Lincoln weather in September: Lincoln, Nebraska: normal highs, lows, rain and records for September
Lincoln in September has a normal high of 80°F and a normal low of 54°F, a daily mean of 67°F, falling from 85°F on the 1st to 75°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 2.90 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 12°C, 74 mm of precipitation in September.
- NOAA stationLincoln Airport
- Station IDUSW00014939
- Location40.85°N 96.75°W
- Elevation1,190 ft (363 m)
- From the center5 miles
- Population300,619
- Jan 36° 14°
- Feb 41° 18°
- Mar 54° 29°
- Apr 65° 39°
- May 75° 51°
- Jun 85° 62°
- Jul 89° 67°
- Aug 87° 64°
- Sep 80° 54°
- Oct 67° 41°
- Nov 52° 28°
- Dec 39° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lincoln in September?
The normal high is 80°F and the normal low 54°F, for a daily mean of 67.2°F. September is 8.4°F cooler than August and 13.4°F warmer than October. September is the 4th warmest month of the year in Lincoln and the 5th wettest. Across the month the normal high falls 10°F, from 85°F on September 1 to 75°F on September 30. From one year to the next September's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 64°F and 70°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 85°F | 60°F | 26% | 17% |
| September 8 | 83°F | 58°F | 25% | 16% |
| September 15 | 81°F | 55°F | 25% | 16% |
| September 22 | 78°F | 52°F | 25% | 16% |
| September 30 | 75°F | 48°F | 24% | 16% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 85°F | 60°F | 26% | 17% | 13 h 10 min |
| September 2 | 84°F | 60°F | 26% | 17% | 13 h 10 min |
| September 3 | 84°F | 59°F | 26% | 17% | 13 h |
| September 4 | 84°F | 59°F | 26% | 17% | 13 h |
| September 5 | 84°F | 59°F | 26% | 17% | 13 h |
| September 6 | 83°F | 58°F | 25% | 17% | 13 h |
| September 7 | 83°F | 58°F | 25% | 17% | 12 h 50 min |
| September 8 | 83°F | 58°F | 25% | 16% | 12 h 50 min |
| September 9 | 83°F | 57°F | 25% | 16% | 12 h 50 min |
| September 10 | 82°F | 57°F | 25% | 16% | 12 h 50 min |
| September 11 | 82°F | 56°F | 25% | 16% | 12 h 40 min |
| September 12 | 82°F | 56°F | 25% | 16% | 12 h 40 min |
| September 13 | 81°F | 56°F | 25% | 16% | 12 h 40 min |
| September 14 | 81°F | 55°F | 25% | 16% | 12 h 30 min |
| September 15 | 81°F | 55°F | 25% | 16% | 12 h 30 min |
| September 16 | 80°F | 54°F | 25% | 16% | 12 h 30 min |
| September 17 | 80°F | 54°F | 25% | 16% | 12 h 30 min |
| September 18 | 80°F | 53°F | 25% | 16% | 12 h 20 min |
| September 19 | 79°F | 53°F | 25% | 16% | 12 h 20 min |
| September 20 | 79°F | 53°F | 25% | 16% | 12 h 20 min |
| September 21 | 78°F | 52°F | 25% | 16% | 12 h 20 min |
| September 22 | 78°F | 52°F | 25% | 16% | 12 h 10 min |
| September 23 | 78°F | 51°F | 24% | 16% | 12 h 10 min |
| September 24 | 77°F | 51°F | 24% | 16% | 12 h 10 min |
| September 25 | 77°F | 50°F | 24% | 16% | 12 h 10 min |
| September 26 | 76°F | 50°F | 24% | 16% | 12 h |
| September 27 | 76°F | 49°F | 24% | 16% | 12 h |
| September 28 | 75°F | 49°F | 24% | 16% | 12 h |
| September 29 | 75°F | 49°F | 24% | 16% | 11 h 50 min |
| September 30 | 75°F | 48°F | 24% | 16% | 11 h 50 min |
- Normal high
- 80°FSeptember average
- Normal low
- 54°FSeptember average
- Precipitation
- 2.90 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 16
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014939; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lincoln in September?
On a given September day the chance of 0.01 inch or more is 25% on average, highest around September 1 (26%). In all, 2.90 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Lincoln, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014939.
How humid and windy is Lincoln in September?
At 3 p.m. the normal temperature is 72°F with 41% relative humidity and a dew point of 47°F; at 6 a.m. it is 51°F with 83% humidity. The wind averages 9.3 mph, most often from the south-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 51°F | 46°F | 83% | 6.7 mph | 68% |
| 9 a.m. | 59°F | 49°F | 67% | 10.4 mph | 74% |
| noon | 69°F | 48°F | 47% | 13.0 mph | 63% |
| 3 p.m. | 72°F | 47°F | 41% | 13.4 mph | 73% |
| 6 p.m. | 67°F | 47°F | 49% | 9.6 mph | 72% |
| 9 p.m. | 59°F | 48°F | 67% | 7.5 mph | 81% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014939. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Lincoln?
The warmest September temperature on Lincoln's official record (since 1887) is 106°F, on September 1, 1922; the coldest is 26°F, on September 29, 1984. The wettest September brought 11.49 in (2026).
The September mean against the 1991-2020 normal of 67.2°F: 2021 69.9°F (+2.7), 2022 70.8°F (+3.6), 2023 71.3°F (+4.0), 2024 71.2°F (+4.0), 2025 68.3°F (+1.1), 2026 73.5°F (+6.3). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 69.9°F | +2.7°F | 0.64 in |
| 2022 | 70.8°F | +3.6°F | 0.97 in |
| 2023 | 71.3°F | +4.0°F | 0.60 in |
| 2024 | 71.2°F | +4.0°F | 0.20 in |
| 2025 | 68.3°F | +1.1°F | 3.53 in |
| 2026 | 73.5°F | +6.3°F | 11.49 in |
Source: records: ACIS, NWS threaded record LNKthr; recent months: ACIS, station USW00014939. Records and recent months use complete months only.
How does September in Lincoln compare across Nebraska?
Across the 137 places PlainClimate covers in Nebraska, September normal highs run from 74°F in Harrison to 83°F in Beaver City; Lincoln's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.