Plainfield weather in August

In August, Plainfield sees average daytime highs of 80°F and overnight lows near 63°F, with 4.5 in of rain across 11 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 82°F in the first days to 78°F by the end. The sky is clear or mostly clear about 32% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 18 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Plainfield's 4th-clearest and 12th-windiest month. For the whole year in context, see Plainfield's year-round climate.

Daytime high
80°
2nd warmest
Overnight low
63°
11th coldest
Rainfall
4.5 in
11 wet days
Daylight
13 h 42 min
5:01 AM – 6:43 PM
Cloud cover
58%
4th clearest
Wind
6 mph
12th windiest
Solar energy
5.21 kWh/m²
Travel score
6.4
out of 10

Plainfield is town in Connecticut, United States.

Density
139/km²
people per km²
Founded
1699

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 82°F in the first days to 78°F by the end.

A typical August day in Plainfield reaches about 80°F in the afternoon and slips back to 63°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 88°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18265
28265
38265
48265
58264
68264
78264
88264
98164
108164
118164
128164
138164
148163
158063
168063
178063
188063
198062
208062
218062
228062
238062
247962
257961
267961
277961
287961
297861
307860
317860

How August really feels in Plainfield

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.

Plainfield weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan36° / 21°3.69.85.79.30.0
Feb38° / 23°3.18.6510.30.0
Mar46° / 30°4.310.64.411.71.2
Apr58° / 40°3.811.10.913.14.1
May68° / 49°3.310.7014.36.0
Jun77° / 58°4.111.40156.5
Jul83° / 64°3.911.3014.75.8
Aug80° / 63°4.511013.76.4
Sep73° / 55°4.08.8012.36.9
Oct62° / 45°4.19.60.210.95.3
Nov51° / 35°3.68.70.89.62.5
Dec41° / 27°4.310.54.590.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
64951
74951
84951
94852
104852
114852
124852
134852
144852
154951
164951
175050
185050
195050
205149
215248
225248
235347
245446
255347
265347
275347
285347
295446
305347
315347

Chance of precipitation in August

Any precipitation

Plainfield gets around 4.5 in of rain over 11 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 40% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
339
439
539
638
738
838
938
1038
1138
1238
1337
1437
1537
1637
1736
1836
1935
2035
2134
2233
2332
2432
2531
2630
2730
2829
2928
3028
3128

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 24% of days. Sticky, muggy-or-worse air turns up on roughly 31% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11620272611
21721262611
31721262611
41721252611
51821252511
61821252511
71821252511
81921242511
91921242511
101921242510
112021242510
122021242510
13202224259
14202224259
15202224258
16202325248
17212325248
18212325247
19212425237
20222425236
21222524226
22232524226
23242623216
24252623216
25262722206
26272722195
27282721185
28292721185
29302721176
30302721166
31312721166

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 18 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 78 minutes over August. Sunrise moves from 4:46 AM to 5:17 AM, and sunset from 7:02 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:467:02
214.24:477:01
314.24:487:00
414.24:496:58
514.14:506:57
614.14:516:56
714.14:526:55
814.04:536:54
914.04:546:52
1013.94:556:51
1113.94:566:50
1213.94:576:48
1313.84:586:47
1413.84:596:45
1513.75:006:44
1613.75:016:43
1713.65:026:41
1813.65:036:40
1913.65:046:38
2013.55:056:36
2113.55:066:35
2213.45:076:33
2313.45:086:32
2413.35:096:30
2513.35:116:29
2613.35:126:27
2713.25:136:25
2813.25:146:24
2913.15:156:22
3013.15:166:20
3113.05:176:19

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.21 kWh/m².

For context, solar energy here swings from a low near 1.67 kWh/m² to a high of 5.97 kWh/m² in June across the year — August's 5.21 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Plainfield

In seasonPeak

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

Plainfield 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 Plainfield?

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

6.4
Sightseeing
3rd-best month of the year
6.5
Beach & pool
2nd-best month of the year

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

What to pack for Plainfield in August

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

In August, Plainfield sees daytime highs around 80°F and nights near 63°F. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Plainfield in August

The nearest coast averages about 69°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 25 mi away) is warmest in August at about 69°F and coldest in February near 39°F.

It's comfortable for a long swim from Jul 29 to Aug 30 — about 1.1 months when the water holds above 68°F.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°F)Comfort
Jan43Bracing
Feb39Bracing
Mar40Bracing
Apr44Bracing
May51Bracing
Jun60Cool
Jul67Cool
Aug69Refreshing
Sep67Cool
Oct62Cool
Nov55Bracing
Dec48Bracing

UV index in Plainfield in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Plainfield peaks around July 10 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 10UV 8Dec 23UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug5High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Plainfield?

Plainfield sits at 41.7°N, 71.9°W, 197 ft above sea level, in United States. The nearest listed city is Killingly Center, 11 mi away.

Topography around Plainfield

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

Within 2 miles, the terrain around Plainfield has only modest variations in elevation — a maximum elevation change of 531 ft around an average of 279 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 778 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,430 ft.

The land around Plainfield is covered by trees (75%) within 2 miles, trees (87%) within 10 miles, and trees (66%) and water (26%) within 50 miles.

2 miles
531 ft
10 miles
778 ft
50 miles
1,430 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Killingly Center 11 mi · Coventry 12 mi · Windham 12 mi · Norwich 14 mi · Willimantic 16 mi · Ledyard 17 mi · Mansfield City 17 mi · Montville Center 18 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 Plainfield (41.6765°, -71.9151°, elevation 197 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).