Bartlesville weather in September: Bartlesville, Oklahoma: normal highs, lows, rain and records for September
Bartlesville in September has a normal high of 84°F and a normal low of 58°F, a daily mean of 71°F, falling from 89°F on the 1st to 79°F by the 30th. Measurable precipitation falls on 8 days in a normal September, 3.43 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 14°C, 87 mm of precipitation in September.
- NOAA stationBartlesville F P Field
- Station IDUSW00003959
- Location36.77°N 96.03°W
- Elevation715 ft (218 m)
- Population38,355
- Jan 47° 22°
- Feb 52° 26°
- Mar 62° 35°
- Apr 71° 45°
- May 79° 55°
- Jun 88° 65°
- Jul 93° 69°
- Aug 92° 66°
- Sep 84° 58°
- Oct 73° 45°
- Nov 60° 34°
- Dec 49° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Bartlesville in September?
The normal high is 84°F and the normal low 58°F, for a daily mean of 70.9°F. September is 8.4°F cooler than August and 11.9°F warmer than October. September is the 4th warmest month of the year in Bartlesville and the 6th wettest. Across the month the normal high falls 10°F, from 89°F on September 1 to 79°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 68°F and 74°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 27%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 89°F | 63°F | 26% | 16% |
| September 8 | 87°F | 61°F | 26% | 17% |
| September 15 | 85°F | 58°F | 27% | 17% |
| September 22 | 82°F | 55°F | 27% | 17% |
| September 30 | 79°F | 52°F | 26% | 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 | 89°F | 63°F | 26% | 16% | 13 h |
| September 2 | 89°F | 63°F | 26% | 16% | 13 h |
| September 3 | 89°F | 63°F | 26% | 16% | 13 h |
| September 4 | 88°F | 62°F | 26% | 16% | 12 h 50 min |
| September 5 | 88°F | 62°F | 26% | 17% | 12 h 50 min |
| September 6 | 88°F | 62°F | 26% | 17% | 12 h 50 min |
| September 7 | 87°F | 61°F | 26% | 17% | 12 h 50 min |
| September 8 | 87°F | 61°F | 26% | 17% | 12 h 40 min |
| September 9 | 87°F | 60°F | 26% | 17% | 12 h 40 min |
| September 10 | 86°F | 60°F | 26% | 17% | 12 h 40 min |
| September 11 | 86°F | 60°F | 26% | 17% | 12 h 40 min |
| September 12 | 86°F | 59°F | 27% | 17% | 12 h 40 min |
| September 13 | 85°F | 59°F | 27% | 17% | 12 h 30 min |
| September 14 | 85°F | 59°F | 27% | 17% | 12 h 30 min |
| September 15 | 85°F | 58°F | 27% | 17% | 12 h 30 min |
| September 16 | 84°F | 58°F | 27% | 17% | 12 h 30 min |
| September 17 | 84°F | 57°F | 27% | 17% | 12 h 20 min |
| September 18 | 83°F | 57°F | 27% | 17% | 12 h 20 min |
| September 19 | 83°F | 56°F | 27% | 17% | 12 h 20 min |
| September 20 | 83°F | 56°F | 27% | 17% | 12 h 20 min |
| September 21 | 82°F | 56°F | 27% | 17% | 12 h 10 min |
| September 22 | 82°F | 55°F | 27% | 17% | 12 h 10 min |
| September 23 | 82°F | 55°F | 27% | 17% | 12 h 10 min |
| September 24 | 81°F | 54°F | 27% | 17% | 12 h 10 min |
| September 25 | 81°F | 54°F | 27% | 16% | 12 h 10 min |
| September 26 | 80°F | 53°F | 26% | 16% | 12 h |
| September 27 | 80°F | 53°F | 26% | 16% | 12 h |
| September 28 | 80°F | 53°F | 26% | 16% | 12 h |
| September 29 | 79°F | 52°F | 26% | 16% | 12 h |
| September 30 | 79°F | 52°F | 26% | 16% | 11 h 50 min |
- Normal high
- 84°FSeptember average
- Normal low
- 58°FSeptember average
- Precipitation
- 3.43 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 9
- 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
- 23
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003959; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Bartlesville in September?
On a given September day the chance of 0.01 inch or more is 26% on average, highest around September 14 (27%). In all, 3.43 in falls on 8 days of a normal September, 1 of them with an inch or more.
In a normal September in Bartlesville, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003959.
What are the records for September in Bartlesville?
The warmest September temperature on this station's record (since 1920) is 110°F, on September 3, 2012; the coldest is 29°F, on September 23, 1995. The wettest September brought 14.61 in (1986).
The September mean against the 1991-2020 normal of 70.9°F: 2021 75.3°F (+4.4), 2022 73.4°F (+2.5), 2023 73.7°F (+2.8), 2024 72.8°F (+1.9), 2025 72.2°F (+1.3), 2026 80.5°F (+9.6). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.3°F | +4.4°F | 1.85 in |
| 2022 | 73.4°F | +2.5°F | 0.87 in |
| 2023 | 73.7°F | +2.8°F | 1.23 in |
| 2024 | 72.8°F | +1.9°F | 0.31 in |
| 2025 | 72.2°F | +1.3°F | 4.26 in |
| 2026 | 80.5°F | +9.6°F | 2.98 in |
Source: records: ACIS, station USW00003959; recent months: ACIS, station USW00003959. Records and recent months use complete months only.
How does September in Bartlesville compare across Oklahoma?
Across the 134 places PlainClimate covers in Oklahoma, September normal highs run from 82°F in Arnett to 89°F in Grandfield; Bartlesville's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Bartlesville in August92°F by day, 66°F at night
- Bartlesville in October73°F by day, 45°F at night
- Bartlesville through the yearEvery month, frost dates, records and recent years
- Oklahoma in SeptemberThe statewide normal and the warmest and coolest places
- Grandfield: Oklahoma's warmest Septembernormal high 89°F