Hilliard weather in May

In May, Hilliard sees average daytime highs of 71°F and overnight lows near 53°F, with 4.5 in of rain across 13.3 wet days and about 14.2 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 68°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 36 min by month's end. Set against the rest of the year, May is Hilliard's 7th-clearest and 8th-windiest month. For the whole year in context, see Hilliard's year-round climate.

Daytime high
71°
5th warmest
Overnight low
53°
8th coldest
Rainfall
4.5 in
13.3 wet days
Daylight
14 h 12 min
5:23 AM – 7:35 PM
Cloud cover
65%
7th clearest
Wind
8 mph
8th windiest
Solar energy
5.72 kWh/m²
Travel score
6.1
out of 10

Hilliard is city in Franklin County, Ohio, United States.

Density
972/km²
people per km²
Founded
1853

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 68°F in the first days to 75°F by the end.

A typical May day in Hilliard reaches about 71°F in the afternoon and slips back to 53°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 83°F. Set against its neighbours, May runs about 9°F warmer than April and about 8°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16748
26748
36849
46849
56849
66950
76950
86951
96951
107051
117051
127052
137152
147152
157153
167153
177253
187253
197254
207354
217355
227355
237455
247456
257456
267456
277557
287557
297557
307658
317658

How May really feels in Hilliard

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.

Hilliard weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan36° / 22°3.110.34.89.50.0
Feb40° / 24°2.69.14.410.40.1
Mar50° / 32°3.711.42.611.72.1
Apr62° / 43°4.512.30.5134.9
May71° / 53°4.513.3014.26.1
Jun80° / 62°4.111.9014.86.2
Jul83° / 66°3.511.2014.65.7
Aug82° / 64°3.09.7013.66.4
Sep76° / 56°2.88.2012.37.1
Oct64° / 45°2.990.210.95.8
Nov51° / 35°3.19.11.19.82.5
Dec40° / 28°3.39.83.19.20.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33763
43664
53664
63862
73862
83862
93961
103961
113862
124060
134060
143961
153961
164060
174060
184060
194159
204159
214159
224159
234258
244258
254357
264357
274456
284555
294357
304357
314456

Chance of precipitation in May

Any precipitation

Hilliard gets around 4.5 in of rain over 13.3 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
242
342
442
542
642
743
843
943
1043
1144
1244
1344
1444
1544
1644
1744
1843
1943
2043
2143
2243
2342
2442
2542
2642
2742
2842
2941
3041
3141

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 63% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1841240
2821350
3801460
4801460
5771571
6761581
7741691
87216102
97216102
107016113
116916123
126817123
136617134
146517144
156417145
166317155
176217156
186017167
195818177
205718178
215618188
225418199
2352191910
2451192010
2550192011
2649192011
2749192111
2848192112
2947192112
3046192213
3145192214

Wind in May

Winds average 8 mph in May.

Across May, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
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
227light breeze
237light breeze
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:40 AM to 5:12 AM, and sunset from 7:20 PM to 7:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:407:20
213.75:387:21
313.85:377:22
413.85:367:23
513.85:357:24
613.95:337:25
713.95:327:26
813.95:317:27
914.05:307:28
1014.05:297:29
1114.05:287:30
1214.15:277:31
1314.15:267:32
1414.15:257:33
1514.25:247:34
1614.25:237:35
1714.25:227:36
1814.35:217:37
1914.35:207:38
2014.35:197:39
2114.45:187:40
2214.45:187:41
2314.45:177:42
2414.45:167:42
2514.55:157:43
2614.55:157:44
2714.55:147:45
2814.55:147:46
2914.65:137:47
3014.65:127:47
3114.65:127:48

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.72 kWh/m².

For context, solar energy here swings from a low near 1.63 kWh/m² to a high of 6.24 kWh/m² in June across the year — May's 5.72 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.4Bright
45.4Bright
55.4Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
266.0Bright
276.0Bright
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Is May a good time to visit Hilliard?

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

6.1
Sightseeing
4th-best month of the year
4.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hilliard for sightseeing.

What to pack for Hilliard in May

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

In May, Hilliard sees daytime highs around 71°F and nights near 53°F. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Hilliard 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 Hilliard peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 21UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Hilliard 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 Hilliard is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1117 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr12Good
May14Moderate
Jun17Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Hilliard?

Hilliard sits at 40.0°N, 83.2°W, 935 ft above sea level, in United States. The nearest listed city is Dublin, 5.0 mi away.

Topography around Hilliard

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

Within 2 miles, the terrain around Hilliard has only modest variations in elevation — a maximum elevation change of 154 ft around an average of 925 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 518 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,007 ft.

The land around Hilliard is covered by grassland (35%), artificial surfaces (30%) and trees (24%) within 2 miles, trees (30%), cropland (27%) and grassland (21%) within 10 miles, and cropland (56%) and trees (26%) within 50 miles.

2 miles
154 ft
10 miles
518 ft
50 miles
1,007 ft
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Dublin 5.0 mi · Upper Arlington 5.6 mi · Columbus 9.9 mi · Grove City 11 mi · Westerville 14 mi · Gahanna 15 mi · Whitehall 15 mi · Marysville 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 Hilliard (40.0334°, -83.1582°, elevation 935 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).