Jackson, MS weather in September
Expect hot, humid weather with some rain in Jackson in September, with highs near 88°F and lows near 66°F. Rain falls on about 7 days.
- Normal high
- 88°F
- Normal low
- 66°F
- Wet days
- 7
- 3.5 in total
- Muggy days
- 19
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 91°F | 84°F |
| Normal low | 70°F | 61°F |
| Chance of a wet day | 26% | 21% |
| Sunrise / sunset | 6:35 am / 7:25 pm | 6:54 am / 6:47 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 am67°Fdew point 64°F
- 9 am78°Fdew point 66°F
- Noon84°Fdew point 65°F
- 3 pm86°Fdew point 64°F
- 6 pm79°Fdew point 66°F
- 9 pm73°Fdew point 66°F
NOAA hourly normals (local standard time) from Jackson Intl Airport (6 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F2 of 30
- Hot dayshigh 90°F or more13 of 30
- Muggy daysdaily mean dew point 65°F or more19 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 3.5 in; a dry September brings about 1.6 in and a wet one about 4.2 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, 1991-20202019: average high 95°F
- Coolest September2001: average high 84°F
- Wettest September2011: 12.7 in
- Driest September2010: 0.04 in
- Highest reading104°F (September 4, 2000)
- Lowest reading43°F (September 28, 1993)
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 | 88°F | 78°F |
| Normal low | 72°F | 66°F | 54°F |
| Wet days | 11 | 7 | 7 |
| Comfortable days | 0 | 2 | 11 |
| Daylight | 13.3 h | 12.4 h | 11.4 h |
Highs change by -4°F from August and -10°F into October.
How Jackson ranks in September
- Normal high104th warmest of 378 cities; 1st of 2 in Mississippi
- Wet days133rd driest of 378
- Comfortable days270th most of 342
What to pack for Jackson in September
- Light, breathable clothing – highs near 88°F and about 19 muggy days
Heating and cooling
September has 3 heating degree days and 360 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How hot is Jackson in September?
The normal high is 88°F and the normal low is 66°F. From 1991 to 2020 the hottest September reading was 104°F (most recently on September 4, 2000).
Does it rain a lot in Jackson in September?
About 7 days in September have at least 0.01 in of precipitation, and the normal total is 3.5 in. The wettest September in 1991-2020 was in 2011 (12.7 in); the driest was in 2010 (0.04 in).
Is September a good time to visit Jackson?
September ranks 9th of 12 months on our comfort score for Jackson (43 out of 100). It has about 2 comfortable days and about 13 days at 90°F or hotter. The best months are March and April.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Jackson Intl Airport (USW00003940), 6.4 mi ENE of the city center, 296 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Jackson International Airport (722350-03940), 6.4 mi ENE of the city center, 296 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).