Opelika weather in September: Opelika, Alabama: normal highs, lows, rain and records for September
Opelika in September has a normal high of 84°F and a normal low of 63°F, a daily mean of 74°F, falling from 87°F on the 1st to 80°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 3.34 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 17°C, 85 mm of precipitation in September.
- NOAA stationOpelika
- Station IDUSC00016129
- Location32.66°N 85.45°W
- Elevation640 ft (195 m)
- Population35,005
- Jan 56° 33°
- Feb 60° 36°
- Mar 67° 42°
- Apr 74° 49°
- May 81° 58°
- Jun 87° 65°
- Jul 90° 69°
- Aug 89° 69°
- Sep 84° 63°
- Oct 75° 51°
- Nov 66° 40°
- Dec 58° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Opelika in September?
The normal high is 84°F and the normal low 63°F, for a daily mean of 73.5°F. September is 5.1°F cooler than August and 10.6°F warmer than October. September is the 4th warmest month of the year in Opelika and the 12th wettest. Across the month the normal high falls 7°F, from 87°F on September 1 to 80°F on September 30. From one year to the next September's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 72°F and 76°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 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 87°F | 67°F | 24% | 17% |
| September 8 | 86°F | 65°F | 22% | 16% |
| September 15 | 85°F | 63°F | 21% | 15% |
| September 22 | 83°F | 61°F | 20% | 15% |
| September 30 | 80°F | 58°F | 20% | 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 | 87°F | 67°F | 24% | 17% | 12 h 50 min |
| September 2 | 87°F | 67°F | 24% | 17% | 12 h 50 min |
| September 3 | 87°F | 66°F | 24% | 17% | 12 h 50 min |
| September 4 | 87°F | 66°F | 23% | 17% | 12 h 50 min |
| September 5 | 87°F | 66°F | 23% | 17% | 12 h 40 min |
| September 6 | 86°F | 66°F | 23% | 17% | 12 h 40 min |
| September 7 | 86°F | 66°F | 22% | 16% | 12 h 40 min |
| September 8 | 86°F | 65°F | 22% | 16% | 12 h 40 min |
| September 9 | 86°F | 65°F | 22% | 16% | 12 h 40 min |
| September 10 | 86°F | 65°F | 22% | 16% | 12 h 30 min |
| September 11 | 86°F | 65°F | 21% | 16% | 12 h 30 min |
| September 12 | 85°F | 64°F | 21% | 16% | 12 h 30 min |
| September 13 | 85°F | 64°F | 21% | 16% | 12 h 30 min |
| September 14 | 85°F | 64°F | 21% | 16% | 12 h 30 min |
| September 15 | 85°F | 63°F | 21% | 15% | 12 h 30 min |
| September 16 | 84°F | 63°F | 21% | 15% | 12 h 20 min |
| September 17 | 84°F | 63°F | 21% | 15% | 12 h 20 min |
| September 18 | 84°F | 62°F | 21% | 15% | 12 h 20 min |
| September 19 | 84°F | 62°F | 20% | 15% | 12 h 20 min |
| September 20 | 83°F | 62°F | 20% | 15% | 12 h 20 min |
| September 21 | 83°F | 61°F | 20% | 15% | 12 h 10 min |
| September 22 | 83°F | 61°F | 20% | 15% | 12 h 10 min |
| September 23 | 83°F | 61°F | 20% | 15% | 12 h 10 min |
| September 24 | 82°F | 60°F | 20% | 15% | 12 h 10 min |
| September 25 | 82°F | 60°F | 20% | 15% | 12 h 10 min |
| September 26 | 82°F | 60°F | 20% | 15% | 12 h |
| September 27 | 81°F | 59°F | 20% | 15% | 12 h |
| September 28 | 81°F | 59°F | 20% | 15% | 12 h |
| September 29 | 81°F | 58°F | 20% | 15% | 12 h |
| September 30 | 80°F | 58°F | 20% | 15% | 12 h |
- Normal high
- 84°FSeptember average
- Normal low
- 63°FSeptember average
- Precipitation
- 3.34 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 6
- Daylight
- 12 h 50 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 24
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00016129; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Opelika in September?
On a given September day the chance of 0.01 inch or more is 21% on average, highest around September 1 (24%). In all, 3.34 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Opelika, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00016129.
What are the records for September in Opelika?
The warmest September temperature on this station's record (since 1957) is 99°F, on September 1, 1957; the coldest is 36°F, on September 30, 1967. The wettest September brought 10.23 in (2024).
The September mean against the 1991-2020 normal of 73.5°F: 2021 72.1°F (−1.4), 2022 71.4°F (−2.1), 2023 72.5°F (−1.0), 2024 74.4°F (+0.9), 2025 73.7°F (+0.2). 2 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 72.1°F | −1.4°F | 7.03 in |
| 2022 | 71.4°F | −2.1°F | 2.54 in |
| 2023 | 72.5°F | −1.0°F | 1.65 in |
| 2024 | 74.4°F | +0.9°F | 10.23 in |
| 2025 | 73.7°F | +0.2°F | 3.03 in |
Source: records: ACIS, station USC00016129; recent months: ACIS, station USC00016129. Records and recent months use complete months only.
How does September in Opelika compare across Alabama?
Across the 80 places PlainClimate covers in Alabama, September normal highs run from 81°F in Valley Head to 90°F in Eufaula; Opelika's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.