Huron weather in September: Huron, South Dakota: normal highs, lows, rain and records for September
Huron in September has a normal high of 76°F and a normal low of 50°F, a daily mean of 63°F, falling from 81°F on the 1st to 69°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 2.43 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 10°C, 62 mm of precipitation in September.
- NOAA stationHuron Regional Airport
- Station IDUSW00014936
- Location44.40°N 98.22°W
- Elevation1,280 ft (390 m)
- Population14,515
- Jan 26° 6°
- Feb 31° 10°
- Mar 44° 22°
- Apr 58° 34°
- May 70° 46°
- Jun 80° 57°
- Jul 86° 62°
- Aug 83° 59°
- Sep 76° 50°
- Oct 60° 36°
- Nov 44° 22°
- Dec 30° 11°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Huron in September?
The normal high is 76°F and the normal low 50°F, for a daily mean of 62.6°F. September is 8.7°F cooler than August and 14.7°F warmer than October. September is the 4th warmest month of the year in Huron and the 6th wettest. Across the month the normal high falls 12°F, from 81°F on September 1 to 69°F on September 30. From one year to the next September's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 66°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 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 81°F | 55°F | 23% | 14% |
| September 8 | 79°F | 53°F | 23% | 14% |
| September 15 | 76°F | 50°F | 24% | 14% |
| September 22 | 73°F | 47°F | 24% | 14% |
| September 30 | 69°F | 43°F | 24% | 13% |
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 | 81°F | 55°F | 23% | 14% | 13 h 20 min |
| September 2 | 80°F | 55°F | 23% | 14% | 13 h 10 min |
| September 3 | 80°F | 55°F | 23% | 14% | 13 h 10 min |
| September 4 | 80°F | 54°F | 23% | 14% | 13 h 10 min |
| September 5 | 80°F | 54°F | 23% | 14% | 13 h 10 min |
| September 6 | 79°F | 54°F | 23% | 14% | 13 h |
| September 7 | 79°F | 53°F | 23% | 14% | 13 h |
| September 8 | 79°F | 53°F | 23% | 14% | 13 h |
| September 9 | 78°F | 52°F | 23% | 14% | 12 h 50 min |
| September 10 | 78°F | 52°F | 23% | 14% | 12 h 50 min |
| September 11 | 78°F | 52°F | 23% | 14% | 12 h 50 min |
| September 12 | 77°F | 51°F | 23% | 14% | 12 h 40 min |
| September 13 | 77°F | 51°F | 23% | 14% | 12 h 40 min |
| September 14 | 77°F | 50°F | 23% | 14% | 12 h 40 min |
| September 15 | 76°F | 50°F | 24% | 14% | 12 h 40 min |
| September 16 | 76°F | 50°F | 24% | 14% | 12 h 30 min |
| September 17 | 76°F | 49°F | 24% | 14% | 12 h 30 min |
| September 18 | 75°F | 49°F | 24% | 14% | 12 h 30 min |
| September 19 | 75°F | 48°F | 24% | 14% | 12 h 20 min |
| September 20 | 74°F | 48°F | 24% | 14% | 12 h 20 min |
| September 21 | 74°F | 47°F | 24% | 14% | 12 h 20 min |
| September 22 | 73°F | 47°F | 24% | 14% | 12 h 10 min |
| September 23 | 73°F | 46°F | 24% | 14% | 12 h 10 min |
| September 24 | 72°F | 46°F | 24% | 14% | 12 h 10 min |
| September 25 | 72°F | 45°F | 24% | 14% | 12 h 10 min |
| September 26 | 71°F | 45°F | 24% | 14% | 12 h |
| September 27 | 71°F | 44°F | 24% | 14% | 12 h |
| September 28 | 70°F | 44°F | 24% | 14% | 12 h |
| September 29 | 70°F | 43°F | 24% | 13% | 11 h 50 min |
| September 30 | 69°F | 43°F | 24% | 13% | 11 h 50 min |
- Normal high
- 76°FSeptember average
- Normal low
- 50°FSeptember average
- Precipitation
- 2.43 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 2
- Nights at 32°F or colder
- 1
- Daylight
- 13 h 20 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 22
- Days at 80°F or more
- 12
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014936; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Huron in September?
On a given September day the chance of 0.01 inch or more is 23% on average, highest around September 21 (24%). In all, 2.43 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Huron, 2 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014936.
How humid and windy is Huron in September?
At 3 p.m. the normal temperature is 67°F with 42% relative humidity and a dew point of 43°F; at 6 a.m. it is 46°F with 84% humidity. The wind averages 9.8 mph, most often from the west-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. | 46°F | 42°F | 84% | 8.1 mph | 63% |
| 9 a.m. | 54°F | 44°F | 70% | 10.6 mph | 62% |
| noon | 64°F | 44°F | 50% | 12.8 mph | 64% |
| 3 p.m. | 67°F | 43°F | 42% | 13.0 mph | 60% |
| 6 p.m. | 62°F | 44°F | 52% | 9.1 mph | 63% |
| 9 p.m. | 54°F | 44°F | 68% | 8.5 mph | 66% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014936. 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 Huron?
The warmest September temperature on Huron's official record (since 1881) is 106°F, on September 9, 1904; the coldest is 18°F, on September 27, 1893. The wettest September brought 6.75 in (1901); the snowiest, 1.0 inches (1912).
The September mean against the 1991-2020 normal of 62.6°F: 2021 66.1°F (+3.5), 2022 66.1°F (+3.5), 2023 67.3°F (+4.7), 2024 68.1°F (+5.5), 2025 66.7°F (+4.1), 2026 67.1°F (+4.5). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.1°F | +3.5°F | 3.44 in |
| 2022 | 66.1°F | +3.5°F | 0.16 in |
| 2023 | 67.3°F | +4.7°F | 2.02 in |
| 2024 | 68.1°F | +5.5°F | 0.16 in |
| 2025 | 66.7°F | +4.1°F | 1.30 in |
| 2026 | 67.1°F | +4.5°F | 4.72 in |
Source: records: ACIS, NWS threaded record HONthr; recent months: ACIS, station USW00014936. Records and recent months use complete months only.
How does September in Huron compare across South Dakota?
Across the 100 places PlainClimate covers in South Dakota, September normal highs run from 69°F in Custer to 82°F in Interior; Huron's is 76°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.