Decatur weather in July

In July, Decatur sees average daytime highs of 88°F and overnight lows near 72°F, with 4.2 in of rain across 13.1 wet days and about 14.1 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 88°F through the month. The sky is clear or mostly clear about 29% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 18 min at the start of July to 13 h 48 min by month's end. Set against the rest of the year, July is Decatur's 8th-clearest and 11th-windiest month. For the whole year in context, see Decatur's year-round climate.

Daytime high
88°
1st warmest
Overnight low
72°
12th coldest
Rainfall
4.2 in
13.1 wet days
Daylight
14 h 06 min
4:50 AM – 6:57 PM
Cloud cover
59%
8th clearest
Wind
4 mph
11th windiest
Solar energy
6.08 kWh/m²
Travel score
4.2
out of 10

Decatur is city in Morgan and Limestone counties, Alabama, United States.

Density
354/km²
people per km²
Founded
1821

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 88°F through the month.

A typical July day in Decatur reaches about 88°F in the afternoon and slips back to 72°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 82°F and 93°F. Set against its neighbours, July runs about 2°F warmer than June and on par with August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18771
28771
38772
48872
58872
68872
78872
88872
98872
108872
118872
128872
138872
148872
158872
168872
178873
188873
198873
208873
218873
228872
238872
248872
258872
268872
278872
288872
298872
308872
318872

How July really feels in Decatur

Once humidity and wind are folded in, July averages 31 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
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

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

Decatur weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan51° / 35°4.99.90.69.92.4
Feb55° / 38°4.710.40.610.73.4
Mar63° / 45°5.511.40.211.75.4
Apr71° / 53°5.010.1012.86.6
May79° / 62°4.210.9013.86.5
Jun86° / 69°4.312.6014.34.8
Jul88° / 72°4.213.1014.14.2
Aug88° / 71°3.111.5013.34.4
Sep83° / 65°3.57.7012.26.3
Oct73° / 53°3.47.4011.17.3
Nov61° / 43°4.08.50.110.25.4
Dec53° / 37°5.210.70.39.73.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
64951
75050
85050
95050
104951
115050
125050
135050
145149
155149
165149
175149
185248
195149
205149
215149
225149
235149
245248
255248
265149
275149
285248
295248
305248
315149

Chance of precipitation in July

Any precipitation

Decatur gets around 4.2 in of rain over 13.1 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
245
345
445
544
644
744
844
944
1044
1144
1243
1343
1443
1543
1643
1742
1842
1942
2042
2141
2241
2341
2440
2540
2640
2740
2840
2940
3040
3140

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1131232511
2131131531
3131030551
4131029561
513928581
613927591
712826621
812725641
912724651
1012724651
1102623681
1202622691
1302622691
1402521702
1502520712
1602620702
1702620702
1802619712
1903619702
2003719692
2102719702
2202720692
2302820682
2402821672
2502821672
2602922652
2702924632
2802925622
2902926612
3002927602
3102828602

Wind in July

Winds average 4 mph in July.

Across July, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 18 min at the start of July to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over July. Sunrise moves from 4:42 AM to 5:01 AM, and sunset from 7:00 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:427:00
214.34:437:00
314.34:437:00
414.34:447:00
514.34:447:00
614.24:457:00
714.24:456:59
814.24:466:59
914.24:466:59
1014.24:476:59
1114.24:476:59
1214.24:486:58
1314.24:486:58
1414.14:496:58
1514.14:506:57
1614.14:506:57
1714.14:516:56
1814.14:526:56
1914.14:526:55
2014.04:536:55
2114.04:546:54
2214.04:546:54
2314.04:556:53
2413.94:566:53
2513.94:566:52
2613.94:576:51
2713.94:586:50
2813.94:596:50
2913.84:596:49
3013.85:006:48
3113.85:016:47

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.08 kWh/m².

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 6.2 kWh/m² in June across the year — July's 6.08 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Bright
296.0Bright
306.0Bright
315.9Bright
Planning a trip in July

Hazard calendar for Decatur

In seasonPeak

In July, Decatur sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Decatur sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Decatur?

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

4.2
Sightseeing
9th-best month of the year
6.2
Beach & pool
5th-best month of the year

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

What to pack for Decatur in July

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

In July, Decatur sees daytime highs around 88°F and nights near 72°F. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.

light clothessun protectionrain gear

UV index in Decatur in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Decatur peaks around July 12 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 12UV 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 Decatur in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Decatur is worst in July — around 19 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (January, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1719 µg/m³Jan 116 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr10Good
May13Moderate
Jun16Moderate
Jul19Moderate
Aug16Moderate
Sep11Good
Oct8Good
Nov7Good
Dec6Good
Location & terrain

Where is Decatur?

Decatur sits at 34.6°N, 87.0°W, 561 ft above sea level, in United States. The nearest listed city is Athens, 14 mi away.

Topography around Decatur

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

Within 2 miles, the terrain around Decatur has only modest variations in elevation — a maximum elevation change of 138 ft around an average of 571 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 505 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,621 ft.

The land around Decatur is covered by trees (31%), water (30%) and artificial surfaces (22%) within 2 miles, trees (43%) and cropland (23%) within 10 miles, and trees (62%) and grassland (23%) within 50 miles.

2 miles
138 ft
10 miles
505 ft
50 miles
1,621 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Athens 14 mi · Madison 15 mi · Huntsville 24 mi · Cullman 31 mi · East Florence 40 mi · Florence 42 mi · Albertville 50 mi · Dixiana 63 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 Decatur (34.6059°, -86.9833°, elevation 561 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).