Sumter weather in October: Sumter, South Carolina: normal highs, lows, rain and records for October
Sumter in October has a normal high of 74°F and a normal low of 51°F, a daily mean of 63°F, falling from 79°F on the 1st to 70°F by the 31st. Measurable precipitation falls on 8 days in a normal October, 3.88 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 11°C, 99 mm of precipitation in October.
- NOAA stationSumter
- Station IDUSC00388440
- Location33.94°N 80.36°W
- Elevation177 ft (54 m)
- Population42,958
- Jan 55° 33°
- Feb 59° 35°
- Mar 66° 41°
- Apr 75° 50°
- May 81° 58°
- Jun 87° 66°
- Jul 90° 70°
- Aug 89° 68°
- Sep 83° 63°
- Oct 74° 51°
- Nov 65° 40°
- Dec 57° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sumter in October?
The normal high is 74°F and the normal low 51°F, for a daily mean of 62.6°F. October is 10.6°F cooler than September and 10.2°F warmer than November. October is the 6th warmest month of the year in Sumter and the 5th wettest. Across the month the normal high falls 9°F, from 79°F on October 1 to 70°F on October 31. From one year to the next October's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 61°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 79°F | 58°F | 28% | 18% |
| October 8 | 77°F | 55°F | 27% | 18% |
| October 15 | 75°F | 51°F | 26% | 17% |
| October 22 | 73°F | 48°F | 25% | 16% |
| October 31 | 70°F | 44°F | 25% | 15% |
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 | 79°F | 58°F | 28% | 18% | 11 h 50 min |
| October 2 | 79°F | 57°F | 27% | 18% | 11 h 50 min |
| October 3 | 79°F | 57°F | 27% | 18% | 11 h 50 min |
| October 4 | 78°F | 56°F | 27% | 18% | 11 h 50 min |
| October 5 | 78°F | 56°F | 27% | 18% | 11 h 40 min |
| October 6 | 78°F | 55°F | 27% | 18% | 11 h 40 min |
| October 7 | 77°F | 55°F | 27% | 18% | 11 h 40 min |
| October 8 | 77°F | 55°F | 27% | 18% | 11 h 40 min |
| October 9 | 77°F | 54°F | 27% | 18% | 11 h 40 min |
| October 10 | 76°F | 54°F | 27% | 17% | 11 h 30 min |
| October 11 | 76°F | 53°F | 27% | 17% | 11 h 30 min |
| October 12 | 76°F | 53°F | 26% | 17% | 11 h 30 min |
| October 13 | 75°F | 52°F | 26% | 17% | 11 h 30 min |
| October 14 | 75°F | 52°F | 26% | 17% | 11 h 30 min |
| October 15 | 75°F | 51°F | 26% | 17% | 11 h 20 min |
| October 16 | 74°F | 51°F | 26% | 16% | 11 h 20 min |
| October 17 | 74°F | 50°F | 26% | 16% | 11 h 20 min |
| October 18 | 74°F | 50°F | 25% | 16% | 11 h 20 min |
| October 19 | 74°F | 50°F | 25% | 16% | 11 h 20 min |
| October 20 | 73°F | 49°F | 25% | 16% | 11 h 10 min |
| October 21 | 73°F | 49°F | 25% | 16% | 11 h 10 min |
| October 22 | 73°F | 48°F | 25% | 16% | 11 h 10 min |
| October 23 | 72°F | 48°F | 25% | 15% | 11 h 10 min |
| October 24 | 72°F | 47°F | 25% | 15% | 11 h 10 min |
| October 25 | 72°F | 47°F | 25% | 15% | 11 h |
| October 26 | 71°F | 46°F | 25% | 15% | 11 h |
| October 27 | 71°F | 46°F | 25% | 15% | 11 h |
| October 28 | 71°F | 46°F | 25% | 15% | 11 h |
| October 29 | 70°F | 45°F | 25% | 15% | 11 h |
| October 30 | 70°F | 45°F | 25% | 15% | 10 h 50 min |
| October 31 | 70°F | 44°F | 25% | 15% | 10 h 50 min |
- Normal high
- 74°FOctober average
- Normal low
- 51°FOctober average
- Precipitation
- 3.88 inmonth total
- Days with precipitation
- 80.01 inch or more
- Daylight
- 11 h 50 min to 10 h 50 minOctober 1 to October 31
- Days at 70°F or more
- 24
- Days at 80°F or more
- 10
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00388440; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sumter 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, 3.88 in falls on 8 days of a normal October, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00388440.
What are the records for October in Sumter?
The warmest October temperature on this station's record (since 1901) is 100°F, on October 5, 1954; the coldest is 24°F, on October 22, 1974. The wettest October brought 24.64 in (2015).
The October mean against the 1991-2020 normal of 62.6°F: 2021 66.6°F (+4.0), 2022 60.6°F (−2.0), 2023 64.4°F (+1.8), 2024 65.4°F (+2.8), 2025 63.5°F (+0.9). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.6°F | +4.0°F | 1.02 in |
| 2022 | 60.6°F | −2.0°F | 3.45 in |
| 2023 | 64.4°F | +1.8°F | 1.85 in |
| 2024 | 65.4°F | +2.8°F | 0.08 in |
| 2025 | 63.5°F | +0.9°F | 7.42 in |
Source: records: ACIS, station USC00388440; recent months: ACIS, station USC00388440. Records and recent months use complete months only.
How does October in Sumter compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, October normal highs run from 63°F in Caesars Head to 79°F in Hampton; Sumter's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.