Plainfield weather in May

In May, Plainfield sees average daytime highs of 68°F and overnight lows near 49°F, with 3.3 in of rain across 10.7 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 63°F in the first days to 72°F by the end. The sky is clear or mostly clear about 25% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 48 min by month's end. Set against the rest of the year, May is Plainfield's 12th-clearest and 8th-windiest month. For the whole year in context, see Plainfield's year-round climate.

Daytime high
68°
5th warmest
Overnight low
49°
8th coldest
Rainfall
3.3 in
10.7 wet days
Daylight
14 h 18 min
4:34 AM – 6:54 PM
Cloud cover
65%
12th clearest
Wind
7 mph
8th windiest
Solar energy
5.57 kWh/m²
Travel score
6.0
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 63°F in the first days to 72°F by the end.

A typical May day in Plainfield reaches about 68°F in the afternoon and slips back to 49°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 56°F and 80°F. Set against its neighbours, May runs about 10°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16345
26345
36445
46446
56446
66446
76546
86547
96547
106547
116647
126648
136648
146748
156749
166749
176849
186849
196950
206950
216950
227051
237051
247051
257152
267152
277153
287253
297253
307253
317354

How May really feels in Plainfield

Once humidity and wind are folded in, May 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

May 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 May compares with the rest of the year at a glance. May is the 5th-warmest and 11th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34159
44060
53961
63961
73862
83961
93961
104060
114060
123961
133961
144060
154060
164060
173961
183961
193961
203961
214060
224060
234060
244159
254159
264060
274258
284258
294159
304258
314159

Chance of precipitation in May

Any precipitation

Plainfield gets around 3.3 in of rain over 10.7 wet days in May. 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 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
536
636
736
836
936
1036
1136
1236
1336
1436
1536
1636
1735
1835
1935
2034
2134
2233
2333
2433
2533
2632
2732
2833
2933
3033
3133

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
194510
294510
393610
492620
592620
691720
791720
891720
990820
1090820
1188930
1288930
1388930
14871030
15861040
16851140
17851140
18841240
19821251
20801361
21801361
22781471
23761581
24751681
25731692
26721792
277018102
286918112
296819112
306619123
316520123

Wind in May

Winds average 7 mph in May.

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

0246810151015202531
Wind speed (mph)Feels
17light breeze
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

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

Days grow by about 60 minutes over May. Sunrise moves from 4:52 AM to 4:22 AM, and sunset from 6:38 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:526:38
213.84:506:39
313.94:496:40
413.94:486:41
513.94:466:42
614.04:456:44
714.04:446:45
814.14:436:46
914.14:416:47
1014.14:406:48
1114.24:396:49
1214.24:386:50
1314.24:376:51
1414.34:366:52
1514.34:356:53
1614.34:346:54
1714.44:336:55
1814.44:326:56
1914.44:316:57
2014.54:306:58
2114.54:296:59
2214.54:287:00
2314.64:277:01
2414.64:277:02
2514.64:267:03
2614.64:257:04
2714.74:247:05
2814.74:247:06
2914.74:237:06
3014.74:237:07
3114.84:227:08

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.57 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 — May's 5.57 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Hazard calendar for Plainfield

In seasonPeak

None of Plainfield's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 May a good time to visit Plainfield?

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

6.0
Sightseeing
4th-best month of the year
3.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Plainfield for sightseeing.

What to pack for Plainfield in May

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

In May, Plainfield sees daytime highs around 68°F and nights near 49°F. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Plainfield in May

The nearest coast averages about 51°F in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — 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
May 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).