Summerville weather in May: Summerville, South Carolina: normal highs, lows, rain and records for May
Summerville in May has a normal high of 82°F and a normal low of 59°F, a daily mean of 71°F, rising from 80°F on the 1st to 85°F by the 31st. The month brings 3.52 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 15°C, 89 mm of precipitation in May.
- NOAA stationSummerville (4 mi W)
- Station IDUSC00388426
- Location33.04°N 80.23°W
- Elevation65 ft (20 m)
- Population52,625
- Jan 58° 35°
- Feb 62° 37°
- Mar 69° 42°
- Apr 76° 50°
- May 82° 59°
- Jun 87° 67°
- Jul 90° 71°
- Aug 90° 70°
- Sep 85° 65°
- Oct 77° 53°
- Nov 68° 42°
- Dec 61° 37°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Summerville in May?
The normal high is 82°F and the normal low 59°F, for a daily mean of 70.7°F. May is 8.1°F warmer than April and 6.5°F cooler than June. May is the 5th warmest month of the year in Summerville and the 8th wettest. Across the month the normal high rises 5°F, from 80°F on May 1 to 85°F on May 31. From one year to the next May's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Mays in three average between 69°F and 73°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 80°F | 54°F | – | – |
| May 8 | 81°F | 57°F | – | – |
| May 15 | 82°F | 59°F | – | – |
| May 22 | 83°F | 61°F | – | – |
| May 31 | 85°F | 64°F | – | – |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 80°F | 54°F | – | – | 13 h 30 min |
| May 2 | 80°F | 55°F | – | – | 13 h 30 min |
| May 3 | 80°F | 55°F | – | – | 13 h 30 min |
| May 4 | 80°F | 55°F | – | – | 13 h 30 min |
| May 5 | 80°F | 56°F | – | – | 13 h 30 min |
| May 6 | 81°F | 56°F | – | – | 13 h 40 min |
| May 7 | 81°F | 56°F | – | – | 13 h 40 min |
| May 8 | 81°F | 57°F | – | – | 13 h 40 min |
| May 9 | 81°F | 57°F | – | – | 13 h 40 min |
| May 10 | 81°F | 57°F | – | – | 13 h 40 min |
| May 11 | 82°F | 58°F | – | – | 13 h 40 min |
| May 12 | 82°F | 58°F | – | – | 13 h 50 min |
| May 13 | 82°F | 58°F | – | – | 13 h 50 min |
| May 14 | 82°F | 59°F | – | – | 13 h 50 min |
| May 15 | 82°F | 59°F | – | – | 13 h 50 min |
| May 16 | 82°F | 59°F | – | – | 13 h 50 min |
| May 17 | 83°F | 60°F | – | – | 13 h 50 min |
| May 18 | 83°F | 60°F | – | – | 13 h 50 min |
| May 19 | 83°F | 60°F | – | – | 14 h |
| May 20 | 83°F | 60°F | – | – | 14 h |
| May 21 | 83°F | 61°F | – | – | 14 h |
| May 22 | 83°F | 61°F | – | – | 14 h |
| May 23 | 84°F | 61°F | – | – | 14 h |
| May 24 | 84°F | 62°F | – | – | 14 h |
| May 25 | 84°F | 62°F | – | – | 14 h |
| May 26 | 84°F | 62°F | – | – | 14 h |
| May 27 | 84°F | 63°F | – | – | 14 h 10 min |
| May 28 | 84°F | 63°F | – | – | 14 h 10 min |
| May 29 | 85°F | 63°F | – | – | 14 h 10 min |
| May 30 | 85°F | 63°F | – | – | 14 h 10 min |
| May 31 | 85°F | 64°F | – | – | 14 h 10 min |
- Normal high
- 82°FMay average
- Normal low
- 59°FMay average
- Precipitation
- 3.52 inmonth total
- Days at 90°F or more
- 6
- Daylight
- 13 h 30 min to 14 h 10 minMay 1 to May 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 24
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00388426; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Summerville in May?
In a normal May in Summerville, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00388426.
What are the records for May in Summerville?
The warmest May temperature on this station's record (since 1898) is 101°F, on May 26, 1911; the coldest is 33°F, on May 2, 1963. The wettest May brought 9.13 in (1948).
The May mean against the 1991-2020 normal of 70.7°F: 2022 74.5°F (+3.8), 2023 69.4°F (−1.3), 2024 75.5°F (+4.8), 2025 74.4°F (+3.7), 2026 74.1°F (+3.4). 4 of 5 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 74.5°F | +3.8°F | 4.45 in |
| 2023 | 69.4°F | −1.3°F | 3.27 in |
| 2024 | 75.5°F | +4.8°F | 2.76 in |
| 2025 | 74.4°F | +3.7°F | 5.47 in |
| 2026 | 74.1°F | +3.4°F | 4.07 in |
Source: records: ACIS, station USC00388426; recent months: ACIS, station USC00388426. Records and recent months use complete months only.
How does May in Summerville compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, May normal highs run from 70°F in Caesars Head to 86°F in Hampton; Summerville's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.