Sidney weather in September: Sidney, Nebraska: normal highs, lows, rain and records for September
Sidney in September has a normal high of 79°F and a normal low of 46°F, a daily mean of 62°F, falling from 85°F on the 1st to 72°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 1.31 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 8°C, 33 mm of precipitation in September.
- NOAA stationSidney Municipal Airport
- Station IDUSW00024030
- Location41.10°N 102.98°W
- Elevation4,309 ft (1,313 m)
- Population6,483
- Jan 42° 14°
- Feb 44° 15°
- Mar 54° 23°
- Apr 61° 30°
- May 70° 40°
- Jun 82° 51°
- Jul 90° 57°
- Aug 88° 55°
- Sep 79° 46°
- Oct 64° 32°
- Nov 51° 21°
- Dec 42° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sidney in September?
The normal high is 79°F and the normal low 46°F, for a daily mean of 62.3°F. September is 9.3°F cooler than August and 14.2°F warmer than October. September is the 4th warmest month of the year in Sidney and the 6th wettest. Across the month the normal high falls 13°F, from 85°F on September 1 to 72°F on September 30. From one year to the next September's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 65°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 | 51°F | 26% | 12% |
| September 8 | 83°F | 49°F | 25% | 11% |
| September 15 | 80°F | 46°F | 24% | 10% |
| September 22 | 76°F | 43°F | 22% | 9% |
| September 30 | 72°F | 40°F | 21% | 8% |
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 | 51°F | 26% | 12% | 13 h 10 min |
| September 2 | 84°F | 51°F | 25% | 11% | 13 h 10 min |
| September 3 | 84°F | 50°F | 25% | 11% | 13 h |
| September 4 | 84°F | 50°F | 25% | 11% | 13 h |
| September 5 | 83°F | 50°F | 25% | 11% | 13 h |
| September 6 | 83°F | 49°F | 25% | 11% | 13 h |
| September 7 | 83°F | 49°F | 25% | 11% | 12 h 50 min |
| September 8 | 83°F | 49°F | 25% | 11% | 12 h 50 min |
| September 9 | 82°F | 48°F | 25% | 11% | 12 h 50 min |
| September 10 | 82°F | 48°F | 24% | 10% | 12 h 50 min |
| September 11 | 81°F | 48°F | 24% | 10% | 12 h 40 min |
| September 12 | 81°F | 47°F | 24% | 10% | 12 h 40 min |
| September 13 | 81°F | 47°F | 24% | 10% | 12 h 40 min |
| September 14 | 80°F | 46°F | 24% | 10% | 12 h 30 min |
| September 15 | 80°F | 46°F | 24% | 10% | 12 h 30 min |
| September 16 | 79°F | 46°F | 23% | 9% | 12 h 30 min |
| September 17 | 79°F | 45°F | 23% | 9% | 12 h 30 min |
| September 18 | 78°F | 45°F | 23% | 9% | 12 h 20 min |
| September 19 | 78°F | 44°F | 23% | 9% | 12 h 20 min |
| September 20 | 78°F | 44°F | 23% | 9% | 12 h 20 min |
| September 21 | 77°F | 44°F | 22% | 9% | 12 h 20 min |
| September 22 | 76°F | 43°F | 22% | 9% | 12 h 10 min |
| September 23 | 76°F | 43°F | 22% | 8% | 12 h 10 min |
| September 24 | 75°F | 42°F | 22% | 8% | 12 h 10 min |
| September 25 | 75°F | 42°F | 21% | 8% | 12 h 10 min |
| September 26 | 74°F | 41°F | 21% | 8% | 12 h |
| September 27 | 74°F | 41°F | 21% | 8% | 12 h |
| September 28 | 73°F | 41°F | 21% | 8% | 12 h |
| September 29 | 73°F | 40°F | 21% | 8% | 11 h 50 min |
| September 30 | 72°F | 40°F | 21% | 8% | 11 h 50 min |
- Normal high
- 79°FSeptember average
- Normal low
- 46°FSeptember average
- Precipitation
- 1.31 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 6
- Nights at 32°F or colder
- 1
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 24
- Days at 80°F or more
- 16
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024030; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sidney in September?
On a given September day the chance of 0.01 inch or more is 23% on average, highest around September 1 (26%). In all, 1.31 in falls on 7 days of a normal September.
In a normal September in Sidney, 6 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024030.
How humid and windy is Sidney in September?
At 3 p.m. the normal temperature is 70°F with 30% relative humidity and a dew point of 36°F; at 6 a.m. it is 44°F with 74% humidity. The wind averages 11.1 mph, most often from the northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 44°F | 37°F | 74% | 10.2 mph | – |
| 9 a.m. | 59°F | 39°F | 48% | 12.6 mph | – |
| noon | 68°F | 38°F | 33% | 13.4 mph | – |
| 3 p.m. | 70°F | 36°F | 30% | 13.4 mph | – |
| 6 p.m. | 59°F | 38°F | 45% | 9.6 mph | – |
| 9 p.m. | 51°F | 38°F | 60% | 9.9 mph | 81% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024030. 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 Sidney?
The warmest September temperature on this station's record (since 1948) is 102°F, on September 6, 2013; the coldest is 13°F, on September 30, 1985. The wettest September brought 7.05 in (2013); the snowiest, 4.9 inches (1985).
The September mean against the 1991-2020 normal of 62.3°F: 2021 66.6°F (+4.3), 2022 66.9°F (+4.6), 2023 64.8°F (+2.5), 2024 67.5°F (+5.2), 2025 64.0°F (+1.7), 2026 68.8°F (+6.5). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.6°F | +4.3°F | 0.72 in |
| 2022 | 66.9°F | +4.6°F | 0.83 in |
| 2023 | 64.8°F | +2.5°F | 0.26 in |
| 2024 | 67.5°F | +5.2°F | 0.01 in |
| 2025 | 64.0°F | +1.7°F | 2.23 in |
| 2026 | 68.8°F | +6.5°F | 2.11 in |
Source: records: ACIS, station USW00024030; recent months: ACIS, station USW00024030. Records and recent months use complete months only.
How does September in Sidney 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; Sidney's is 79°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.