Greenfield weather in August

In August, Greenfield sees average daytime highs of 82°F and overnight lows near 65°F, with 2.8 in of rain across 9.5 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 11th-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 37% 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 13 hours by month's end. Set against the rest of the year, August is Greenfield's 2nd-clearest and 12th-windiest month. For the whole year in context, see Greenfield's year-round climate.

Daytime high
82°
2nd warmest
Overnight low
65°
11th coldest
Rainfall
2.8 in
9.5 wet days
Daylight
13 h 36 min
6:00 AM – 7:35 PM
Cloud cover
53%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.69 kWh/m²
Travel score
6.4
out of 10

Greenfield is city in Indiana, United States; county seat of Hancock County.

Density
655/km²
people per km²
Founded
1828

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 Greenfield reaches about 82°F in the afternoon and slips back to 65°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 89°F. Set against its neighbours, August runs on par with July and about 5°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18366
28366
38366
48365
58365
68365
78265
88265
98265
108265
118265
128265
138265
148265
158265
168265
178265
188265
198264
208264
218264
228264
238264
248264
258264
268264
278264
288264
298263
308263
318263

How August really feels in Greenfield

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.

Greenfield weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan36° / 22°3.39.94.49.50.0
Feb40° / 24°2.78.84.210.40.1
Mar51° / 33°4.010.92.111.72.4
Apr63° / 44°4.712.60.5135.1
May72° / 55°4.913.5014.26.1
Jun81° / 64°4.211.9014.86.0
Jul83° / 67°3.611.6014.55.6
Aug82° / 65°2.89.5013.66.4
Sep77° / 57°3.07.9012.37.2
Oct65° / 46°3.38.80.110.96.0
Nov51° / 35°3.59.10.99.82.6
Dec40° / 27°3.310.53.59.20.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65644
75644
85644
95545
105545
115644
125545
135545
145644
155644
165644
175743
185743
195743
205743
215743
225842
235743
245743
255743
265743
275842
285842
295842
305842
315842

Chance of precipitation in August

Any precipitation

Greenfield gets around 2.8 in of rain over 9.5 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 31% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
134
233
333
432
532
631
731
831
931
1031
1131
1231
1331
1430
1530
1630
1730
1830
1930
2030
2130
2230
2330
2430
2530
2630
2729
2829
2929
3029
3128

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 26% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
18222525200
28222525190
38232525190
48232525190
59232525180
69232524181
79232524171
810232524171
910232424171
1010232425171
1111242425161
1211242325161
1311242325161
1411242326151
1511242326141
1611242327141
1711242327131
1811242428131
1911242428121
2011242428121
2112242428121
2212232429120
2312232429110
2413222429110
2514222429110
2615212429110
2716212428110
2818212328100
2919202327100
3020202327100
312120232690

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 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
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 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 66 minutes over August. Sunrise moves from 5:45 AM to 6:14 AM, and sunset from 7:53 PM to 7:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:457:53
214.15:467:52
314.15:477:51
414.05:487:50
514.05:497:48
614.05:507:47
713.95:517:46
813.95:527:45
913.85:537:44
1013.85:547:43
1113.85:557:41
1213.75:567:40
1313.75:577:39
1413.75:587:37
1513.65:597:36
1613.66:007:35
1713.56:017:33
1813.56:027:32
1913.56:037:30
2013.46:047:29
2113.46:057:27
2213.36:067:26
2313.36:077:24
2413.36:087:23
2513.26:087:21
2613.26:097:20
2713.16:107:18
2813.16:117:17
2913.06:127:15
3013.06:137:14
3113.06:147:12

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.69 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 6.27 kWh/m² in July across the year — August's 5.69 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Bright
56.0Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.4Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
315.2Bright
Planning a trip in August

Is August a good time to visit Greenfield?

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

6.4
Sightseeing
2nd-best month of the year
7.0
Beach & pool
1st-best month of the year

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

What to pack for Greenfield in August

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

In August, Greenfield sees daytime highs around 82°F and nights near 65°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Greenfield 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 Greenfield peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 21UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Greenfield 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 Greenfield 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 1317 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar12Good
Apr12Good
May14Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Greenfield?

Greenfield sits at 39.8°N, 85.8°W, 883 ft above sea level, in United States. The nearest listed city is Lawrence, 14 mi away.

Topography around Greenfield

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

Within 2 miles, the terrain around Greenfield has only modest variations in elevation — a maximum elevation change of 85 ft around an average of 886 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 299 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 837 ft.

The land around Greenfield is covered by cropland (28%), grassland (27%) and trees (23%) within 2 miles, cropland (69%) within 10 miles, and cropland (61%) and trees (25%) within 50 miles.

2 miles
85 ft
10 miles
299 ft
50 miles
837 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Lawrence 14 mi · Fishers 17 mi · Shelbyville 18 mi · Broad Ripple 21 mi · Indianapolis 21 mi · Greenwood 22 mi · Noblesville 22 mi · Anderson 22 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 Greenfield (39.785°, -85.7694°, elevation 883 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).