League City weather in September: League City, Texas: normal highs, lows, rain and records for September
League City in September has a normal high of 88°F and a normal low of 72°F, a daily mean of 80°F, falling from 91°F on the 1st to 86°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 7.34 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 22°C, 186 mm of precipitation in September.
- NOAA stationHouston Nwso
- Station IDUSC00414333
- Location29.47°N 95.08°W
- Elevation19 ft (6 m)
- From the center2 miles
- Population118,456
- Jan 64° 46°
- Feb 67° 50°
- Mar 73° 56°
- Apr 78° 61°
- May 85° 69°
- Jun 90° 75°
- Jul 92° 76°
- Aug 92° 76°
- Sep 88° 72°
- Oct 82° 63°
- Nov 73° 53°
- Dec 66° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is League City in September?
The normal high is 88°F and the normal low 72°F, for a daily mean of 80.1°F. September is 4.0°F cooler than August and 8.0°F warmer than October. September is the 4th warmest month of the year in League City and the wettest. Across the month the normal high falls 5°F, from 91°F on September 1 to 86°F on September 30. From one year to the next September's mean temperature typically moves about 1.8°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 78°F and 82°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 38%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 75°F | 38% | 26% |
| September 8 | 90°F | 74°F | 37% | 26% |
| September 15 | 89°F | 72°F | 35% | 25% |
| September 22 | 87°F | 70°F | 32% | 23% |
| September 30 | 86°F | 68°F | 29% | 20% |
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 | 91°F | 75°F | 38% | 26% | 12 h 50 min |
| September 2 | 91°F | 75°F | 38% | 26% | 12 h 50 min |
| September 3 | 90°F | 75°F | 38% | 26% | 12 h 40 min |
| September 4 | 90°F | 74°F | 38% | 26% | 12 h 40 min |
| September 5 | 90°F | 74°F | 38% | 26% | 12 h 40 min |
| September 6 | 90°F | 74°F | 37% | 26% | 12 h 40 min |
| September 7 | 90°F | 74°F | 37% | 26% | 12 h 40 min |
| September 8 | 90°F | 74°F | 37% | 26% | 12 h 30 min |
| September 9 | 90°F | 74°F | 37% | 26% | 12 h 30 min |
| September 10 | 89°F | 73°F | 37% | 26% | 12 h 30 min |
| September 11 | 89°F | 73°F | 36% | 26% | 12 h 30 min |
| September 12 | 89°F | 73°F | 36% | 26% | 12 h 30 min |
| September 13 | 89°F | 73°F | 36% | 25% | 12 h 30 min |
| September 14 | 89°F | 72°F | 35% | 25% | 12 h 20 min |
| September 15 | 89°F | 72°F | 35% | 25% | 12 h 20 min |
| September 16 | 88°F | 72°F | 35% | 25% | 12 h 20 min |
| September 17 | 88°F | 72°F | 34% | 24% | 12 h 20 min |
| September 18 | 88°F | 71°F | 34% | 24% | 12 h 20 min |
| September 19 | 88°F | 71°F | 33% | 24% | 12 h 20 min |
| September 20 | 88°F | 71°F | 33% | 23% | 12 h 10 min |
| September 21 | 88°F | 71°F | 33% | 23% | 12 h 10 min |
| September 22 | 87°F | 70°F | 32% | 23% | 12 h 10 min |
| September 23 | 87°F | 70°F | 32% | 22% | 12 h 10 min |
| September 24 | 87°F | 70°F | 31% | 22% | 12 h 10 min |
| September 25 | 87°F | 69°F | 31% | 21% | 12 h 10 min |
| September 26 | 87°F | 69°F | 30% | 21% | 12 h |
| September 27 | 87°F | 69°F | 30% | 21% | 12 h |
| September 28 | 86°F | 69°F | 29% | 20% | 12 h |
| September 29 | 86°F | 68°F | 29% | 20% | 12 h |
| September 30 | 86°F | 68°F | 29% | 20% | 12 h |
- Normal high
- 88°FSeptember average
- Normal low
- 72°FSeptember average
- Precipitation
- 7.34 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 11
- 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
- 28
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00414333; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in League City in September?
On a given September day the chance of 0.01 inch or more is 34% on average, highest around September 1 (38%). In all, 7.34 in falls on 11 days of a normal September, 2 of them with an inch or more.
In a normal September in League City, 11 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00414333.
What are the records for September in League City?
The warmest September temperature on this station's record (since 1990) is 106°F, on September 4, 2000; the coldest is 50°F, on September 27, 1991. The wettest September brought 24.59 in (2018).
The September mean against the 1991-2020 normal of 80.1°F: 2021 79.5°F (−0.6), 2022 80.5°F (+0.4), 2023 84.1°F (+4.0), 2024 80.8°F (+0.7), 2025 81.0°F (+0.9), 2026 83.8°F (+3.7). 5 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.5°F | −0.6°F | 12.29 in |
| 2022 | 80.5°F | +0.4°F | 3.25 in |
| 2023 | 84.1°F | +4.0°F | 4.66 in |
| 2024 | 80.8°F | +0.7°F | 5.08 in |
| 2025 | 81.0°F | +0.9°F | 3.25 in |
| 2026 | 83.8°F | +3.7°F | 3.96 in |
Source: records: ACIS, station USC00414333; recent months: ACIS, station USC00414333. Records and recent months use complete months only.
How does September in League City 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; League City's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.