Westerville weather in August: Westerville, Ohio: normal highs, lows, rain and records for August
Westerville in August has a normal high of 85°F and a normal low of 63°F, a daily mean of 74°F, falling from 85°F on the 1st to 83°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 3.64 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 17°C, 92 mm of precipitation in August.
- 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 August?
The normal high is 85°F and the normal low 63°F, for a daily mean of 73.8°F. August is 1.6°F cooler than July and 6.2°F warmer than September. August is the 2nd warmest month of the year in Westerville and the 5th wettest. Across the month the normal high falls 2°F, from 85°F on August 1 to 83°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 72°F and 76°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 85°F | 65°F | 34% | 23% |
| August 8 | 85°F | 64°F | 32% | 22% |
| August 15 | 85°F | 63°F | 31% | 21% |
| August 22 | 84°F | 63°F | 30% | 20% |
| August 31 | 83°F | 61°F | 29% | 19% |
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 | 85°F | 65°F | 34% | 23% | 14 h 20 min |
| August 2 | 85°F | 65°F | 33% | 23% | 14 h 20 min |
| August 3 | 85°F | 64°F | 33% | 23% | 14 h 10 min |
| August 4 | 85°F | 64°F | 33% | 23% | 14 h 10 min |
| August 5 | 85°F | 64°F | 33% | 22% | 14 h 10 min |
| August 6 | 85°F | 64°F | 33% | 22% | 14 h 10 min |
| August 7 | 85°F | 64°F | 32% | 22% | 14 h 10 min |
| August 8 | 85°F | 64°F | 32% | 22% | 14 h |
| August 9 | 85°F | 64°F | 32% | 22% | 14 h |
| August 10 | 85°F | 64°F | 32% | 22% | 14 h |
| August 11 | 85°F | 64°F | 32% | 22% | 14 h |
| August 12 | 85°F | 64°F | 31% | 22% | 14 h |
| August 13 | 85°F | 64°F | 31% | 21% | 13 h 50 min |
| August 14 | 85°F | 64°F | 31% | 21% | 13 h 50 min |
| August 15 | 85°F | 63°F | 31% | 21% | 13 h 50 min |
| August 16 | 85°F | 63°F | 31% | 21% | 13 h 50 min |
| August 17 | 85°F | 63°F | 31% | 21% | 13 h 40 min |
| August 18 | 85°F | 63°F | 30% | 21% | 13 h 40 min |
| August 19 | 85°F | 63°F | 30% | 21% | 13 h 40 min |
| August 20 | 85°F | 63°F | 30% | 20% | 13 h 40 min |
| August 21 | 85°F | 63°F | 30% | 20% | 13 h 30 min |
| August 22 | 84°F | 63°F | 30% | 20% | 13 h 30 min |
| August 23 | 84°F | 62°F | 30% | 20% | 13 h 30 min |
| August 24 | 84°F | 62°F | 29% | 20% | 13 h 30 min |
| August 25 | 84°F | 62°F | 29% | 20% | 13 h 20 min |
| August 26 | 84°F | 62°F | 29% | 20% | 13 h 20 min |
| August 27 | 84°F | 62°F | 29% | 20% | 13 h 20 min |
| August 28 | 84°F | 62°F | 29% | 20% | 13 h 20 min |
| August 29 | 84°F | 61°F | 29% | 20% | 13 h 10 min |
| August 30 | 83°F | 61°F | 29% | 19% | 13 h 10 min |
| August 31 | 83°F | 61°F | 29% | 19% | 13 h 10 min |
- Normal high
- 85°FAugust average
- Normal low
- 63°FAugust average
- Precipitation
- 3.64 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 5
- 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
- 25
- Sunshine
- 80%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 August?
On a given August day the chance of 0.01 inch or more is 31% on average, highest around August 1 (34%). In all, 3.64 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Westerville, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00338951.
What are the records for August in Westerville?
The warmest August temperature on this station's record (since 1897) is 101°F, on August 20, 1983; the coldest is 36°F, on August 29, 1982. The wettest August brought 8.34 in (2005).
The August mean against the 1991-2020 normal of 73.8°F: 2021 75.3°F (+1.5), 2022 72.8°F (−1.0), 2023 72.2°F (−1.6), 2024 74.1°F (+0.3), 2025 71.3°F (−2.5), 2026 73.9°F (+0.1). 3 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.3°F | +1.5°F | 6.10 in |
| 2022 | 72.8°F | −1.0°F | 2.82 in |
| 2023 | 72.2°F | −1.6°F | 5.29 in |
| 2024 | 74.1°F | +0.3°F | 2.58 in |
| 2025 | 71.3°F | −2.5°F | 0.37 in |
| 2026 | 73.9°F | +0.1°F | 8.27 in |
Source: records: ACIS, station USC00338951; recent months: ACIS, station USC00338951. Records and recent months use complete months only.
How does August in Westerville 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; Westerville's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.