Sherman weather in September: Sherman, Texas: normal highs, lows, rain and records for September
Sherman in September has a normal high of 85°F and a normal low of 66°F, a daily mean of 76°F, falling from 90°F on the 1st to 81°F by the 30th. Measurable precipitation falls on 6 days in a normal September, 3.43 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 19°C, 87 mm of precipitation in September.
- NOAA stationSherman
- Station IDUSC00418274
- Location33.70°N 96.64°W
- Elevation760 ft (232 m)
- Population50,229
- Jan 53° 34°
- Feb 57° 37°
- Mar 65° 45°
- Apr 73° 53°
- May 80° 62°
- Jun 88° 70°
- Jul 93° 74°
- Aug 93° 73°
- Sep 85° 66°
- Oct 75° 55°
- Nov 63° 44°
- Dec 54° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sherman in September?
The normal high is 85°F and the normal low 66°F, for a daily mean of 75.8°F. September is 7.0°F cooler than August and 10.6°F warmer than October. September is the 4th warmest month of the year in Sherman and the 8th wettest. Across the month the normal high falls 9°F, from 90°F on September 1 to 81°F on September 30. From one year to the next September's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 73°F and 79°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 19%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 90°F | 70°F | 19% | 15% |
| September 8 | 88°F | 69°F | 19% | 15% |
| September 15 | 86°F | 66°F | 19% | 15% |
| September 22 | 84°F | 64°F | 19% | 14% |
| September 30 | 81°F | 61°F | 18% | 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 | 90°F | 70°F | 19% | 15% | 12 h 50 min |
| September 2 | 89°F | 70°F | 19% | 15% | 12 h 50 min |
| September 3 | 89°F | 70°F | 19% | 15% | 12 h 50 min |
| September 4 | 89°F | 70°F | 19% | 15% | 12 h 50 min |
| September 5 | 88°F | 69°F | 19% | 15% | 12 h 50 min |
| September 6 | 88°F | 69°F | 19% | 15% | 12 h 40 min |
| September 7 | 88°F | 69°F | 19% | 15% | 12 h 40 min |
| September 8 | 88°F | 69°F | 19% | 15% | 12 h 40 min |
| September 9 | 87°F | 68°F | 19% | 15% | 12 h 40 min |
| September 10 | 87°F | 68°F | 19% | 15% | 12 h 40 min |
| September 11 | 87°F | 68°F | 19% | 15% | 12 h 30 min |
| September 12 | 86°F | 67°F | 19% | 15% | 12 h 30 min |
| September 13 | 86°F | 67°F | 19% | 15% | 12 h 30 min |
| September 14 | 86°F | 67°F | 19% | 15% | 12 h 30 min |
| September 15 | 86°F | 66°F | 19% | 15% | 12 h 30 min |
| September 16 | 85°F | 66°F | 19% | 15% | 12 h 20 min |
| September 17 | 85°F | 66°F | 19% | 15% | 12 h 20 min |
| September 18 | 85°F | 65°F | 19% | 15% | 12 h 20 min |
| September 19 | 84°F | 65°F | 19% | 15% | 12 h 20 min |
| September 20 | 84°F | 65°F | 19% | 15% | 12 h 20 min |
| September 21 | 84°F | 64°F | 19% | 15% | 12 h 10 min |
| September 22 | 84°F | 64°F | 19% | 14% | 12 h 10 min |
| September 23 | 83°F | 64°F | 19% | 14% | 12 h 10 min |
| September 24 | 83°F | 63°F | 18% | 14% | 12 h 10 min |
| September 25 | 83°F | 63°F | 18% | 14% | 12 h 10 min |
| September 26 | 82°F | 63°F | 18% | 14% | 12 h |
| September 27 | 82°F | 62°F | 18% | 14% | 12 h |
| September 28 | 82°F | 62°F | 18% | 14% | 12 h |
| September 29 | 81°F | 62°F | 18% | 14% | 12 h |
| September 30 | 81°F | 61°F | 18% | 15% | 11 h 50 min |
- Normal high
- 85°FSeptember average
- Normal low
- 66°FSeptember average
- Precipitation
- 3.43 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 10
- Daylight
- 12 h 50 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 29
- Days at 80°F or more
- 25
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00418274; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sherman in September?
On a given September day the chance of 0.01 inch or more is 19% on average, highest around September 1 (19%). In all, 3.43 in falls on 6 days of a normal September, 1 of them with an inch or more.
In a normal September in Sherman, 10 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00418274.
What are the records for September in Sherman?
The warmest September temperature on this station's record (since 1897) is 107°F, on September 4, 1951; the coldest is 36°F, on September 27, 1942. The wettest September brought 12.91 in (1980).
The September mean against the 1991-2020 normal of 75.8°F: 2021 77.5°F (+1.7), 2022 78.3°F (+2.5), 2023 79.9°F (+4.1), 2024 76.5°F (+0.7), 2025 76.8°F (+1.0). 5 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 77.5°F | +1.7°F | 1.55 in |
| 2022 | 78.3°F | +2.5°F | 0.30 in |
| 2023 | 79.9°F | +4.1°F | 0.60 in |
| 2024 | 76.5°F | +0.7°F | 1.47 in |
| 2025 | 76.8°F | +1.0°F | 4.20 in |
Source: records: ACIS, station USC00418274; recent months: ACIS, station USC00418274. Records and recent months use complete months only.
How does September in Sherman compare across Texas?
Across the 321 places PlainClimate covers in Texas, September normal highs run from 81°F in Hart to 95°F in Presidio; Sherman's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.