Salt Lake City weather in September: Salt Lake City, Utah: normal highs, lows, rain and records for September
Salt Lake City in September has a normal high of 81°F and a normal low of 56°F, a daily mean of 68°F, falling from 87°F on the 1st to 74°F by the 30th. Measurable precipitation falls on 5 days in a normal September, 1.06 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 13°C, 27 mm of precipitation in September.
- 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 September?
The normal high is 81°F and the normal low 56°F, for a daily mean of 68.4°F. September is 10.7°F cooler than August and 13.8°F warmer than October. September is the 4th warmest month of the year in Salt Lake City and the 9th wettest. Across the month the normal high falls 13°F, from 87°F on September 1 to 74°F on September 30. From one year to the next September's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 66°F and 71°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 19%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 87°F | 62°F | 16% | 7% |
| September 8 | 84°F | 59°F | 17% | 8% |
| September 15 | 81°F | 57°F | 18% | 9% |
| September 22 | 78°F | 54°F | 19% | 10% |
| September 30 | 74°F | 50°F | 19% | 10% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 87°F | 62°F | 16% | 7% | 13 h 10 min |
| September 2 | 87°F | 62°F | 17% | 7% | 13 h 10 min |
| September 3 | 86°F | 61°F | 17% | 7% | 13 h |
| September 4 | 86°F | 61°F | 17% | 7% | 13 h |
| September 5 | 85°F | 61°F | 17% | 7% | 13 h |
| September 6 | 85°F | 60°F | 17% | 8% | 13 h |
| September 7 | 85°F | 60°F | 17% | 8% | 12 h 50 min |
| September 8 | 84°F | 59°F | 17% | 8% | 12 h 50 min |
| September 9 | 84°F | 59°F | 18% | 8% | 12 h 50 min |
| September 10 | 83°F | 59°F | 18% | 8% | 12 h 50 min |
| September 11 | 83°F | 58°F | 18% | 8% | 12 h 40 min |
| September 12 | 82°F | 58°F | 18% | 9% | 12 h 40 min |
| September 13 | 82°F | 57°F | 18% | 9% | 12 h 40 min |
| September 14 | 82°F | 57°F | 18% | 9% | 12 h 30 min |
| September 15 | 81°F | 57°F | 18% | 9% | 12 h 30 min |
| September 16 | 81°F | 56°F | 18% | 9% | 12 h 30 min |
| September 17 | 80°F | 56°F | 18% | 9% | 12 h 30 min |
| September 18 | 80°F | 55°F | 18% | 9% | 12 h 20 min |
| September 19 | 79°F | 55°F | 18% | 9% | 12 h 20 min |
| September 20 | 79°F | 55°F | 18% | 9% | 12 h 20 min |
| September 21 | 78°F | 54°F | 18% | 10% | 12 h 20 min |
| September 22 | 78°F | 54°F | 19% | 10% | 12 h 10 min |
| September 23 | 77°F | 53°F | 18% | 10% | 12 h 10 min |
| September 24 | 77°F | 53°F | 18% | 10% | 12 h 10 min |
| September 25 | 76°F | 52°F | 19% | 10% | 12 h 10 min |
| September 26 | 76°F | 52°F | 19% | 10% | 12 h |
| September 27 | 75°F | 52°F | 19% | 10% | 12 h |
| September 28 | 75°F | 51°F | 19% | 10% | 12 h |
| September 29 | 74°F | 51°F | 19% | 10% | 11 h 50 min |
| September 30 | 74°F | 50°F | 19% | 10% | 11 h 50 min |
- Normal high
- 81°FSeptember average
- Normal low
- 56°FSeptember average
- Precipitation
- 1.06 inmonth total
- Days with precipitation
- 50.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 18
- Sunshine
- 85%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 September?
On a given September day the chance of 0.01 inch or more is 18% on average, highest around September 30 (19%). In all, 1.06 in falls on 5 days of a normal September.
In a normal September in Salt Lake City, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024127.
How humid and windy is Salt Lake City in September?
At 3 p.m. the normal temperature is 71°F with 27% relative humidity and a dew point of 36°F; at 6 a.m. it is 52°F with 61% humidity. The wind averages 8.1 mph, most often from the 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. | 52°F | 39°F | 61% | 8.0 mph | 62% |
| 9 a.m. | 60°F | 39°F | 46% | 8.2 mph | 53% |
| noon | 69°F | 37°F | 31% | 8.5 mph | 45% |
| 3 p.m. | 71°F | 36°F | 27% | 10.1 mph | 48% |
| 6 p.m. | 66°F | 38°F | 35% | 7.9 mph | 52% |
| 9 p.m. | 59°F | 39°F | 48% | 7.3 mph | 62% |
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 September in Salt Lake City?
The warmest September temperature on Salt Lake City's official record (since 1874) is 107°F, on September 7, 2022; the coldest is 27°F, on September 18, 1965. The wettest September brought 7.04 in (1982); the snowiest, 4.0 inches (1971).
The September mean against the 1991-2020 normal of 68.4°F: 2021 70.3°F (+1.9), 2022 75.1°F (+6.7), 2023 70.8°F (+2.3), 2024 73.0°F (+4.6), 2025 72.2°F (+3.8), 2026 70.8°F (+2.4). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.3°F | +1.9°F | 0.17 in |
| 2022 | 75.1°F | +6.7°F | 0.76 in |
| 2023 | 70.8°F | +2.3°F | 0.91 in |
| 2024 | 73.0°F | +4.6°F | 0.42 in |
| 2025 | 72.2°F | +3.8°F | 0.42 in |
| 2026 | 70.8°F | +2.4°F | 1.01 in |
Source: records: ACIS, NWS threaded record SLCthr; recent months: ACIS, station USW00024127. Records and recent months use complete months only.
How does September in Salt Lake City compare across Utah?
Across the 97 places PlainClimate covers in Utah, September normal highs run from 61°F in Brian Head to 92°F in St. George; Salt Lake City's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Salt Lake City in August92°F by day, 67°F at night
- Salt Lake City in October66°F by day, 44°F at night
- Salt Lake City through the yearEvery month, frost dates, records and recent years
- Utah in SeptemberThe statewide normal and the warmest and coolest places
- St. George: Utah's warmest Septembernormal high 92°F