Sumter weather in June: Sumter, South Carolina: normal highs, lows, rain and records for June
Sumter in June has a normal high of 87°F and a normal low of 66°F, a daily mean of 77°F, rising from 84°F on the 1st to 90°F by the 30th. Measurable precipitation falls on 12 days in a normal June, 5.05 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 19°C, 128 mm of precipitation in June.
- 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 June?
The normal high is 87°F and the normal low 66°F, for a daily mean of 76.6°F. June is 7.1°F warmer than May and 3.3°F cooler than July. June is the 3rd warmest month of the year in Sumter and the 2nd wettest. Across the month the normal high rises 6°F, from 84°F on June 1 to 90°F on June 30. From one year to the next June's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Junes in three average between 74°F and 79°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 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| June 1 | 84°F | 62°F | 35% | 25% |
| June 8 | 86°F | 64°F | 37% | 26% |
| June 15 | 87°F | 66°F | 37% | 26% |
| June 22 | 89°F | 68°F | 37% | 26% |
| June 30 | 90°F | 69°F | 37% | 26% |
Every day of June: normal high, low and chance of precipitation (warmest afternoon June 30, coldest night June 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| June 1 | 84°F | 62°F | 35% | 25% | 14 h 10 min |
| June 2 | 85°F | 63°F | 35% | 25% | 14 h 20 min |
| June 3 | 85°F | 63°F | 36% | 25% | 14 h 20 min |
| June 4 | 85°F | 63°F | 36% | 25% | 14 h 20 min |
| June 5 | 85°F | 63°F | 36% | 25% | 14 h 20 min |
| June 6 | 86°F | 64°F | 36% | 26% | 14 h 20 min |
| June 7 | 86°F | 64°F | 36% | 26% | 14 h 20 min |
| June 8 | 86°F | 64°F | 37% | 26% | 14 h 20 min |
| June 9 | 86°F | 65°F | 37% | 26% | 14 h 20 min |
| June 10 | 86°F | 65°F | 37% | 26% | 14 h 20 min |
| June 11 | 87°F | 65°F | 37% | 26% | 14 h 20 min |
| June 12 | 87°F | 65°F | 37% | 26% | 14 h 20 min |
| June 13 | 87°F | 66°F | 37% | 26% | 14 h 20 min |
| June 14 | 87°F | 66°F | 37% | 26% | 14 h 20 min |
| June 15 | 87°F | 66°F | 37% | 26% | 14 h 20 min |
| June 16 | 88°F | 66°F | 37% | 26% | 14 h 20 min |
| June 17 | 88°F | 67°F | 37% | 26% | 14 h 20 min |
| June 18 | 88°F | 67°F | 37% | 26% | 14 h 20 min |
| June 19 | 88°F | 67°F | 37% | 26% | 14 h 20 min |
| June 20 | 88°F | 67°F | 37% | 26% | 14 h 20 min |
| June 21 | 89°F | 67°F | 37% | 26% | 14 h 20 min |
| June 22 | 89°F | 68°F | 37% | 26% | 14 h 20 min |
| June 23 | 89°F | 68°F | 37% | 26% | 14 h 20 min |
| June 24 | 89°F | 68°F | 37% | 26% | 14 h 20 min |
| June 25 | 89°F | 68°F | 37% | 26% | 14 h 20 min |
| June 26 | 89°F | 68°F | 37% | 26% | 14 h 20 min |
| June 27 | 89°F | 68°F | 37% | 26% | 14 h 20 min |
| June 28 | 90°F | 69°F | 37% | 26% | 14 h 20 min |
| June 29 | 90°F | 69°F | 37% | 26% | 14 h 20 min |
| June 30 | 90°F | 69°F | 37% | 26% | 14 h 20 min |
- Normal high
- 87°FJune average
- Normal low
- 66°FJune average
- Precipitation
- 5.05 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 13
- Daylight
- 14 h 10 min to 14 h 20 minJune 1 to June 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 28
- Sunshine
- 82%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 June?
On a given June day the chance of 0.01 inch or more is 37% on average, highest around June 15 (37%). In all, 5.05 in falls on 12 days of a normal June, 1 of them with an inch or more.
In a normal June in Sumter, 13 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00388440.
What are the records for June in Sumter?
The warmest June temperature on this station's record (since 1901) is 103°F, on June 30, 1936; the coldest is 43°F, on June 1, 1930. The wettest June brought 14.33 in (1903).
The June mean against the 1991-2020 normal of 76.6°F: 2021 76.1°F (−0.5), 2022 80.5°F (+3.9), 2023 75.8°F (−0.8), 2024 80.1°F (+3.5), 2025 80.8°F (+4.2), 2026 79.5°F (+2.9). 4 of 6 ran warmer than normal.
| June | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.1°F | −0.5°F | 6.33 in |
| 2022 | 80.5°F | +3.9°F | 2.44 in |
| 2023 | 75.8°F | −0.8°F | 7.30 in |
| 2024 | 80.1°F | +3.5°F | 1.53 in |
| 2025 | 80.8°F | +4.2°F | 5.61 in |
| 2026 | 79.5°F | +2.9°F | – |
Source: records: ACIS, station USC00388440; recent months: ACIS, station USC00388440. Records and recent months use complete months only.
How does June in Sumter compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, June normal highs run from 75°F in Caesars Head to 90°F in Pelion; Sumter's is 87°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.