Custer weather in October: Custer, South Dakota: normal highs, lows, rain and records for October
Custer in October has a normal high of 54°F and a normal low of 32°F, a daily mean of 43°F, falling from 61°F on the 1st to 49°F by the 31st. Measurable precipitation falls on 9 days in a normal October, 1.29 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of 0°C, 33 mm of precipitation in October.
- NOAA stationCuster County Airport
- Station IDUSW00094032
- Location43.73°N 103.61°W
- Elevation5,545 ft (1,690 m)
- Population1,829
- Jan 35° 15°
- Feb 35° 15°
- Mar 44° 22°
- Apr 50° 29°
- May 60° 38°
- Jun 71° 47°
- Jul 79° 54°
- Aug 78° 52°
- Sep 69° 43°
- Oct 54° 32°
- Nov 43° 22°
- Dec 35° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Custer in October?
The normal high is 54°F and the normal low 32°F, for a daily mean of 43.0°F. October is 12.9°F cooler than September and 10.4°F warmer than November. October is the 6th warmest month of the year in Custer and the 7th wettest. Across the month the normal high falls 12°F, from 61°F on October 1 to 49°F on October 31. From one year to the next October's mean temperature typically moves about 3.8°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 39°F and 47°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 61°F | 37°F | 28% | 13% |
| October 8 | 57°F | 34°F | 28% | 12% |
| October 15 | 54°F | 32°F | 26% | 10% |
| October 22 | 52°F | 30°F | 25% | 9% |
| October 31 | 49°F | 27°F | 23% | 7% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 61°F | 37°F | 28% | 13% | 11 h 50 min |
| October 2 | 60°F | 37°F | 28% | 13% | 11 h 40 min |
| October 3 | 60°F | 36°F | 28% | 12% | 11 h 40 min |
| October 4 | 59°F | 36°F | 28% | 12% | 11 h 40 min |
| October 5 | 59°F | 36°F | 28% | 12% | 11 h 40 min |
| October 6 | 58°F | 35°F | 28% | 12% | 11 h 30 min |
| October 7 | 58°F | 35°F | 28% | 12% | 11 h 30 min |
| October 8 | 57°F | 34°F | 28% | 12% | 11 h 30 min |
| October 9 | 57°F | 34°F | 27% | 11% | 11 h 20 min |
| October 10 | 56°F | 34°F | 27% | 11% | 11 h 20 min |
| October 11 | 56°F | 33°F | 27% | 11% | 11 h 20 min |
| October 12 | 55°F | 33°F | 27% | 11% | 11 h 10 min |
| October 13 | 55°F | 33°F | 27% | 10% | 11 h 10 min |
| October 14 | 55°F | 32°F | 26% | 10% | 11 h 10 min |
| October 15 | 54°F | 32°F | 26% | 10% | 11 h 10 min |
| October 16 | 54°F | 32°F | 26% | 10% | 11 h |
| October 17 | 53°F | 31°F | 26% | 10% | 11 h |
| October 18 | 53°F | 31°F | 26% | 9% | 11 h |
| October 19 | 53°F | 31°F | 25% | 9% | 10 h 50 min |
| October 20 | 52°F | 30°F | 25% | 9% | 10 h 50 min |
| October 21 | 52°F | 30°F | 25% | 9% | 10 h 50 min |
| October 22 | 52°F | 30°F | 25% | 9% | 10 h 50 min |
| October 23 | 51°F | 29°F | 25% | 8% | 10 h 40 min |
| October 24 | 51°F | 29°F | 24% | 8% | 10 h 40 min |
| October 25 | 51°F | 29°F | 24% | 8% | 10 h 40 min |
| October 26 | 50°F | 29°F | 24% | 8% | 10 h 30 min |
| October 27 | 50°F | 28°F | 24% | 8% | 10 h 30 min |
| October 28 | 50°F | 28°F | 23% | 7% | 10 h 30 min |
| October 29 | 49°F | 28°F | 23% | 7% | 10 h 30 min |
| October 30 | 49°F | 27°F | 23% | 7% | 10 h 20 min |
| October 31 | 49°F | 27°F | 23% | 7% | 10 h 20 min |
- Normal high
- 54°FOctober average
- Normal low
- 32°FOctober average
- Precipitation
- 1.29 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 18
- Daylight
- 11 h 50 min to 10 h 20 minOctober 1 to October 31
- Days at 70°F or more
- 4
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094032; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Custer in October?
On a given October day the chance of 0.01 inch or more is 26% on average, highest around October 1 (28%). In all, 1.29 in falls on 9 days of a normal October.
In a normal October in Custer, 18 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094032.
How humid and windy is Custer in October?
At 3 p.m. the normal temperature is 45°F with 38% relative humidity and a dew point of 21°F; at 6 a.m. it is 31°F with 61% humidity. The wind averages 6.5 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 31°F | 19°F | 61% | 5.3 mph | – |
| 9 a.m. | 39°F | 21°F | 48% | 7.0 mph | – |
| noon | 45°F | 20°F | 37% | 9.2 mph | – |
| 3 p.m. | 45°F | 21°F | 38% | 8.8 mph | – |
| 6 p.m. | 37°F | 20°F | 52% | 4.8 mph | – |
| 9 p.m. | 33°F | 20°F | 58% | 5.3 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094032. 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 October in Custer?
The warmest October temperature on this station's record (since 1999) is 82°F, on October 1, 2005; the coldest is −10°F, on October 26, 2020. The wettest October brought 3.56 in (2013).
The October mean against the 1991-2020 normal of 43.0°F: 2021 46.1°F (+3.1), 2022 45.9°F (+2.9), 2023 43.3°F (+0.3), 2024 50.2°F (+7.2), 2025 45.3°F (+2.3). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 46.1°F | +3.1°F | 2.52 in |
| 2022 | 45.9°F | +2.9°F | 0.24 in |
| 2023 | 43.3°F | +0.3°F | 2.44 in |
| 2024 | 50.2°F | +7.2°F | 0.42 in |
| 2025 | 45.3°F | +2.3°F | 1.30 in |
Source: records: ACIS, station USW00094032; recent months: ACIS, station USW00094032. Records and recent months use complete months only.
How does October in Custer compare across South Dakota?
Across the 100 places PlainClimate covers in South Dakota, October normal highs run from 54°F in Custer to 65°F in Interior; Custer's is 54°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.