Omaha, NE weather in September
September in Omaha: mild, with some rain. Highs 79°F, lows 56°F, about 8 days with rain. A good month for most outdoor plans.
- Normal high
- 79°F
- Normal low
- 56°F
- Wet days
- 8
- 3.0 in total
- Muggy days
- 4
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 83°F | 74°F |
| Normal low | 62°F | 50°F |
| Chance of a wet day | 27% | 26% |
| Sunrise / sunset | 6:50 am / 7:57 pm | 7:19 am / 7:07 pm |
| Daylight | 13.1 h | 11.8 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 am58°Fdew point 54°F
- 9 am65°Fdew point 56°F
- Noon73°Fdew point 56°F
- 3 pm76°Fdew point 55°F
- 6 pm73°Fdew point 55°F
- 9 pm65°Fdew point 56°F
NOAA hourly normals (local standard time) from Omaha Eppley Airfield (4 mi away); average wind 9 mph; clear or few clouds in 54% 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°F12 of 30
- Hot dayshigh 90°F or more4 of 30
- Muggy daysdaily mean dew point 65°F or more4 of 30
- Wet daysat least 0.01 in of rain or melted snow8 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 3.0 in; a dry September brings about 1.6 in and a wet one about 4.1 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 84°F
- Coolest September1993: average high 71°F
- Wettest September2015: 9.3 in
- Driest September2000: 0.6 in
- Highest reading102°F (September 2, 2000)
- Lowest reading29°F (September 19, 1991)
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 | 86°F | 79°F | 66°F |
| Normal low | 66°F | 56°F | 43°F |
| Wet days | 9 | 8 | 7 |
| Comfortable days | 3 | 12 | 13 |
| Daylight | 13.8 h | 12.5 h | 11.1 h |
Highs change by -7°F from August and -13°F into October.
How Omaha ranks in September
- Normal high209th warmest of 378 cities; 2nd of 2 in Nebraska
- Wet days187th driest of 378
- Comfortable days133rd most of 342
Heating and cooling
September has 71 heating degree days and 148 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Omaha in September?
The normal high is 79°F and the normal low is 56°F. From 1991 to 2020 the hottest September reading was 102°F (September 2, 2000).
Does it rain a lot in Omaha in September?
About 8 days in September have at least 0.01 in of precipitation, and the normal total is 3.0 in. The wettest September in 1991-2020 was in 2015 (9.3 in); the driest was in 2000 (0.6 in).
Is September a good time to visit Omaha?
September ranks 3rd of 12 months on our comfort score for Omaha (63 out of 100). It has about 12 comfortable days and about 4 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Omaha Eppley Airfield (USW00014942), 4.1 mi NNE of the city center, 982 ft (74 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Eppley Airfield Airport (725500-14942), 4.1 mi NNE of the city center, 980 ft (76 ft lower than the city). Hourly observations, 1991-2020.