Middle River weather in August

In August, Middle River sees average daytime highs of 82°F and overnight lows near 71°F, with 3.6 in of rain across 10.4 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 34% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Middle River's 4th-clearest and 11th-windiest month. For the whole year in context, see Middle River's year-round climate.

Daytime high
82°
2nd warmest
Overnight low
71°
11th coldest
Rainfall
3.6 in
10.4 wet days
Daylight
13 h 36 min
5:23 AM – 6:57 PM
Cloud cover
55%
4th clearest
Wind
6 mph
11th windiest
Solar energy
5.28 kWh/m²
Travel score
6.1
out of 10

Middle River is census designated place in Baltimore County, Maryland, United States.

Density
1,143/km²
people per km²

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 82°F through the month.

A typical August day in Middle River reaches about 82°F in the afternoon and slips back to 71°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 77°F and 88°F. Set against its neighbours, August runs about 2°F cooler than July and about 6°F warmer than September.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18372
28372
38372
48372
58372
68372
78372
88372
98372
108372
118371
128371
138371
148271
158271
168271
178271
188271
198271
208271
218270
228270
238270
248270
258170
268170
278170
288169
298169
308169
318169

How August really feels in Middle River

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

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Middle River weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 30°3.692.79.50.0
Feb42° / 31°3.39.13.110.50.4
Mar50° / 37°4.510.52.111.72.2
Apr61° / 47°3.810.40.2134.9
May70° / 57°3.811014.16.3
Jun79° / 67°3.510.9014.76.5
Jul84° / 72°3.811.4014.55.5
Aug82° / 71°3.610.4013.56.1
Sep76° / 64°4.79.4012.37.0
Oct65° / 53°4.08.40116.2
Nov54° / 42°3.48.30.29.83.5
Dec45° / 35°4.39.61.69.31.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25446
35446
45446
55446
65446
75446
85347
95446
105446
115446
125446
135446
145545
155545
165644
175644
185644
195743
205743
215842
225842
235842
245842
255842
265842
275842
285842
295743
305743
315644

Chance of precipitation in August

Any precipitation

Middle River gets around 3.6 in of rain over 10.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
337
437
537
637
737
838
938
1038
1138
1238
1338
1438
1537
1637
1736
1835
1934
2033
2132
2231
2330
2430
2529
2629
2729
2829
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1491933341
24101933341
34101933341
44101932331
55101932331
65101932331
75101932331
85101932331
95101931322
106102031322
116102031312
126102131312
136102131302
146102231302
156102231292
166102331291
176102431281
186102431271
196112531271
206112531261
216112531261
226122630251
236122630251
247132629251
257132629241
268132728241
278142727241
289142726231
299142726231
3010142725231
3110152725221

Wind in August

Winds average 6 mph in August.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:09 AM to 5:37 AM, and sunset from 7:14 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:097:14
214.15:107:13
314.05:117:12
414.05:127:11
514.05:137:10
613.95:147:09
713.95:157:08
813.95:167:07
913.85:177:06
1013.85:187:04
1113.75:187:03
1213.75:197:02
1313.75:207:01
1413.65:216:59
1513.65:226:58
1613.65:236:57
1713.55:246:55
1813.55:256:54
1913.45:266:52
2013.45:276:51
2113.45:286:49
2213.35:296:48
2313.35:306:47
2413.25:316:45
2513.25:326:44
2613.25:336:42
2713.15:346:40
2813.15:356:39
2913.05:366:37
3013.05:366:36
3112.95:376:34

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.28 kWh/m².

For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 6.07 kWh/m² in June across the year — August's 5.28 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.9Bright
314.8Bright
Planning a trip in August

Hazard calendar for Middle River

In seasonPeak

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

Middle River 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 August a good time to visit Middle River?

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

6.1
Sightseeing
5th-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for Middle River in August

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

In August, Middle River sees daytime highs around 82°F and nights near 71°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Middle River in August

The nearest coast averages about 78°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 mi away) is warmest in August at about 78°F and coldest in February near 36°F.

It's comfortable for a long swim from Jun 16 to Oct 5 — about 3.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar40Bracing
Apr47Bracing
May58Bracing
Jun68Refreshing
Jul76Warm
Aug78Warm
Sep74Refreshing
Oct65Cool
Nov53Bracing
Dec44Bracing

UV index in Middle River in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Middle River peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 10UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug6High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Middle River 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 Middle River is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec10Good
Location & terrain

Where is Middle River?

Middle River sits at 39.3°N, 76.4°W, 26 ft above sea level, in United States. The nearest listed city is Rossville, 1.9 mi away.

Topography around Middle River

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

Within 2 miles, the terrain around Middle River has only modest variations in elevation — a maximum elevation change of 184 ft around an average of 56 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 614 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,388 ft.

The land around Middle River is covered by trees (40%) and artificial surfaces (39%) within 2 miles, trees (37%), water (30%) and artificial surfaces (20%) within 10 miles, and trees (49%) within 50 miles.

2 miles
184 ft
10 miles
614 ft
50 miles
1,388 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Rossville 1.9 mi · Essex 2.5 mi · Rosedale 4.3 mi · Perry Hall 5.6 mi · Frankford 5.6 mi · Carney 6.2 mi · Parkville 6.2 mi · Dundalk 7.5 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 Middle River (39.3343°, -76.4394°, elevation 26 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).