Oklahoma City, OK weather in September
Expect warm, often humid weather with some rain in Oklahoma City in September, with highs near 84°F and lows near 62°F. Rain falls on about 7 days.
- Normal high
- 84°F
- Normal low
- 62°F
- Wet days
- 7
- 3.7 in total
- Muggy days
- 11
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 89°F | 79°F |
| Normal low | 66°F | 56°F |
| Chance of a wet day | 23% | 23% |
| Sunrise / sunset | 7:02 am / 7:57 pm | 7:24 am / 7:15 pm |
| Daylight | 12.9 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 am65°Fdew point 59°F
- 9 am72°Fdew point 61°F
- Noon80°Fdew point 61°F
- 3 pm83°Fdew point 60°F
- 6 pm79°Fdew point 60°F
- 9 pm72°Fdew point 60°F
NOAA hourly normals (local standard time) from Oklahoma City Will Rogers Airport (7 mi away); average wind 10 mph; clear or few clouds in 59% of daytime hours, mostly cloudy or overcast in 29%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F5 of 30
- Hot dayshigh 90°F or more9 of 30
- Muggy daysdaily mean dew point 65°F or more11 of 30
- Wet daysat least 0.01 in of rain or melted snow7 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 3.7 in; a dry September brings about 2.0 in and a wet one about 4.8 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20201998: average high 93°F
- Coolest September1991: average high 80°F
- Wettest September1991: 11.8 in
- Driest September2008: 0.6 in
- Highest reading108°F (September 3, 2000)
- Lowest reading38°F (September 23, 1995)
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 | 92°F | 84°F | 73°F |
| Normal low | 69°F | 62°F | 49°F |
| Wet days | 7 | 7 | 8 |
| Comfortable days | 0 | 5 | 15 |
| Daylight | 13.5 h | 12.4 h | 11.3 h |
Highs change by -8°F from August and -11°F into October.
Nearby alternatives in September
- Warmer: Plano, TX175 mi · high 90°F · 6 wet days
How Oklahoma City ranks in September
- Normal high149th warmest of 378 cities; 2nd of 2 in Oklahoma
- Wet days155th driest of 378
- Comfortable days205th most of 342
Heating and cooling
September has 20 heating degree days and 251 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Oklahoma City in September?
The normal high is 84°F and the normal low is 62°F. From 1991 to 2020 the hottest September reading was 108°F (most recently on September 3, 2000).
Does it rain a lot in Oklahoma City in September?
About 7 days in September have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest September in 1991-2020 was in 1991 (11.9 in); the driest was in 2008 (0.6 in).
Is September a good time to visit Oklahoma City?
September ranks 7th of 12 months on our comfort score for Oklahoma City (51 out of 100). It has about 5 comfortable days and about 9 days at 90°F or hotter. The best month is April.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Oklahoma City Will Rogers Airport (USW00013967), 7.2 mi SW of the city center, 1,285 ft (89 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Oklahoma City Tinker AFB (USW00013919), 8.3 mi ESE of the city center, 1,260 ft (64 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Will Rogers World Airport (723530-13967), 7.2 mi SW of the city center, 1,279 ft (83 ft higher than the city). Hourly observations, 1991-2020.