Marysville weather in August

In August, Marysville sees average daytime highs of 81°F and overnight lows near 64°F, with 3.0 in of rain across 9.8 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 81°F through the month. The sky is clear or mostly clear about 35% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Marysville's 2nd-clearest and 12th-windiest month. For the whole year in context, see Marysville's year-round climate.

Daytime high
81°
2nd warmest
Overnight low
64°
11th coldest
Rainfall
3.0 in
9.8 wet days
Daylight
13 h 36 min
5:49 AM – 7:26 PM
Cloud cover
54%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.54 kWh/m²
Travel score
6.5
out of 10

Marysville is city in Union County, Ohio, United States.

Density
532/km²
people per km²
Founded
1816

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 81°F through the month.

A typical August day in Marysville reaches about 81°F in the afternoon and slips back to 64°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 88°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18265
28265
38265
48265
58264
68264
78264
88264
98264
108264
118264
128264
138164
148164
158164
168164
178164
188163
198163
208163
218163
228163
238163
248163
258163
268163
278162
288062
298062
308062
318062

How August really feels in Marysville

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.

Marysville weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 21°3.110.65.59.50.0
Feb39° / 24°2.594.710.40.0
Mar49° / 32°3.6112.711.71.9
Apr62° / 42°4.512.60.8134.8
May71° / 52°4.413.6014.26.0
Jun80° / 62°4.111.9014.86.2
Jul83° / 65°3.611.3014.65.9
Aug81° / 64°3.09.8013.66.5
Sep75° / 56°2.88.5012.37.1
Oct63° / 45°2.98.70.210.95.7
Nov50° / 35°3.19.21.29.82.3
Dec40° / 27°3.29.93.89.20.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75743
85644
95644
105644
115644
125743
135743
145743
155743
165743
175743
185842
195842
205743
215743
225743
235743
245743
255743
265842
275842
285842
295842
305842
315941

Chance of precipitation in August

Any precipitation

Marysville gets around 3.0 in of rain over 9.8 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 32% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
334
434
533
633
733
832
932
1032
1132
1232
1332
1432
1532
1632
1732
1832
1932
2032
2132
2232
2331
2431
2531
2631
2731
2831
2930
3030
3130

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11023282910
21123282810
3112328289
4122328289
5122328279
6132327279
7142327279
8142327279
9152326279
10152326279
11162325279
12162325279
13162325279
14172325278
15172324278
16172324288
17172324288
18172424287
19172424287
20172424287
21172424297
22172424296
23172424296
24172424296
25182423286
26192423286
27192423286
28202423276
29212522276
30222522265
31232522255

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 6 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
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:35 AM to 6:04 AM, and sunset from 7:44 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:357:44
214.15:367:43
314.15:377:42
414.15:387:41
514.05:397:40
614.05:407:39
713.95:417:37
813.95:427:36
913.95:427:35
1013.85:437:34
1113.85:447:33
1213.85:457:31
1313.75:467:30
1413.75:477:29
1513.65:487:27
1613.65:497:26
1713.65:507:24
1813.55:517:23
1913.55:527:21
2013.45:537:20
2113.45:547:19
2213.45:557:17
2313.35:567:15
2413.35:577:14
2513.25:587:12
2613.25:597:11
2713.26:007:09
2813.16:017:08
2913.16:027:06
3013.06:037:04
3113.06:047:03

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.54 kWh/m².

For context, solar energy here swings from a low near 1.62 kWh/m² to a high of 6.24 kWh/m² in June across the year — August's 5.54 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.4Bright
215.4Bright
225.4Bright
235.3Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Marysville?

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

6.5
Sightseeing
2nd-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Marysville in August

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

In August, Marysville sees daytime highs around 81°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Marysville in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Marysville peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Marysville 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 Marysville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar12Moderate
Apr12Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Marysville?

Marysville sits at 40.2°N, 83.4°W, 991 ft above sea level, in United States. The nearest listed city is Delaware, 16 mi away.

Topography around Marysville

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

Within 2 miles, the terrain around Marysville has only modest variations in elevation — a maximum elevation change of 154 ft around an average of 1,007 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 292 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,010 ft.

The land around Marysville is covered by grassland (31%), trees (26%) and cropland (20%) within 2 miles, cropland (61%) within 10 miles, and cropland (63%) and trees (20%) within 50 miles.

2 miles
154 ft
10 miles
292 ft
50 miles
1,010 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Delaware 16 mi · Dublin 16 mi · Hilliard 18 mi · Upper Arlington 23 mi · Westerville 24 mi · Columbus 27 mi · Marion 27 mi · Grove City 29 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 Marysville (40.2364°, -83.3671°, elevation 991 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).