
- Orem in AugustUnited States · 54 kmHigh 30.3°C · Low 17.5°C · 8.0 mm rain
- Provo in AugustUnited States · 62 kmHigh 30.2°C · Low 18.3°C · 8.0 mm rain
- Saint George in AugustUnited States · 432 kmHigh 35.6°C · Low 24.8°C · 14 mm rain
- Boise in AugustUnited States · 476 kmHigh 31.9°C · Low 17.4°C · 3.3 mm rain
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 Salt Lake City) is explained once on the Salt Lake City year overview and on the Sources, method and limits page.
West Valley City lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.