Sugar Land, TX weather in September
September in Sugar Land: hot and oppressively humid, with some rain. Highs 90°F, lows 72°F, about 9 wet days.
- Normal high
- 90°F
- Normal low
- 72°F
- Wet days
- 9
- 5.7 in total
- Muggy days
- 25
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 92°F | 88°F |
| Normal low | 75°F | 68°F |
| Chance of a wet day | 33% | 27% |
| Sunrise / sunset | 6:59 am / 7:45 pm | 7:15 am / 7:09 pm |
| Daylight | 12.8 h | 11.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical September day
- 6 am72°Fdew point 69°F
- 9 am80°Fdew point 70°F
- Noon86°Fdew point 68°F
- 3 pm87°Fdew point 67°F
- 6 pm83°Fdew point 69°F
- 9 pm77°Fdew point 70°F
NOAA hourly normals (local standard time) from Houston Intercont Airport (30 mi away); average wind 6 mph; clear or few clouds in 24% of daytime hours, mostly cloudy or overcast in 44%.
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)1 of 30
- Hot dayshigh 90°F or more18 of 30
- Muggy daysdaily mean dew point 65°F or more25 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 5.7 in; a dry September brings about 2.4 in and a wet one about 8.9 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202011: average high 95°F
- Coolest September2003: average high 86°F
- Wettest September2020: 15.6 in
- Driest September1993: 0.8 in
- Highest reading102°F (September 13, 2011)
- Lowest reading52°F (September 27, 2001)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 94°F | 90°F | 83°F |
| Normal low | 76°F | 72°F | 62°F |
| Wet days | 10 | 9 | 7 |
| Comfortable days | 0 | 1 | 9 |
| Daylight | 13.2 h | 12.3 h | 11.4 h |
Highs change by -4°F from August and -7°F into October.
Nearby alternatives in September
- Drier: Georgetown, TX141 mi · high 90°F · 6 wet days
How Sugar Land ranks in September
- Normal high56th warmest of 378 cities; 17th of 38 in Texas
- Wet days279th driest of 378
What to pack for Sugar Land in September
- Light, breathable clothing – highs near 90°F and about 25 muggy days
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
September has 0 heating degree days and 468 cooling degree days (base 65°F), 10% of the year's total heating and cooling demand.
Questions
How hot is Sugar Land in September?
The normal high is 90°F and the normal low is 72°F. From 1991 to 2020 the hottest September reading was 102°F (September 13, 2011).
Does it rain a lot in Sugar Land in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 5.7 in. The wettest September in 1991-2020 was in 2020 (15.6 in); the driest was in 1993 (0.8 in).
Is September a good time to visit Sugar Land?
September ranks 9th of 12 months on our comfort score for Sugar Land (38 out of 100). It has about 1 comfortable day (judged by temperature only) and about 18 days at 90°F or hotter. The best month is March.
Where the numbers come from
- Temperature and frost dates: Houston Sugarland Mem (USW00012977), 1.3 mi W of the city center, 82 ft . NOAA normals and daily records, 1991-2020.
- Rain: Houston-Westbury (USC00414325), 2.8 mi N of the city center, 50 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Sugar Land (USC00418728), 1.3 mi W of the city center, 84 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Houston Intercont Airport (USW00012960), 30 mi NNE of the city center, 95 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Ellington Field Airport (722436-12906), 28 mi E of the city center, 32 ft . Hourly observations, 1991-2020.