The Woodlands, TX weather in September
Expect hot, oppressively humid weather with some rain in The Woodlands in September, with highs near 90°F and lows near 71°F. Rain falls on about 8 days.
- Normal high
- 90°F
- Normal low
- 71°F
- Wet days
- 8
- 4.7 in total
- Muggy days
- 24
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 93°F | 88°F |
| Normal low | 74°F | 67°F |
| Chance of a wet day | 30% | 25% |
| Sunrise / sunset | 6:58 am / 7:45 pm | 7:14 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 (15 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 and dew point under 60°F1 of 30
- Hot dayshigh 90°F or more18 of 30
- Muggy daysdaily mean dew point 65°F or more24 of 30
- Wet daysat least 0.01 in of rain or melted snow8 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 4.7 in; a dry September brings about 1.8 in and a wet one about 6.9 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202011: average high 96°F
- Coolest September2003: average high 86°F
- Wettest September2019: 14.9 in
- Driest September2004: 1.0 in
- Highest reading109°F (September 4, 2000)
- Lowest reading49°F (September 27, 2000)
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 | 95°F | 90°F | 83°F |
| Normal low | 75°F | 71°F | 61°F |
| Wet days | 9 | 8 | 8 |
| Comfortable days | 0 | 1 | 7 |
| Daylight | 13.2 h | 12.3 h | 11.4 h |
Highs change by -5°F from August and -7°F into October.
Nearby alternatives in September
- Drier: Grand Prairie, TX200 mi · high 89°F · 5 wet days
How The Woodlands ranks in September
- Normal high44th warmest of 378 cities; 11th of 38 in Texas
- Wet days215th driest of 378
- Comfortable days295th most of 342
What to pack for The Woodlands in September
- Light, breathable clothing – highs near 90°F and about 24 muggy days
- A rain jacket or umbrella – rain on about 8 days
Heating and cooling
September has 0 heating degree days and 465 cooling degree days (base 65°F), 10% of the year's total heating and cooling demand.
Questions
How hot is The Woodlands in September?
The normal high is 90°F and the normal low is 71°F. From 1991 to 2020 the hottest September reading was 109°F (September 4, 2000).
Does it rain a lot in The Woodlands in September?
About 8 days in September have at least 0.01 in of precipitation, and the normal total is 4.7 in. The wettest September in 1991-2020 was in 2019 (15.0 in); the driest was in 2004 (1.0 in).
Is September a good time to visit The Woodlands?
September ranks 10th of 12 months on our comfort score for The Woodlands (37 out of 100). It has about 1 comfortable day and about 18 days at 90°F or hotter. The best months are February, March and November.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, humidity and wind by hour and cloud cover: Houston Intercont Airport (USW00012960), 15 mi SSE of the city center, 95 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Houston Hooks Mem Airport (USW00053910), 7.4 mi SSW of the city center, 152 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: G Bush Intercontinental Airport/Houston Airport (722430-12960), 14 mi SSE of the city center, 90 ft (52 ft lower than the city). Hourly observations, 1991-2020.