Salt Lake City weather in August: Salt Lake City, Utah: normal highs, lows, rain and records for August
Salt Lake City in August has a normal high of 92°F and a normal low of 67°F, a daily mean of 79°F, falling from 95°F on the 1st to 87°F by the 31st. Measurable precipitation falls on 5 days in a normal August, 0.58 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 19°C, 15 mm of precipitation in August.
- NOAA stationSalt Lake City International Airport
- Station IDUSW00024127
- Location40.78°N 111.97°W
- Elevation4,225 ft (1,288 m)
- From the center2 miles
- Population217,783
- Jan 39° 24°
- Feb 45° 29°
- Mar 55° 36°
- Apr 62° 42°
- May 73° 50°
- Jun 84° 59°
- Jul 94° 68°
- Aug 92° 67°
- Sep 81° 56°
- Oct 66° 44°
- Nov 51° 33°
- Dec 39° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Salt Lake City in August?
The normal high is 92°F and the normal low 67°F, for a daily mean of 79.1°F. August is 2.0°F cooler than July and 10.7°F warmer than September. August is the 2nd warmest month of the year in Salt Lake City and the 11th wettest. Across the month the normal high falls 8°F, from 95°F on August 1 to 87°F on August 31. From one year to the next August's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 77°F and 81°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 16%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 95°F | 70°F | 15% | 6% |
| August 8 | 94°F | 69°F | 15% | 5% |
| August 15 | 92°F | 67°F | 15% | 5% |
| August 22 | 90°F | 65°F | 16% | 6% |
| August 31 | 87°F | 62°F | 16% | 7% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 95°F | 70°F | 15% | 6% | 14 h 20 min |
| August 2 | 95°F | 70°F | 15% | 6% | 14 h 20 min |
| August 3 | 95°F | 70°F | 15% | 5% | 14 h 20 min |
| August 4 | 95°F | 69°F | 15% | 5% | 14 h 20 min |
| August 5 | 95°F | 69°F | 15% | 5% | 14 h 10 min |
| August 6 | 94°F | 69°F | 15% | 5% | 14 h 10 min |
| August 7 | 94°F | 69°F | 15% | 5% | 14 h 10 min |
| August 8 | 94°F | 69°F | 15% | 5% | 14 h 10 min |
| August 9 | 94°F | 69°F | 15% | 5% | 14 h |
| August 10 | 94°F | 68°F | 15% | 5% | 14 h |
| August 11 | 93°F | 68°F | 15% | 5% | 14 h |
| August 12 | 93°F | 68°F | 15% | 5% | 14 h |
| August 13 | 93°F | 68°F | 15% | 5% | 14 h |
| August 14 | 93°F | 67°F | 15% | 5% | 13 h 50 min |
| August 15 | 92°F | 67°F | 15% | 5% | 13 h 50 min |
| August 16 | 92°F | 67°F | 15% | 5% | 13 h 50 min |
| August 17 | 92°F | 67°F | 15% | 5% | 13 h 50 min |
| August 18 | 91°F | 66°F | 16% | 6% | 13 h 40 min |
| August 19 | 91°F | 66°F | 16% | 6% | 13 h 40 min |
| August 20 | 91°F | 66°F | 16% | 6% | 13 h 40 min |
| August 21 | 91°F | 66°F | 16% | 6% | 13 h 40 min |
| August 22 | 90°F | 65°F | 16% | 6% | 13 h 30 min |
| August 23 | 90°F | 65°F | 16% | 6% | 13 h 30 min |
| August 24 | 90°F | 65°F | 16% | 6% | 13 h 30 min |
| August 25 | 89°F | 64°F | 16% | 6% | 13 h 30 min |
| August 26 | 89°F | 64°F | 16% | 6% | 13 h 20 min |
| August 27 | 89°F | 64°F | 16% | 6% | 13 h 20 min |
| August 28 | 88°F | 63°F | 16% | 6% | 13 h 20 min |
| August 29 | 88°F | 63°F | 16% | 7% | 13 h 20 min |
| August 30 | 88°F | 63°F | 16% | 7% | 13 h 10 min |
| August 31 | 87°F | 62°F | 16% | 7% | 13 h 10 min |
- Normal high
- 92°FAugust average
- Normal low
- 67°FAugust average
- Precipitation
- 0.58 inmonth total
- Days with precipitation
- 50.01 inch or more
- Days at 90°F or more
- 21
- Daylight
- 14 h 20 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024127; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Salt Lake City in August?
On a given August day the chance of 0.01 inch or more is 16% on average, highest around August 30 (16%). In all, 0.58 in falls on 5 days of a normal August.
In a normal August in Salt Lake City, 21 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024127.
How humid and windy is Salt Lake City in August?
At 3 p.m. the normal temperature is 86°F with 21% relative humidity and a dew point of 41°F; at 6 a.m. it is 64°F with 50% humidity. The wind averages 8.9 mph, most often from the north-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 64°F | 45°F | 50% | 8.0 mph | 52% |
| 9 a.m. | 74°F | 45°F | 36% | 8.7 mph | 51% |
| noon | 83°F | 43°F | 24% | 9.7 mph | 44% |
| 3 p.m. | 86°F | 41°F | 21% | 10.9 mph | 42% |
| 6 p.m. | 83°F | 41°F | 22% | 9.7 mph | 46% |
| 9 p.m. | 73°F | 44°F | 36% | 7.9 mph | 55% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024127. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Salt Lake City?
The warmest August temperature on Salt Lake City's official record (since 1874) is 106°F, on August 4, 1994; the coldest is 37°F, on August 29, 1964. The wettest August brought 3.66 in (1968).
The August mean against the 1991-2020 normal of 79.1°F: 2021 76.8°F (−2.3), 2022 82.2°F (+3.1), 2023 78.8°F (−0.3), 2024 80.0°F (+0.9), 2025 79.6°F (+0.5), 2026 81.7°F (+2.6). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.8°F | −2.3°F | 2.29 in |
| 2022 | 82.2°F | +3.1°F | 1.13 in |
| 2023 | 78.8°F | −0.3°F | 2.75 in |
| 2024 | 80.0°F | +0.9°F | 1.15 in |
| 2025 | 79.6°F | +0.5°F | 0.76 in |
| 2026 | 81.7°F | +2.6°F | 1.84 in |
Source: records: ACIS, NWS threaded record SLCthr; recent months: ACIS, station USW00024127. Records and recent months use complete months only.
How does August in Salt Lake City compare across Utah?
Across the 97 places PlainClimate covers in Utah, August normal highs run from 69°F in Brian Head to 100°F in St. George; Salt Lake City's is 92°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Salt Lake City in July94°F by day, 68°F at night
- Salt Lake City in September81°F by day, 56°F at night
- Salt Lake City through the yearEvery month, frost dates, records and recent years
- Utah in AugustThe statewide normal and the warmest and coolest places
- St. George: Utah's warmest Augustnormal high 100°F