Charleston weather in June: Charleston, South Carolina: normal highs, lows, rain and records for June
Charleston in June has a normal high of 89°F and a normal low of 70°F, a daily mean of 79°F, rising from 86°F on the 1st to 91°F by the 30th. Measurable precipitation falls on 12 days in a normal June, 6.21 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 21°C, 158 mm of precipitation in June.
- NOAA stationCharleston International Airport
- Station IDUSW00013880
- Location32.90°N 80.04°W
- Elevation40 ft (12 m)
- From the center6 miles
- Population157,665
- Jan 60° 39°
- Feb 64° 42°
- Mar 70° 47°
- Apr 77° 55°
- May 84° 63°
- Jun 89° 70°
- Jul 91° 74°
- Aug 90° 73°
- Sep 85° 68°
- Oct 78° 58°
- Nov 69° 47°
- Dec 63° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Charleston in June?
The normal high is 89°F and the normal low 70°F, for a daily mean of 79.4°F. June is 6.1°F warmer than May and 3.1°F cooler than July. June is the 3rd warmest month of the year in Charleston and the 3rd wettest. Across the month the normal high rises 5°F, from 86°F on June 1 to 91°F on June 30. From one year to the next June's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Junes in three average between 77°F and 82°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| June 1 | 86°F | 67°F | 34% | 23% |
| June 8 | 87°F | 69°F | 37% | 25% |
| June 15 | 89°F | 71°F | 38% | 27% |
| June 22 | 90°F | 72°F | 40% | 28% |
| June 30 | 91°F | 73°F | 42% | 29% |
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 | 86°F | 67°F | 34% | 23% | 14 h 10 min |
| June 2 | 86°F | 68°F | 34% | 23% | 14 h 10 min |
| June 3 | 87°F | 68°F | 35% | 24% | 14 h 10 min |
| June 4 | 87°F | 68°F | 35% | 24% | 14 h 10 min |
| June 5 | 87°F | 68°F | 35% | 24% | 14 h 10 min |
| June 6 | 87°F | 69°F | 36% | 25% | 14 h 10 min |
| June 7 | 87°F | 69°F | 36% | 25% | 14 h 10 min |
| June 8 | 87°F | 69°F | 37% | 25% | 14 h 20 min |
| June 9 | 88°F | 69°F | 37% | 25% | 14 h 20 min |
| June 10 | 88°F | 70°F | 37% | 26% | 14 h 20 min |
| June 11 | 88°F | 70°F | 37% | 26% | 14 h 20 min |
| June 12 | 88°F | 70°F | 38% | 26% | 14 h 20 min |
| June 13 | 88°F | 70°F | 38% | 26% | 14 h 20 min |
| June 14 | 88°F | 70°F | 38% | 26% | 14 h 20 min |
| June 15 | 89°F | 71°F | 38% | 27% | 14 h 20 min |
| June 16 | 89°F | 71°F | 39% | 27% | 14 h 20 min |
| June 17 | 89°F | 71°F | 39% | 27% | 14 h 20 min |
| June 18 | 89°F | 71°F | 39% | 27% | 14 h 20 min |
| June 19 | 89°F | 71°F | 40% | 27% | 14 h 20 min |
| June 20 | 89°F | 71°F | 40% | 28% | 14 h 20 min |
| June 21 | 89°F | 72°F | 40% | 28% | 14 h 20 min |
| June 22 | 90°F | 72°F | 40% | 28% | 14 h 20 min |
| June 23 | 90°F | 72°F | 40% | 28% | 14 h 20 min |
| June 24 | 90°F | 72°F | 41% | 28% | 14 h 20 min |
| June 25 | 90°F | 72°F | 41% | 28% | 14 h 20 min |
| June 26 | 90°F | 72°F | 41% | 29% | 14 h 20 min |
| June 27 | 90°F | 72°F | 41% | 29% | 14 h 20 min |
| June 28 | 90°F | 73°F | 42% | 29% | 14 h 20 min |
| June 29 | 90°F | 73°F | 42% | 29% | 14 h 20 min |
| June 30 | 91°F | 73°F | 42% | 29% | 14 h 20 min |
- Normal high
- 89°FJune average
- Normal low
- 70°FJune average
- Precipitation
- 6.21 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 14
- 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
- 29
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013880; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Charleston in June?
On a given June day the chance of 0.01 inch or more is 38% on average, highest around June 30 (42%). In all, 6.21 in falls on 12 days of a normal June, 2 of them with an inch or more.
In a normal June in Charleston, 14 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013880.
How humid and windy is Charleston in June?
At 3 p.m. the normal temperature is 87°F with 60% relative humidity and a dew point of 71°F; at 6 a.m. it is 74°F with 91% humidity. The wind averages 7.3 mph, most often from the south in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 74°F | 72°F | 91% | 4.6 mph | 50% |
| 9 a.m. | 82°F | 72°F | 72% | 7.4 mph | 46% |
| noon | 87°F | 71°F | 60% | 8.8 mph | 32% |
| 3 p.m. | 87°F | 71°F | 60% | 10.5 mph | 29% |
| 6 p.m. | 83°F | 72°F | 68% | 10.0 mph | – |
| 9 p.m. | 78°F | 72°F | 82% | 6.6 mph | 54% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013880. 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 June in Charleston?
The warmest June temperature on Charleston's official record (since 1937) is 103°F, on June 24, 1944; the coldest is 50°F, on June 12, 1972. The wettest June brought 27.24 in (1973).
The June mean against the 1991-2020 normal of 79.4°F: 2021 78.8°F (−0.6), 2022 80.3°F (+0.8), 2023 78.1°F (−1.3), 2024 81.8°F (+2.4), 2025 82.1°F (+2.7), 2026 80.8°F (+1.4). 4 of 6 ran warmer than normal.
| June | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.8°F | −0.6°F | 7.20 in |
| 2022 | 80.3°F | +0.8°F | 6.27 in |
| 2023 | 78.1°F | −1.3°F | 4.24 in |
| 2024 | 81.8°F | +2.4°F | 4.19 in |
| 2025 | 82.1°F | +2.7°F | 3.17 in |
| 2026 | 80.8°F | +1.4°F | 1.89 in |
Source: records: ACIS, NWS threaded record CHSthr; recent months: ACIS, station USW00013880. Records and recent months use complete months only.
How does June in Charleston 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; Charleston's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.