Wilmington weather in August: Wilmington, Ohio: normal highs, lows, rain and records for August
Wilmington in August has a normal high of 83°F and a normal low of 61°F, a daily mean of 72°F, falling from 84°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 11 days in a normal August, 3.16 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 80 mm of precipitation in August.
- NOAA stationWilmington Air Park
- Station IDUSW00013841
- Location39.42°N 83.82°W
- Elevation1,056 ft (322 m)
- Population12,639
- Jan 37° 21°
- Feb 41° 24°
- Mar 51° 32°
- Apr 64° 42°
- May 73° 52°
- Jun 82° 60°
- Jul 84° 63°
- Aug 83° 61°
- Sep 77° 54°
- Oct 65° 44°
- Nov 52° 34°
- Dec 41° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Wilmington in August?
The normal high is 83°F and the normal low 61°F, for a daily mean of 72.0°F. August is 1.6°F cooler than July and 6.4°F warmer than September. August is the 2nd warmest month of the year in Wilmington and the 8th wettest. Across the month the normal high falls 3°F, from 84°F on August 1 to 81°F on August 31. From one year to the next August's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 70°F and 74°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 84°F | 63°F | 35% | 20% |
| August 8 | 84°F | 62°F | 34% | 19% |
| August 15 | 83°F | 62°F | 34% | 18% |
| August 22 | 83°F | 60°F | 34% | 18% |
| August 31 | 81°F | 58°F | 34% | 17% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 84°F | 63°F | 35% | 20% | 14 h 20 min |
| August 2 | 84°F | 63°F | 35% | 20% | 14 h 10 min |
| August 3 | 84°F | 63°F | 35% | 20% | 14 h 10 min |
| August 4 | 84°F | 63°F | 35% | 20% | 14 h 10 min |
| August 5 | 84°F | 63°F | 35% | 19% | 14 h 10 min |
| August 6 | 84°F | 63°F | 35% | 19% | 14 h 10 min |
| August 7 | 84°F | 62°F | 35% | 19% | 14 h |
| August 8 | 84°F | 62°F | 34% | 19% | 14 h |
| August 9 | 83°F | 62°F | 34% | 19% | 14 h |
| August 10 | 83°F | 62°F | 34% | 19% | 14 h |
| August 11 | 83°F | 62°F | 34% | 19% | 13 h 50 min |
| August 12 | 83°F | 62°F | 34% | 19% | 13 h 50 min |
| August 13 | 83°F | 62°F | 34% | 19% | 13 h 50 min |
| August 14 | 83°F | 62°F | 34% | 19% | 13 h 50 min |
| August 15 | 83°F | 62°F | 34% | 18% | 13 h 50 min |
| August 16 | 83°F | 61°F | 34% | 18% | 13 h 40 min |
| August 17 | 83°F | 61°F | 34% | 18% | 13 h 40 min |
| August 18 | 83°F | 61°F | 34% | 18% | 13 h 40 min |
| August 19 | 83°F | 61°F | 34% | 18% | 13 h 40 min |
| August 20 | 83°F | 61°F | 34% | 18% | 13 h 30 min |
| August 21 | 83°F | 61°F | 34% | 18% | 13 h 30 min |
| August 22 | 83°F | 60°F | 34% | 18% | 13 h 30 min |
| August 23 | 83°F | 60°F | 34% | 18% | 13 h 30 min |
| August 24 | 82°F | 60°F | 34% | 18% | 13 h 30 min |
| August 25 | 82°F | 60°F | 34% | 17% | 13 h 20 min |
| August 26 | 82°F | 60°F | 34% | 17% | 13 h 20 min |
| August 27 | 82°F | 59°F | 34% | 17% | 13 h 20 min |
| August 28 | 82°F | 59°F | 34% | 17% | 13 h 20 min |
| August 29 | 82°F | 59°F | 34% | 17% | 13 h 10 min |
| August 30 | 82°F | 59°F | 34% | 17% | 13 h 10 min |
| August 31 | 81°F | 58°F | 34% | 17% | 13 h 10 min |
- Normal high
- 83°FAugust average
- Normal low
- 61°FAugust average
- Precipitation
- 3.16 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 14 h 20 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 23
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013841; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Wilmington in August?
On a given August day the chance of 0.01 inch or more is 34% on average, highest around August 1 (35%). In all, 3.16 in falls on 11 days of a normal August, 1 of them with an inch or more.
In a normal August in Wilmington, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013841.
What are the records for August in Wilmington?
The warmest August temperature on Wilmington's official record (since 1917) is 105°F, on August 4, 1930; the coldest is 37°F, on August 30, 1946. The wettest August brought 10.59 in (1926).
The August mean against the 1991-2020 normal of 72.0°F: 2021 74.7°F (+2.7), 2022 72.8°F (+0.8), 2023 73.2°F (+1.2), 2024 73.8°F (+1.8), 2025 70.6°F (−1.4), 2026 73.2°F (+1.2). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.7°F | +2.7°F | 5.36 in |
| 2022 | 72.8°F | +0.8°F | 2.52 in |
| 2023 | 73.2°F | +1.2°F | 3.89 in |
| 2024 | 73.8°F | +1.8°F | 2.19 in |
| 2025 | 70.6°F | −1.4°F | 0.39 in |
| 2026 | 73.2°F | +1.2°F | 6.20 in |
Source: records: ACIS, NWS threaded record ILNthr; recent months: ACIS, station USW00013841. Records and recent months use complete months only.
How does August in Wilmington compare across Ohio?
Across the 99 places PlainClimate covers in Ohio, August normal highs run from 79°F in Ashtabula to 87°F in Lucasville; Wilmington's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.