Easton weather in May

In May, Easton sees average daytime highs of 70°F and overnight lows near 51°F, with 3.7 in of rain across 11.4 wet days and about 14.2 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 66°F in the first days to 75°F by the end. The sky is clear or mostly clear about 22% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Easton's 12th-clearest and 8th-windiest month. For the whole year in context, see Easton's year-round climate.

Daytime high
70°
5th warmest
Overnight low
51°
8th coldest
Rainfall
3.7 in
11.4 wet days
Daylight
14 h 18 min
4:49 AM – 7:05 PM
Cloud cover
64%
12th clearest
Wind
6 mph
8th windiest
Solar energy
5.61 kWh/m²
Travel score
6.2
out of 10

Easton is city in and the county seat of Northampton County, Pennsylvania, United States of America.

Density
2,217/km²
people per km²
Founded
1752

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 66°F in the first days to 75°F by the end.

A typical May day in Easton reaches about 70°F in the afternoon and slips back to 51°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 58°F and 82°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)
16546
26647
36647
46647
56748
66748
76748
86749
96849
106849
116849
126950
136950
146950
157051
167051
177051
187151
197152
207152
217253
227253
237353
247354
257354
267454
277455
287455
297555
307556
317556

How May really feels in Easton

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.

Easton weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.69.65.29.40.0
Feb40° / 24°3.18.94.610.40.1
Mar48° / 31°4.110.93.811.71.8
Apr60° / 42°3.910.70.513.14.7
May70° / 51°3.711.4014.26.2
Jun79° / 60°4.111014.96.3
Jul84° / 65°3.610.2014.65.4
Aug82° / 64°3.79.8013.66.1
Sep75° / 56°4.38.8012.37.0
Oct63° / 45°4.18.70.210.95.7
Nov51° / 35°3.38.30.89.72.7
Dec41° / 28°4.19.93.49.10.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34357
44357
54357
64258
74258
84258
94357
104258
114258
124258
134258
144258
154258
164159
174258
184357
194258
204258
214258
224258
234258
244357
254357
264258
274357
284357
294456
304357
314357

Chance of precipitation in May

Any precipitation

Easton gets around 3.7 in of rain over 11.4 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 37% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
636
736
836
936
1036
1137
1237
1337
1437
1537
1637
1737
1837
1937
2037
2137
2237
2337
2437
2537
2637
2737
2837
2937
3037
3137

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 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
188930
2871030
3861040
4851140
5851140
6831250
7831250
8811360
9811360
10801370
11791470
12771481
13771481
14761491
15761491
167415101
177315102
187215112
197016113
206916123
216617134
226617134
236417145
246217156
256118156
265918167
275918167
285818168
295718178
305519179
315419189

Wind in May

Winds average 6 mph in May.

Across May, 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 May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 42 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 5:07 AM to 4:38 AM, and sunset from 6:49 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:076:49
213.85:056:51
313.85:046:52
413.85:036:53
513.95:026:54
613.95:006:55
713.94:596:56
814.04:586:57
914.04:576:58
1014.14:566:59
1114.14:557:00
1214.14:537:01
1314.24:527:02
1414.24:517:03
1514.24:507:04
1614.34:497:05
1714.34:487:06
1814.34:477:07
1914.44:477:08
2014.44:467:09
2114.44:457:10
2214.44:447:11
2314.54:437:12
2414.54:437:12
2514.54:427:13
2614.64:417:14
2714.64:417:15
2814.64:407:16
2914.64:397:17
3014.64:397:18
3114.74:387:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.61 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.99 kWh/m² in June across the year — May's 5.61 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in May

Is May a good time to visit Easton?

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

6.2
Sightseeing
3rd-best month of the year
3.9
Beach & pool
5th-best month of the year

May is a reasonable time to visit Easton for sightseeing.

What to pack for Easton in May

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

In May, Easton sees daytime highs around 70°F and nights near 51°F. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Easton in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Easton peaks around July 10 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Easton in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Easton is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1518 µg/m³Nov 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May16Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Easton?

Easton sits at 40.7°N, 75.2°W, 318 ft above sea level, in United States. The nearest listed city is Bethlehem, 8.7 mi away.

Topography around Easton

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

Within 2 miles, the terrain around Easton has only modest variations in elevation — a maximum elevation change of 669 ft around an average of 348 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,191 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,516 ft.

The land around Easton is covered by trees (48%) and artificial surfaces (32%) within 2 miles, trees (50%), cropland (21%) and grassland (20%) within 10 miles, and trees (75%) within 50 miles.

2 miles
669 ft
10 miles
1,191 ft
50 miles
2,516 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Bethlehem 8.7 mi · Whitehall Township 15 mi · Allentown 15 mi · Bridgewater 30 mi · Lansdale 31 mi · Hopatcong Hills 34 mi · Hillsborough 34 mi · Basking Ridge 35 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 Easton (40.6884°, -75.2207°, elevation 318 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).