Little Rock weather in September: Little Rock, Arkansas: normal highs, lows, rain and records for September
Little Rock in September has a normal high of 85°F and a normal low of 63°F, a daily mean of 74°F, falling from 89°F on the 1st to 80°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 3.01 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 17°C, 76 mm of precipitation in September.
- NOAA stationLittle Rock Airport Adams Field
- Station IDUSW00013963
- Location34.73°N 92.24°W
- Elevation258 ft (79 m)
- From the center7 miles
- Population204,774
- Jan 51° 31°
- Feb 55° 34°
- Mar 64° 42°
- Apr 73° 50°
- May 81° 59°
- Jun 88° 68°
- Jul 92° 71°
- Aug 92° 70°
- Sep 85° 63°
- Oct 74° 51°
- Nov 62° 40°
- Dec 53° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Little Rock in September?
The normal high is 85°F and the normal low 63°F, for a daily mean of 74.0°F. September is 6.8°F cooler than August and 11.4°F warmer than October. September is the 4th warmest month of the year in Little Rock and the 12th wettest. Across the month the normal high falls 9°F, from 89°F on September 1 to 80°F on September 30. From one year to the next September's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 71°F and 77°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 23%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 89°F | 68°F | 23% | 16% |
| September 8 | 87°F | 66°F | 23% | 15% |
| September 15 | 85°F | 63°F | 23% | 15% |
| September 22 | 83°F | 61°F | 23% | 15% |
| September 30 | 80°F | 57°F | 22% | 15% |
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 | 89°F | 68°F | 23% | 16% | 13 h |
| September 2 | 89°F | 67°F | 23% | 16% | 12 h 50 min |
| September 3 | 89°F | 67°F | 23% | 15% | 12 h 50 min |
| September 4 | 88°F | 67°F | 23% | 15% | 12 h 50 min |
| September 5 | 88°F | 67°F | 23% | 15% | 12 h 50 min |
| September 6 | 88°F | 66°F | 23% | 15% | 12 h 50 min |
| September 7 | 88°F | 66°F | 23% | 15% | 12 h 40 min |
| September 8 | 87°F | 66°F | 23% | 15% | 12 h 40 min |
| September 9 | 87°F | 65°F | 23% | 15% | 12 h 40 min |
| September 10 | 87°F | 65°F | 23% | 15% | 12 h 40 min |
| September 11 | 87°F | 65°F | 23% | 15% | 12 h 40 min |
| September 12 | 86°F | 64°F | 23% | 15% | 12 h 30 min |
| September 13 | 86°F | 64°F | 23% | 15% | 12 h 30 min |
| September 14 | 86°F | 64°F | 23% | 15% | 12 h 30 min |
| September 15 | 85°F | 63°F | 23% | 15% | 12 h 30 min |
| September 16 | 85°F | 63°F | 23% | 15% | 12 h 20 min |
| September 17 | 85°F | 63°F | 23% | 15% | 12 h 20 min |
| September 18 | 85°F | 62°F | 23% | 15% | 12 h 20 min |
| September 19 | 84°F | 62°F | 23% | 15% | 12 h 20 min |
| September 20 | 84°F | 61°F | 23% | 15% | 12 h 20 min |
| September 21 | 84°F | 61°F | 23% | 15% | 12 h 10 min |
| September 22 | 83°F | 61°F | 23% | 15% | 12 h 10 min |
| September 23 | 83°F | 60°F | 23% | 15% | 12 h 10 min |
| September 24 | 83°F | 60°F | 23% | 15% | 12 h 10 min |
| September 25 | 82°F | 59°F | 22% | 15% | 12 h 10 min |
| September 26 | 82°F | 59°F | 22% | 15% | 12 h |
| September 27 | 82°F | 59°F | 22% | 15% | 12 h |
| September 28 | 81°F | 58°F | 22% | 15% | 12 h |
| September 29 | 81°F | 58°F | 22% | 15% | 12 h |
| September 30 | 80°F | 57°F | 22% | 15% | 11 h 50 min |
- Normal high
- 85°FSeptember average
- Normal low
- 63°FSeptember average
- Precipitation
- 3.01 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 11
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 29
- Days at 80°F or more
- 25
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013963; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Little Rock in September?
On a given September day the chance of 0.01 inch or more is 23% on average, highest around September 1 (23%). In all, 3.01 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Little Rock, 11 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013963.
How humid and windy is Little Rock in September?
At 3 p.m. the normal temperature is 80°F with 44% relative humidity and a dew point of 56°F; at 6 a.m. it is 61°F with 85% humidity. The wind averages 6.1 mph, most often from the east-northeast in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 61°F | 56°F | 85% | 4.5 mph | 57% |
| 9 a.m. | 70°F | 58°F | 66% | 7.1 mph | 53% |
| noon | 78°F | 57°F | 48% | 8.6 mph | 46% |
| 3 p.m. | 80°F | 56°F | 44% | 8.8 mph | 40% |
| 6 p.m. | 74°F | 57°F | 56% | 6.5 mph | 52% |
| 9 p.m. | 67°F | 58°F | 73% | 4.7 mph | 66% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013963. 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 Little Rock?
The warmest September temperature on Little Rock's official record (since 1879) is 106°F, on September 1, 1947; the coldest is 37°F, on September 27, 1942. The wettest September brought 10.23 in (1898).
The September mean against the 1991-2020 normal of 74.0°F: 2021 76.4°F (+2.4), 2022 77.3°F (+3.3), 2023 79.0°F (+5.0), 2024 77.1°F (+3.1), 2025 76.7°F (+2.7), 2026 83.2°F (+9.2). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.4°F | +2.4°F | 1.10 in |
| 2022 | 77.3°F | +3.3°F | 0.63 in |
| 2023 | 79.0°F | +5.0°F | 0.46 in |
| 2024 | 77.1°F | +3.1°F | 1.67 in |
| 2025 | 76.7°F | +2.7°F | 3.26 in |
| 2026 | 83.2°F | +9.2°F | 0.39 in |
Source: records: ACIS, NWS threaded record LITthr; recent months: ACIS, station USW00013963. Records and recent months use complete months only.
How does September in Little Rock compare across Arkansas?
Across the 86 places PlainClimate covers in Arkansas, September normal highs run from 75°F in Deer to 90°F in Crossett; Little Rock's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Little Rock in August92°F by day, 70°F at night
- Little Rock in October74°F by day, 51°F at night
- Little Rock through the yearEvery month, frost dates, records and recent years
- Arkansas in SeptemberThe statewide normal and the warmest and coolest places
- Crossett: Arkansas's warmest Septembernormal high 90°F