Lexington weather in September: Lexington, Kentucky: normal highs, lows, rain and records for September
Lexington in September has a normal high of 80°F and a normal low of 58°F, a daily mean of 69°F, falling from 85°F on the 1st to 75°F by the 30th. Measurable precipitation falls on 8 days in a normal September, 3.42 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 15°C, 87 mm of precipitation in September.
- NOAA stationLexington Bluegrass Airport
- Station IDUSW00093820
- Location38.04°N 84.61°W
- Elevation980 ft (299 m)
- From the center8 miles
- Population329,437
- Jan 42° 25°
- Feb 47° 28°
- Mar 56° 36°
- Apr 67° 45°
- May 76° 55°
- Jun 84° 63°
- Jul 87° 67°
- Aug 86° 65°
- Sep 80° 58°
- Oct 69° 47°
- Nov 56° 36°
- Dec 46° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lexington in September?
The normal high is 80°F and the normal low 58°F, for a daily mean of 69.1°F. September is 6.6°F cooler than August and 11.3°F warmer than October. September is the 4th warmest month of the year in Lexington and the 10th wettest. Across the month the normal high falls 10°F, from 85°F on September 1 to 75°F on September 30. From one year to the next September's mean temperature typically moves about 3.1°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 66°F and 72°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 85°F | 63°F | 28% | 19% |
| September 8 | 83°F | 61°F | 27% | 18% |
| September 15 | 81°F | 58°F | 26% | 17% |
| September 22 | 78°F | 56°F | 26% | 17% |
| September 30 | 75°F | 53°F | 27% | 17% |
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 | 85°F | 63°F | 28% | 19% | 13 h |
| September 2 | 84°F | 62°F | 28% | 19% | 13 h |
| September 3 | 84°F | 62°F | 27% | 19% | 13 h |
| September 4 | 84°F | 62°F | 27% | 19% | 13 h |
| September 5 | 84°F | 62°F | 27% | 19% | 12 h 50 min |
| September 6 | 83°F | 61°F | 27% | 18% | 12 h 50 min |
| September 7 | 83°F | 61°F | 27% | 18% | 12 h 50 min |
| September 8 | 83°F | 61°F | 27% | 18% | 12 h 50 min |
| September 9 | 83°F | 60°F | 26% | 18% | 12 h 40 min |
| September 10 | 82°F | 60°F | 26% | 18% | 12 h 40 min |
| September 11 | 82°F | 60°F | 26% | 18% | 12 h 40 min |
| September 12 | 82°F | 60°F | 26% | 18% | 12 h 40 min |
| September 13 | 81°F | 59°F | 26% | 18% | 12 h 30 min |
| September 14 | 81°F | 59°F | 26% | 17% | 12 h 30 min |
| September 15 | 81°F | 58°F | 26% | 17% | 12 h 30 min |
| September 16 | 80°F | 58°F | 26% | 17% | 12 h 30 min |
| September 17 | 80°F | 58°F | 26% | 17% | 12 h 20 min |
| September 18 | 80°F | 57°F | 26% | 17% | 12 h 20 min |
| September 19 | 79°F | 57°F | 26% | 17% | 12 h 20 min |
| September 20 | 79°F | 57°F | 26% | 17% | 12 h 20 min |
| September 21 | 79°F | 56°F | 26% | 17% | 12 h 10 min |
| September 22 | 78°F | 56°F | 26% | 17% | 12 h 10 min |
| September 23 | 78°F | 56°F | 26% | 17% | 12 h 10 min |
| September 24 | 77°F | 55°F | 26% | 17% | 12 h 10 min |
| September 25 | 77°F | 55°F | 26% | 17% | 12 h 10 min |
| September 26 | 77°F | 54°F | 26% | 17% | 12 h |
| September 27 | 76°F | 54°F | 26% | 17% | 12 h |
| September 28 | 76°F | 54°F | 26% | 17% | 12 h |
| September 29 | 76°F | 53°F | 27% | 17% | 12 h |
| September 30 | 75°F | 53°F | 27% | 17% | 11 h 50 min |
- Normal high
- 80°FSeptember average
- Normal low
- 58°FSeptember average
- Precipitation
- 3.42 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 4
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 16
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093820; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lexington in September?
On a given September day the chance of 0.01 inch or more is 26% on average, highest around September 1 (28%). In all, 3.42 in falls on 8 days of a normal September, 1 of them with an inch or more.
In a normal September in Lexington, 4 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093820.
How humid and windy is Lexington in September?
At 3 p.m. the normal temperature is 73°F with 50% relative humidity and a dew point of 53°F; at 6 a.m. it is 56°F with 86% humidity. The wind averages 6.9 mph, most often from the west-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 56°F | 51°F | 86% | 5.8 mph | 69% |
| 9 a.m. | 62°F | 54°F | 75% | 7.7 mph | 68% |
| noon | 70°F | 54°F | 56% | 9.0 mph | 63% |
| 3 p.m. | 73°F | 53°F | 50% | 9.0 mph | 63% |
| 6 p.m. | 69°F | 53°F | 57% | 6.6 mph | 73% |
| 9 p.m. | 62°F | 53°F | 71% | 5.8 mph | 77% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093820. 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 Lexington?
The warmest September temperature on Lexington's official record (since 1872) is 103°F, on September 5, 1954; the coldest is 32°F, on September 30, 1899. The wettest September brought 10.42 in (2018).
The September mean against the 1991-2020 normal of 69.1°F: 2021 68.3°F (−0.8), 2022 69.1°F (at normal), 2023 71.4°F (+2.3), 2024 72.1°F (+3.0), 2025 70.3°F (+1.2), 2026 74.6°F (+5.5). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 68.3°F | −0.8°F | 3.15 in |
| 2022 | 69.1°F | at normal | 1.50 in |
| 2023 | 71.4°F | +2.3°F | 0.99 in |
| 2024 | 72.1°F | +3.0°F | 6.33 in |
| 2025 | 70.3°F | +1.2°F | 3.27 in |
| 2026 | 74.6°F | +5.5°F | 1.09 in |
Source: records: ACIS, NWS threaded record LEXthr; recent months: ACIS, station USW00093820. Records and recent months use complete months only.
How does September in Lexington compare across Kentucky?
Across the 68 places PlainClimate covers in Kentucky, September normal highs run from 76°F in Olive Hill to 85°F in Eddyville; Lexington's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.