Huntsville weather in August: Huntsville, Alabama: normal highs, lows, rain and records for August
Huntsville in August has a normal high of 91°F and a normal low of 70°F, a daily mean of 81°F, falling from 92°F on the 1st to 90°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 3.55 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 21°C, 90 mm of precipitation in August.
- NOAA stationHuntsville Intnl Airport
- Station IDUSW00003856
- Location34.64°N 86.79°W
- Elevation624 ft (190 m)
- Population230,402
- Jan 52° 33°
- Feb 57° 36°
- Mar 66° 43°
- Apr 75° 51°
- May 83° 60°
- Jun 89° 68°
- Jul 92° 71°
- Aug 91° 70°
- Sep 87° 63°
- Oct 76° 52°
- Nov 64° 41°
- Dec 55° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Huntsville in August?
The normal high is 91°F and the normal low 70°F, for a daily mean of 80.5°F. August is 0.8°F cooler than July and 5.6°F warmer than September. August is the 2nd warmest month of the year in Huntsville and the 11th wettest. Across the month the normal high falls 2°F, from 92°F on August 1 to 90°F on August 31. From one year to the next August's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 78°F and 83°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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 92°F | 71°F | 32% | 21% |
| August 8 | 92°F | 71°F | 31% | 20% |
| August 15 | 92°F | 70°F | 30% | 19% |
| August 22 | 91°F | 69°F | 28% | 17% |
| August 31 | 90°F | 68°F | 26% | 16% |
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 | 92°F | 71°F | 32% | 21% | 13 h 50 min |
| August 2 | 92°F | 71°F | 32% | 21% | 13 h 50 min |
| August 3 | 92°F | 71°F | 32% | 21% | 13 h 50 min |
| August 4 | 92°F | 71°F | 32% | 21% | 13 h 50 min |
| August 5 | 92°F | 71°F | 31% | 21% | 13 h 50 min |
| August 6 | 92°F | 71°F | 31% | 20% | 13 h 50 min |
| August 7 | 92°F | 71°F | 31% | 20% | 13 h 40 min |
| August 8 | 92°F | 71°F | 31% | 20% | 13 h 40 min |
| August 9 | 92°F | 71°F | 31% | 20% | 13 h 40 min |
| August 10 | 92°F | 70°F | 31% | 20% | 13 h 40 min |
| August 11 | 92°F | 70°F | 31% | 20% | 13 h 40 min |
| August 12 | 92°F | 70°F | 30% | 19% | 13 h 40 min |
| August 13 | 92°F | 70°F | 30% | 19% | 13 h 30 min |
| August 14 | 92°F | 70°F | 30% | 19% | 13 h 30 min |
| August 15 | 92°F | 70°F | 30% | 19% | 13 h 30 min |
| August 16 | 92°F | 70°F | 30% | 19% | 13 h 30 min |
| August 17 | 92°F | 70°F | 29% | 18% | 13 h 30 min |
| August 18 | 91°F | 70°F | 29% | 18% | 13 h 20 min |
| August 19 | 91°F | 70°F | 29% | 18% | 13 h 20 min |
| August 20 | 91°F | 70°F | 29% | 18% | 13 h 20 min |
| August 21 | 91°F | 69°F | 28% | 17% | 13 h 20 min |
| August 22 | 91°F | 69°F | 28% | 17% | 13 h 20 min |
| August 23 | 91°F | 69°F | 28% | 17% | 13 h 10 min |
| August 24 | 91°F | 69°F | 28% | 17% | 13 h 10 min |
| August 25 | 91°F | 69°F | 27% | 17% | 13 h 10 min |
| August 26 | 91°F | 69°F | 27% | 17% | 13 h 10 min |
| August 27 | 91°F | 68°F | 27% | 17% | 13 h 10 min |
| August 28 | 91°F | 68°F | 27% | 17% | 13 h |
| August 29 | 90°F | 68°F | 27% | 16% | 13 h |
| August 30 | 90°F | 68°F | 27% | 16% | 13 h |
| August 31 | 90°F | 68°F | 26% | 16% | 13 h |
- Normal high
- 91°FAugust average
- Normal low
- 70°FAugust average
- Precipitation
- 3.55 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 17
- Daylight
- 13 h 50 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003856; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Huntsville in August?
On a given August day the chance of 0.01 inch or more is 29% on average, highest around August 1 (32%). In all, 3.55 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Huntsville, 17 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003856.
How humid and windy is Huntsville in August?
At 3 p.m. the normal temperature is 87°F with 50% relative humidity and a dew point of 66°F; at 6 a.m. it is 69°F with 91% humidity. The wind averages 5.3 mph, most often from the east in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 69°F | 66°F | 91% | 3.7 mph | 54% |
| 9 a.m. | 79°F | 68°F | 68% | 6.5 mph | 55% |
| noon | 85°F | 67°F | 54% | 7.1 mph | 30% |
| 3 p.m. | 87°F | 66°F | 50% | 7.6 mph | 38% |
| 6 p.m. | 81°F | 67°F | 62% | 5.8 mph | 55% |
| 9 p.m. | 75°F | 67°F | 78% | 4.4 mph | 70% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003856. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Huntsville?
The warmest August temperature on Huntsville's official record (since 1907) is 108°F, on August 8, 1930; the coldest is 50°F, on August 26, 1917. The wettest August brought 12.61 in (1901).
The August mean against the 1991-2020 normal of 80.5°F: 2021 79.1°F (−1.4), 2022 79.8°F (−0.7), 2023 80.0°F (−0.5), 2024 81.3°F (+0.8), 2025 79.1°F (−1.4), 2026 80.1°F (−0.4). 1 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.1°F | −1.4°F | 6.41 in |
| 2022 | 79.8°F | −0.7°F | 2.76 in |
| 2023 | 80.0°F | −0.5°F | 5.16 in |
| 2024 | 81.3°F | +0.8°F | 0.89 in |
| 2025 | 79.1°F | −1.4°F | 1.04 in |
| 2026 | 80.1°F | −0.4°F | 6.80 in |
Source: records: ACIS, NWS threaded record HSVthr; recent months: ACIS, station USW00003856. Records and recent months use complete months only.
How does August in Huntsville compare across Alabama?
Across the 80 places PlainClimate covers in Alabama, August normal highs run from 87°F in Valley Head to 94°F in Eufaula; Huntsville's is 91°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.