Grafton weather in April

In April, Grafton sees average daytime highs of 56°F and overnight lows near 39°F, with 3.7 in of precipitation across 11.3 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 51°F in the first days to 61°F by the end. The sky is clear or mostly clear about 24% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is Grafton's 11th-clearest and 5th-windiest month. For the whole year in context, see Grafton's year-round climate.

Daytime high
56°
7th warmest
Overnight low
39°
6th coldest
Precipitation
3.7 in
11.3 wet days
Daylight
13 h 06 min
5:13 AM – 6:21 PM
Cloud cover
66%
11th clearest
Wind
8 mph
5th windiest
Solar energy
4.89 kWh/m²
Travel score
3.7
out of 10

Grafton is town in Massachusetts, US.

Founded
1718

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 51°F in the first days to 61°F by the end.

A typical April day in Grafton reaches about 56°F in the afternoon and slips back to 39°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 45°F and 69°F. Set against its neighbours, April runs about 12°F warmer than March and about 10°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15034
25135
35135
45235
55236
65336
75336
85337
95437
105537
115538
125538
135638
145639
155739
165740
175840
185840
195840
205841
215941
225942
235942
246042
256042
266043
276143
286143
296144
306244

How April really feels in Grafton

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 11 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
11
wind chill below the day's low

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

Grafton weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 20°3.49.86.49.30.0
Feb37° / 21°3.18.65.710.30.0
Mar44° / 29°4.210.75.211.60.9
Apr56° / 39°3.711.31.513.13.7
May67° / 49°3.210.8014.45.9
Jun76° / 58°3.911.50156.5
Jul82° / 64°3.610.6014.86.2
Aug80° / 63°3.810.2013.76.6
Sep72° / 55°3.68.5012.36.9
Oct60° / 44°3.99.80.310.85.0
Nov49° / 35°3.49.11.29.62.1
Dec39° / 26°4.310.55.590.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33664
43664
53664
63664
73664
83664
93763
103763
113862
123763
133862
143862
153961
163862
173862
183961
193961
204060
214060
224060
233961
243961
253862
263862
273862
283862
293862
303862

Chance of precipitation in April

Any precipitationSnow

Grafton gets around 3.7 in of rain and snow over 11.3 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 39% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
13911
23910
33910
4399
5399
6398
7388
8387
9377
10376
11376
12366
13365
14365
15364
16364
17374
18374
19373
20373
21383
22383
23383
24382
25392
26392
27392
28392
29391
30391

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69910
79910
89910
99910
109910
119910
129820
139820
149820
159820
169820
179820
189820
199820
209820
219730
229730
239730
249631
259631
269631
279631
289631
299541
309541

Wind in April

Winds average 8 mph in April.

Across April, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 5:39 AM to 4:51 AM, and sunset from 6:04 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:396:04
212.55:376:05
312.55:356:06
412.65:336:08
512.65:326:09
612.75:306:10
712.75:286:11
812.85:266:12
912.85:256:13
1012.95:236:14
1112.95:216:16
1213.05:196:17
1313.05:186:18
1413.05:166:19
1513.15:146:20
1613.15:136:21
1713.25:116:22
1813.25:096:23
1913.35:086:25
2013.35:066:26
2113.45:056:27
2213.45:036:28
2313.55:016:29
2413.55:006:30
2513.54:586:31
2613.64:576:33
2713.64:556:34
2813.74:546:35
2913.74:536:36
3013.84:516:37

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.89 kWh/m².

For context, solar energy here swings from a low near 1.61 kWh/m² to a high of 5.87 kWh/m² in July across the year — April's 4.89 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
154.9Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.2Bright
Planning a trip in April

Is April a good time to visit Grafton?

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

3.7
Sightseeing
7th-best month of the year
0.2
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Grafton.

What to pack for Grafton in April

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

In April, Grafton sees daytime highs around 56°F and nights near 39°F. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

Sea temperature near Grafton in April

The nearest coast averages about 42°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 43 mi away) is warmest in August at about 66°F and coldest in February near 38°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan41Bracing
Feb38Bracing
Mar38Bracing
Apr42Bracing
May50Bracing
Jun58Bracing
Jul65Cool
Aug66Cool
Sep63Cool
Oct56Bracing
Nov50Bracing
Dec46Bracing

UV index in Grafton in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Grafton peaks around July 10 at about 7 (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 7Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun7Very high
Jul7Very high
Aug5Moderate
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Grafton?

Grafton sits at 42.2°N, 71.7°W, 476 ft above sea level, in United States. The nearest listed city is Shrewsbury, 6.2 mi away.

Topography around Grafton

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

Within 2 miles, the terrain around Grafton has only modest variations in elevation — a maximum elevation change of 374 ft around an average of 440 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 771 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,176 ft.

The land around Grafton is covered by trees (81%) within 2 miles, trees (79%) within 10 miles, and trees (84%) within 50 miles.

2 miles
374 ft
10 miles
771 ft
50 miles
3,176 ft
treesgrasslandcroplandartificial surfaceswaterwetland
April weather nearby: Shrewsbury 6.2 mi · Worcester 6.8 mi · Auburn 7.5 mi · Milford 9.9 mi · Marlborough 12 mi · Ashland 12 mi · Holden 14 mi · Framingham Center 14 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 Grafton (42.207°, -71.6856°, elevation 476 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. 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).