Shelbyville weather in August: Shelbyville, Tennessee: normal highs, lows, rain and records for August
Shelbyville in August has a normal high of 89°F and a normal low of 67°F, a daily mean of 78°F, falling from 90°F on the 1st to 88°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 4.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 19°C, 108 mm of precipitation in August.
- NOAA stationShelbyville Water Dept
- Station IDUSC00408246
- Location35.49°N 86.48°W
- Elevation760 ft (232 m)
- Population25,792
- Jan 49° 29°
- Feb 54° 32°
- Mar 63° 39°
- Apr 72° 47°
- May 80° 56°
- Jun 86° 64°
- Jul 89° 68°
- Aug 89° 67°
- Sep 84° 60°
- Oct 73° 48°
- Nov 62° 37°
- Dec 52° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Shelbyville in August?
The normal high is 89°F and the normal low 67°F, for a daily mean of 77.8°F. August is 1.0°F cooler than July and 6.0°F warmer than September. August is the 2nd warmest month of the year in Shelbyville and the 10th wettest. Across the month the normal high falls 2°F, from 90°F on August 1 to 88°F on August 31. From one year to the next August's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 75°F and 80°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 90°F | 68°F | 33% | 24% |
| August 8 | 90°F | 68°F | 32% | 23% |
| August 15 | 89°F | 67°F | 31% | 21% |
| August 22 | 89°F | 66°F | 29% | 20% |
| August 31 | 88°F | 64°F | 27% | 18% |
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 | 90°F | 68°F | 33% | 24% | 14 h |
| August 2 | 90°F | 68°F | 33% | 23% | 14 h |
| August 3 | 90°F | 68°F | 33% | 23% | 13 h 50 min |
| August 4 | 90°F | 68°F | 33% | 23% | 13 h 50 min |
| August 5 | 90°F | 68°F | 33% | 23% | 13 h 50 min |
| August 6 | 90°F | 68°F | 32% | 23% | 13 h 50 min |
| August 7 | 90°F | 68°F | 32% | 23% | 13 h 50 min |
| August 8 | 90°F | 68°F | 32% | 23% | 13 h 50 min |
| August 9 | 90°F | 68°F | 32% | 22% | 13 h 40 min |
| August 10 | 90°F | 68°F | 32% | 22% | 13 h 40 min |
| August 11 | 89°F | 67°F | 31% | 22% | 13 h 40 min |
| August 12 | 89°F | 67°F | 31% | 22% | 13 h 40 min |
| August 13 | 89°F | 67°F | 31% | 22% | 13 h 40 min |
| August 14 | 89°F | 67°F | 31% | 21% | 13 h 30 min |
| August 15 | 89°F | 67°F | 31% | 21% | 13 h 30 min |
| August 16 | 89°F | 67°F | 30% | 21% | 13 h 30 min |
| August 17 | 89°F | 67°F | 30% | 21% | 13 h 30 min |
| August 18 | 89°F | 67°F | 30% | 21% | 13 h 30 min |
| August 19 | 89°F | 66°F | 30% | 20% | 13 h 20 min |
| August 20 | 89°F | 66°F | 29% | 20% | 13 h 20 min |
| August 21 | 89°F | 66°F | 29% | 20% | 13 h 20 min |
| August 22 | 89°F | 66°F | 29% | 20% | 13 h 20 min |
| August 23 | 89°F | 66°F | 28% | 19% | 13 h 20 min |
| August 24 | 89°F | 66°F | 28% | 19% | 13 h 10 min |
| August 25 | 89°F | 66°F | 28% | 19% | 13 h 10 min |
| August 26 | 88°F | 65°F | 28% | 19% | 13 h 10 min |
| August 27 | 88°F | 65°F | 28% | 19% | 13 h 10 min |
| August 28 | 88°F | 65°F | 28% | 18% | 13 h 10 min |
| August 29 | 88°F | 65°F | 28% | 18% | 13 h |
| August 30 | 88°F | 65°F | 28% | 18% | 13 h |
| August 31 | 88°F | 64°F | 27% | 18% | 13 h |
- Normal high
- 89°FAugust average
- Normal low
- 67°FAugust average
- Precipitation
- 4.24 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 15
- Daylight
- 14 h to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00408246; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Shelbyville in August?
On a given August day the chance of 0.01 inch or more is 30% on average, highest around August 1 (33%). In all, 4.24 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Shelbyville, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00408246.
What are the records for August in Shelbyville?
The warmest August temperature on this station's record (since 1951) is 105°F, on August 17, 1954; the coldest is 47°F, on August 22, 1956. The wettest August brought 12.73 in (2021).
The August mean against the 1991-2020 normal of 77.8°F: 2021 78.3°F (+0.5), 2022 78.0°F (+0.2), 2023 78.2°F (+0.4), 2024 79.1°F (+1.3), 2025 77.1°F (−0.7), 2026 80.5°F (+2.8). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.3°F | +0.5°F | 12.73 in |
| 2022 | 78.0°F | +0.2°F | 6.25 in |
| 2023 | 78.2°F | +0.4°F | 7.77 in |
| 2024 | 79.1°F | +1.3°F | 1.91 in |
| 2025 | 77.1°F | −0.7°F | 1.61 in |
| 2026 | 80.5°F | +2.8°F | 1.13 in |
Source: records: ACIS, station USC00408246; recent months: ACIS, station USC00408246. Records and recent months use complete months only.
How does August in Shelbyville compare across Tennessee?
Across the 116 places PlainClimate covers in Tennessee, August normal highs run from 78°F in Roan Mountain to 92°F in Memphis; Shelbyville's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.