Huntsville weather in August

In August, Huntsville sees average daytime highs of 87°F and overnight lows near 70°F, with 3.1 in of rain across 11.1 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 87°F through the month. The sky is clear or mostly clear about 33% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Huntsville's 4th-clearest and 11th-windiest month. For the whole year in context, see Huntsville's year-round climate.

Daytime high
87°
2nd warmest
Overnight low
70°
11th coldest
Rainfall
3.1 in
11.1 wet days
Daylight
13 h 18 min
5:11 AM – 6:30 PM
Cloud cover
56%
4th clearest
Wind
4 mph
11th windiest
Solar energy
5.61 kWh/m²
Travel score
4.5
out of 10

Huntsville is county seat of Madison County, Alabama, United States.

Density
387/km²
people per km²
Founded
1805

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 87°F through the month.

A typical August day in Huntsville reaches about 87°F in the afternoon and slips back to 70°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 94°F. Set against its neighbours, August runs on par with July and about 5°F warmer than September.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18871
28871
38871
48871
58871
68871
78871
88871
98871
108871
118870
128870
138870
148870
158870
168870
178870
188770
198770
208770
218770
228769
238769
248769
258769
268769
278769
288769
298769
308668
318668

How August really feels in Huntsville

Once humidity and wind are folded in, August averages 28 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
28
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Huntsville weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan50° / 33°5.110.30.79.92.2
Feb54° / 36°4.9110.910.73.2
Mar62° / 43°5.711.80.311.75.2
Apr71° / 51°4.910.4012.86.5
May78° / 60°4.211.1013.86.5
Jun85° / 68°4.112.5014.34.9
Jul88° / 71°4.412.9014.14.2
Aug87° / 70°3.111.1013.34.5
Sep83° / 64°3.67.5012.26.3
Oct72° / 52°3.47.2011.17.3
Nov61° / 42°4.29010.25.2
Dec53° / 36°5.511.20.39.72.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25149
35149
45149
55149
65248
75347
85347
95446
105446
115446
125446
135545
145644
155644
165644
175644
185842
195842
205842
215743
225743
235743
245644
255743
265743
275743
285743
295644
305842
315743

Chance of precipitation in August

Any precipitation

Huntsville gets around 3.1 in of rain over 11.1 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 39% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
539
639
739
839
939
1039
1139
1239
1338
1438
1537
1637
1736
1835
1935
2034
2134
2234
2334
2433
2533
2633
2732
2831
2931
3030
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the oppressive band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 78% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
103836521
203836521
303936511
403937510
5031037500
6141036490
7141136480
8141236470
9141235470
10141335470
11141434461
12151533461
13151532461
14151631461
15151731451
16151731451
17151831441
18151831431
19151832421
20151833411
21151835410
22151835400
23151837390
24151838370
25161839360
26161940350
27161941330
28162041310
29272141290
30272242270
31282342250

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:00 AM to 5:22 AM, and sunset from 6:45 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:006:45
213.75:006:44
313.75:016:43
413.75:026:43
513.65:036:42
613.65:036:41
713.65:046:40
813.65:056:39
913.55:066:38
1013.55:066:37
1113.55:076:35
1213.45:086:34
1313.45:096:33
1413.45:106:32
1513.35:106:31
1613.35:116:30
1713.35:126:29
1813.25:136:27
1913.25:136:26
2013.25:146:25
2113.15:156:24
2213.15:166:22
2313.15:166:21
2413.05:176:20
2513.05:186:19
2613.05:196:17
2712.95:196:16
2812.95:206:15
2912.95:216:13
3012.85:226:12
3112.85:226:10

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.61 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 6.16 kWh/m² in June across the year — August's 5.61 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.4Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.2Bright
Planning a trip in August

Is August a good time to visit Huntsville?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.5
Sightseeing
8th-best month of the year
6.6
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Huntsville for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Huntsville in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Huntsville sees daytime highs around 87°F and nights near 70°F. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Huntsville in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Huntsville peaks around July 11 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highHighModerateJul 11UV 10Dec 19UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Huntsville in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Huntsville is worst in July — around 19 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (January, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1619 µg/m³Jan 116 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar9Good
Apr10Good
May13Moderate
Jun16Moderate
Jul19Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov7Good
Dec6Good
Location & terrain

Where is Huntsville?

Huntsville sits at 34.7°N, 86.6°W, 633 ft above sea level, in United States. The nearest listed city is Madison, 9.3 mi away.

Topography around Huntsville

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Huntsville.

Within 2 miles, the terrain around Huntsville has only modest variations in elevation — a maximum elevation change of 459 ft around an average of 669 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,165 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,555 ft.

The land around Huntsville is covered by trees (42%) and artificial surfaces (42%) within 2 miles, trees (53%) and grassland (23%) within 10 miles, and trees (59%) and grassland (26%) within 50 miles.

2 miles
459 ft
10 miles
1,165 ft
50 miles
1,555 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Madison 9.3 mi · Athens 22 mi · Decatur 24 mi · Albertville 39 mi · Cullman 41 mi · Tullahoma 48 mi · Shelbyville 53 mi · Gadsden 60 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Huntsville (34.7304°, -86.5859°, elevation 633 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).