Poplar Bluff weather in September: Poplar Bluff, Missouri: normal highs, lows, rain and records for September
Poplar Bluff in September has a normal high of 82°F and a normal low of 59°F, a daily mean of 71°F, falling from 86°F on the 1st to 78°F by the 30th. Measurable precipitation falls on 12 days in a normal September, 3.98 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 15°C, 101 mm of precipitation in September.
- NOAA stationPoplar Bluff Municipal Airport
- Station IDUSW00003975
- Location36.77°N 90.32°W
- Elevation327 ft (100 m)
- Population16,177
- Jan 45° 28°
- Feb 50° 31°
- Mar 59° 39°
- Apr 70° 48°
- May 79° 58°
- Jun 87° 66°
- Jul 89° 70°
- Aug 88° 67°
- Sep 82° 59°
- Oct 72° 47°
- Nov 58° 37°
- Dec 47° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Poplar Bluff in September?
The normal high is 82°F and the normal low 59°F, for a daily mean of 70.6°F. September is 7.1°F cooler than August and 11.1°F warmer than October. September is the 4th warmest month of the year in Poplar Bluff and the 6th wettest. Across the month the normal high falls 8°F, from 86°F on September 1 to 78°F on September 30. From one year to the next September's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 68°F and 73°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 40%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 86°F | 64°F | 40% | 15% |
| September 8 | 84°F | 62°F | 40% | 14% |
| September 15 | 83°F | 59°F | 39% | 14% |
| September 22 | 81°F | 57°F | 38% | 15% |
| September 30 | 78°F | 54°F | 35% | 16% |
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 | 86°F | 64°F | 40% | 15% | 13 h |
| September 2 | 86°F | 64°F | 40% | 15% | 13 h |
| September 3 | 85°F | 63°F | 40% | 15% | 13 h |
| September 4 | 85°F | 63°F | 40% | 15% | 12 h 50 min |
| September 5 | 85°F | 63°F | 40% | 15% | 12 h 50 min |
| September 6 | 85°F | 63°F | 40% | 15% | 12 h 50 min |
| September 7 | 85°F | 62°F | 40% | 14% | 12 h 50 min |
| September 8 | 84°F | 62°F | 40% | 14% | 12 h 40 min |
| September 9 | 84°F | 62°F | 39% | 14% | 12 h 40 min |
| September 10 | 84°F | 61°F | 39% | 14% | 12 h 40 min |
| September 11 | 84°F | 61°F | 39% | 14% | 12 h 40 min |
| September 12 | 83°F | 60°F | 39% | 14% | 12 h 40 min |
| September 13 | 83°F | 60°F | 39% | 14% | 12 h 30 min |
| September 14 | 83°F | 60°F | 39% | 14% | 12 h 30 min |
| September 15 | 83°F | 59°F | 39% | 14% | 12 h 30 min |
| September 16 | 82°F | 59°F | 38% | 15% | 12 h 30 min |
| September 17 | 82°F | 59°F | 38% | 15% | 12 h 20 min |
| September 18 | 82°F | 58°F | 38% | 15% | 12 h 20 min |
| September 19 | 81°F | 58°F | 38% | 15% | 12 h 20 min |
| September 20 | 81°F | 58°F | 38% | 15% | 12 h 20 min |
| September 21 | 81°F | 57°F | 38% | 15% | 12 h 10 min |
| September 22 | 81°F | 57°F | 38% | 15% | 12 h 10 min |
| September 23 | 80°F | 56°F | 37% | 15% | 12 h 10 min |
| September 24 | 80°F | 56°F | 37% | 15% | 12 h 10 min |
| September 25 | 80°F | 56°F | 37% | 15% | 12 h 10 min |
| September 26 | 79°F | 55°F | 37% | 15% | 12 h |
| September 27 | 79°F | 55°F | 36% | 15% | 12 h |
| September 28 | 79°F | 54°F | 36% | 15% | 12 h |
| September 29 | 78°F | 54°F | 36% | 16% | 12 h |
| September 30 | 78°F | 54°F | 35% | 16% | 11 h 50 min |
- Normal high
- 82°FSeptember average
- Normal low
- 59°FSeptember average
- Precipitation
- 3.98 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 6
- 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
- 22
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003975; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Poplar Bluff in September?
On a given September day the chance of 0.01 inch or more is 38% on average, highest around September 1 (40%). In all, 3.98 in falls on 12 days of a normal September, 1 of them with an inch or more.
In a normal September in Poplar Bluff, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003975.
How humid and windy is Poplar Bluff in September?
At 3 p.m. the normal temperature is 77°F with 45% relative humidity and a dew point of 54°F; at 6 a.m. it is 55°F with 89% humidity. The wind averages 4.8 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 55°F | 52°F | 89% | 3.2 mph | – |
| 9 a.m. | 66°F | 56°F | 69% | 6.0 mph | – |
| noon | 75°F | 55°F | 50% | 7.8 mph | – |
| 3 p.m. | 77°F | 54°F | 45% | 7.8 mph | – |
| 6 p.m. | 68°F | 57°F | 67% | 3.9 mph | – |
| 9 p.m. | 62°F | 56°F | 80% | 3.1 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003975. 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 Poplar Bluff?
The warmest September temperature on Poplar Bluff's official record (since 1893) is 108°F, on September 7, 1925; the coldest is 31°F, on September 30, 1899. The wettest September brought 11.38 in (1965).
The September mean against the 1991-2020 normal of 70.6°F: 2021 71.7°F (+1.1), 2022 71.0°F (+0.4), 2023 72.4°F (+1.8), 2024 72.7°F (+2.1), 2025 73.7°F (+3.1), 2026 79.2°F (+8.6). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.7°F | +1.1°F | 3.46 in |
| 2022 | 71.0°F | +0.4°F | 0.41 in |
| 2023 | 72.4°F | +1.8°F | 0.74 in |
| 2024 | 72.7°F | +2.1°F | 6.81 in |
| 2025 | 73.7°F | +3.1°F | 5.97 in |
| 2026 | 79.2°F | +8.6°F | 1.53 in |
Source: records: ACIS, NWS threaded record POFthr; recent months: ACIS, station USW00003975. Records and recent months use complete months only.
How does September in Poplar Bluff compare across Missouri?
Across the 134 places PlainClimate covers in Missouri, September normal highs run from 76°F in Unionville to 85°F in Kennett; Poplar Bluff's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Poplar Bluff in August88°F by day, 67°F at night
- Poplar Bluff in October72°F by day, 47°F at night
- Poplar Bluff through the yearEvery month, frost dates, records and recent years
- Missouri in SeptemberThe statewide normal and the warmest and coolest places
- Kennett: Missouri's warmest Septembernormal high 85°F