Sumter weather in January: Sumter, South Carolina: normal highs, lows, rain and records for January
Sumter in January has a normal high of 55°F and a normal low of 33°F, a daily mean of 44°F, holding near 55°F all month. Measurable precipitation falls on 11 days in a normal January, 3.78 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 13°C and low of 0°C, 96 mm of precipitation and 1 cm of snow in January.
- 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 January?
The normal high is 55°F and the normal low 33°F, for a daily mean of 43.9°F. January is 2.3°F cooler than December and 2.8°F cooler than February. January is the 12th warmest month of the year in Sumter and the 7th wettest, and the snowiest. Across the month the normal high rises 1°F, from 55°F on January 1 to 56°F on January 31. From one year to the next January's mean temperature typically moves about 3.5°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 40°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 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 55°F | 33°F | 36% | 21% |
| January 8 | 55°F | 33°F | 35% | 21% |
| January 15 | 55°F | 33°F | 35% | 22% |
| January 22 | 55°F | 33°F | 35% | 22% |
| January 31 | 56°F | 33°F | 34% | 22% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 11)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 55°F | 33°F | 36% | 21% | 10 h |
| January 2 | 55°F | 33°F | 36% | 21% | 10 h |
| January 3 | 55°F | 33°F | 36% | 21% | 10 h |
| January 4 | 55°F | 33°F | 36% | 21% | 10 h |
| January 5 | 55°F | 33°F | 36% | 21% | 10 h |
| January 6 | 55°F | 33°F | 36% | 21% | 10 h |
| January 7 | 55°F | 33°F | 35% | 21% | 10 h |
| January 8 | 55°F | 33°F | 35% | 21% | 10 h |
| January 9 | 55°F | 33°F | 35% | 21% | 10 h |
| January 10 | 55°F | 33°F | 35% | 21% | 10 h |
| January 11 | 55°F | 33°F | 35% | 21% | 10 h |
| January 12 | 55°F | 33°F | 35% | 22% | 10 h |
| January 13 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 14 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 15 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 16 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 17 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 18 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 19 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 20 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 21 | 55°F | 33°F | 35% | 22% | 10 h 10 min |
| January 22 | 55°F | 33°F | 35% | 22% | 10 h 20 min |
| January 23 | 55°F | 33°F | 35% | 22% | 10 h 20 min |
| January 24 | 55°F | 33°F | 35% | 22% | 10 h 20 min |
| January 25 | 55°F | 33°F | 35% | 22% | 10 h 20 min |
| January 26 | 55°F | 33°F | 34% | 22% | 10 h 20 min |
| January 27 | 55°F | 33°F | 34% | 22% | 10 h 20 min |
| January 28 | 56°F | 33°F | 34% | 22% | 10 h 30 min |
| January 29 | 56°F | 33°F | 34% | 22% | 10 h 30 min |
| January 30 | 56°F | 33°F | 34% | 22% | 10 h 30 min |
| January 31 | 56°F | 33°F | 34% | 22% | 10 h 30 min |
- Normal high
- 55°FJanuary average
- Normal low
- 33°FJanuary average
- Precipitation
- 3.78 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 0.3 inmonth total
- Nights at 32°F or colder
- 16
- Daylight
- 10 h to 10 h 30 minJanuary 1 to January 31
- Days at 70°F or more
- 4
- Sunshine
- 76%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 or snow in Sumter in January?
On a given January day the chance of 0.01 inch or more is 35% on average, highest around January 1 (36%). In all, 3.78 in falls on 11 days of a normal January, 1 of them with an inch or more.
In a normal January in Sumter, 16 nights fall to freezing, 1 days stay below freezing all day and snowfall averages 0.3 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00388440.
What are the records for January in Sumter?
The warmest January temperature on this station's record (since 1901) is 83°F, on January 28, 1944; the coldest is 2°F, on January 21, 1985. The wettest January brought 8.25 in (1993); the snowiest, 4.8 inches (1936).
The January mean against the 1991-2020 normal of 43.9°F: 2021 43.4°F (−0.5), 2022 43.2°F (−0.7), 2023 50.7°F (+6.8), 2024 46.9°F (+3.0), 2025 40.2°F (−3.7), 2026 44.2°F (+0.3). 3 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 43.4°F | −0.5°F | 5.37 in |
| 2022 | 43.2°F | −0.7°F | 5.16 in |
| 2023 | 50.7°F | +6.8°F | 6.30 in |
| 2024 | 46.9°F | +3.0°F | 4.17 in |
| 2025 | 40.2°F | −3.7°F | 2.11 in |
| 2026 | 44.2°F | +0.3°F | 1.89 in |
Source: records: ACIS, station USC00388440; recent months: ACIS, station USC00388440. Records and recent months use complete months only.
How does January in Sumter compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, January normal highs run from 45°F in Caesars Head to 62°F in Hampton; Sumter's is 55°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.