Westerville weather in May: Westerville, Ohio: normal highs, lows, rain and records for May
Westerville in May has a normal high of 76°F and a normal low of 52°F, a daily mean of 64°F, rising from 72°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 14 days in a normal May, 4.22 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 11°C, 107 mm of precipitation in May.
- NOAA stationWesterville
- Station IDUSC00338951
- Location40.13°N 82.94°W
- Elevation802 ft (244 m)
- From the center2 miles
- Population38,612
- Jan 38° 22°
- Feb 42° 24°
- Mar 53° 32°
- Apr 66° 42°
- May 76° 52°
- Jun 83° 61°
- Jul 86° 65°
- Aug 85° 63°
- Sep 79° 56°
- Oct 67° 45°
- Nov 53° 35°
- Dec 42° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Westerville in May?
The normal high is 76°F and the normal low 52°F, for a daily mean of 63.9°F. May is 9.8°F warmer than April and 8.3°F cooler than June. May is the 5th warmest month of the year in Westerville and the 3rd wettest. Across the month the normal high rises 7°F, from 72°F on May 1 to 79°F on May 31. From one year to the next May's mean temperature typically moves about 3.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 60°F and 67°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 46%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 72°F | 48°F | 46% | 30% |
| May 8 | 74°F | 50°F | 46% | 29% |
| May 15 | 75°F | 52°F | 45% | 29% |
| May 22 | 77°F | 54°F | 44% | 29% |
| May 31 | 79°F | 57°F | 42% | 28% |
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 | 72°F | 48°F | 46% | 30% | 13 h 50 min |
| May 2 | 72°F | 48°F | 46% | 30% | 13 h 50 min |
| May 3 | 72°F | 48°F | 46% | 30% | 14 h |
| May 4 | 73°F | 49°F | 46% | 29% | 14 h |
| May 5 | 73°F | 49°F | 46% | 30% | 14 h |
| May 6 | 73°F | 49°F | 46% | 29% | 14 h |
| May 7 | 73°F | 50°F | 46% | 29% | 14 h 10 min |
| May 8 | 74°F | 50°F | 46% | 29% | 14 h 10 min |
| May 9 | 74°F | 50°F | 46% | 29% | 14 h 10 min |
| May 10 | 74°F | 51°F | 45% | 29% | 14 h 10 min |
| May 11 | 74°F | 51°F | 45% | 29% | 14 h 10 min |
| May 12 | 75°F | 51°F | 45% | 29% | 14 h 20 min |
| May 13 | 75°F | 52°F | 45% | 29% | 14 h 20 min |
| May 14 | 75°F | 52°F | 45% | 29% | 14 h 20 min |
| May 15 | 75°F | 52°F | 45% | 29% | 14 h 20 min |
| May 16 | 75°F | 53°F | 45% | 29% | 14 h 20 min |
| May 17 | 76°F | 53°F | 45% | 29% | 14 h 30 min |
| May 18 | 76°F | 53°F | 44% | 29% | 14 h 30 min |
| May 19 | 76°F | 53°F | 44% | 29% | 14 h 30 min |
| May 20 | 76°F | 54°F | 44% | 29% | 14 h 30 min |
| May 21 | 77°F | 54°F | 44% | 29% | 14 h 30 min |
| May 22 | 77°F | 54°F | 44% | 29% | 14 h 30 min |
| May 23 | 77°F | 55°F | 43% | 29% | 14 h 40 min |
| May 24 | 77°F | 55°F | 43% | 29% | 14 h 40 min |
| May 25 | 78°F | 55°F | 43% | 29% | 14 h 40 min |
| May 26 | 78°F | 56°F | 43% | 28% | 14 h 40 min |
| May 27 | 78°F | 56°F | 43% | 28% | 14 h 40 min |
| May 28 | 79°F | 56°F | 43% | 28% | 14 h 40 min |
| May 29 | 79°F | 56°F | 42% | 28% | 14 h 50 min |
| May 30 | 79°F | 57°F | 42% | 28% | 14 h 50 min |
| May 31 | 79°F | 57°F | 42% | 28% | 14 h 50 min |
- Normal high
- 76°FMay average
- Normal low
- 52°FMay average
- Precipitation
- 4.22 inmonth total
- Days with precipitation
- 140.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 50 min to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 22
- Days at 80°F or more
- 12
- Sunshine
- 72%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00338951; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Westerville in May?
On a given May day the chance of 0.01 inch or more is 44% on average, highest around May 1 (46%). In all, 4.22 in falls on 14 days of a normal May, 1 of them with an inch or more.
In a normal May in Westerville, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00338951.
What are the records for May in Westerville?
The warmest May temperature on this station's record (since 1897) is 95°F, on May 18, 1962; the coldest is 23°F, on May 10, 1966. The wettest May brought 8.81 in (1968).
The May mean against the 1991-2020 normal of 63.9°F: 2021 60.5°F (−3.4), 2022 65.5°F (+1.6), 2023 61.2°F (−2.7), 2024 67.2°F (+3.3), 2025 60.7°F (−3.2), 2026 60.8°F (−3.1). 2 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 60.5°F | −3.4°F | 4.25 in |
| 2022 | 65.5°F | +1.6°F | 6.47 in |
| 2023 | 61.2°F | −2.7°F | 2.22 in |
| 2024 | 67.2°F | +3.3°F | 3.95 in |
| 2025 | 60.7°F | −3.2°F | 6.67 in |
| 2026 | 60.8°F | −3.1°F | 7.19 in |
Source: records: ACIS, station USC00338951; recent months: ACIS, station USC00338951. Records and recent months use complete months only.
How does May in Westerville compare across Ohio?
Across the 99 places PlainClimate covers in Ohio, May normal highs run from 69°F in Sandusky to 76°F in Milford; Westerville's is 76°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.