Bourbonnais weather in May

In May, Bourbonnais sees average daytime highs of 71°F and overnight lows near 52°F, with 4.6 in of rain across 12.9 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 67°F in the first days to 75°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 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 Bourbonnais's 7th-clearest and 8th-windiest month. For the whole year in context, see Bourbonnais's year-round climate.

Daytime high
71°
5th warmest
Overnight low
52°
8th coldest
Rainfall
4.6 in
12.9 wet days
Daylight
14 h 18 min
4:39 AM – 6:57 PM
Cloud cover
64%
7th clearest
Wind
9 mph
8th windiest
Solar energy
5.74 kWh/m²
Travel score
6.1
out of 10

Bourbonnais is village in Kankakee County, Illinois, United States of America.

Density
757/km²
people per km²
Founded
1832

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 67°F in the first days to 75°F by the end.

A typical May day in Bourbonnais reaches about 71°F in the afternoon and slips back to 52°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 84°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)
16647
26647
36748
46748
56748
66849
76849
86949
96950
106950
116950
127051
137051
147051
157152
167152
177152
187253
197253
207253
217354
227354
237354
247455
257455
267455
277556
287556
297557
307657
317657

How May really feels in Bourbonnais

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.

Bourbonnais 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
Jan32° / 19°2.48.65.39.40.0
Feb37° / 22°2.07.34.210.40.0
Mar49° / 31°3.010.12.511.71.9
Apr61° / 41°4.312.10.713.14.7
May71° / 52°4.612.9014.36.1
Jun80° / 62°4.212.2014.96.1
Jul83° / 66°3.611.2014.75.7
Aug82° / 64°3.59.7013.66.5
Sep76° / 56°3.08.3012.37.1
Oct63° / 44°3.29.10.110.95.7
Nov49° / 34°2.88.61.29.72.1
Dec37° / 24°2.28.33.59.10.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33862
43961
53961
63862
73862
83961
93961
103961
114060
124159
134159
144258
154159
164258
174258
184258
194357
204357
214357
224258
234357
244357
254456
264456
274357
284357
294357
304456
314456

Chance of precipitation in May

Any precipitation

Bourbonnais gets around 4.6 in of rain over 12.9 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 42% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
243
343
443
543
643
743
842
942
1042
1142
1242
1342
1442
1542
1642
1742
1842
1942
2041
2141
2241
2341
2441
2541
2641
2742
2842
2942
3042
3142

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
18710210
28511310
38412310
48312410
58113420
68113420
77814530
87814530
97615630
107515640
117415740
127316740
137216840
147017850
157017850
166917950
176817960
1866181060
1965181070
2064181170
2163181180
2262181280
2358191391
2458191391
25561914101
26552014101
27532015111
28532015111
29512115121
30502116121
31492116131

Wind in May

Winds average 9 mph in May.

Across May, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

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 4:56 AM to 4:28 AM, and sunset from 6:41 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.74:566:41
213.84:556:42
313.84:546:43
413.94:536:44
513.94:516:45
613.94:506:46
714.04:496:47
814.04:486:48
914.14:466:50
1014.14:456:51
1114.14:446:52
1214.24:436:53
1314.24:426:54
1414.24:416:55
1514.34:406:56
1614.34:396:57
1714.34:386:58
1814.44:376:59
1914.44:367:00
2014.44:357:01
2114.54:347:02
2214.54:347:03
2314.54:337:03
2414.54:327:04
2514.64:317:05
2614.64:317:06
2714.64:307:07
2814.64:297:08
2914.74:297:09
3014.74:287:10
3114.74:287:10

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.74 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.33 kWh/m² in June across the year — May's 5.74 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.6Bright
115.6Bright
125.6Bright
135.7Bright
145.7Bright
155.7Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
256.0Bright
266.0Bright
276.0Bright
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Is May a good time to visit Bourbonnais?

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

6.1
Sightseeing
3rd-best month of the year
4.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Bourbonnais for sightseeing.

What to pack for Bourbonnais in May

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

In May, Bourbonnais sees daytime highs around 71°F and nights near 52°F. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

Sea temperature near Bourbonnais in May

The nearest coast averages about 46°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 42 mi away) is warmest in August at about 73°F and coldest in February near 35°F.

It's comfortable for a long swim from Jul 10 to Sep 16 — about 2.3 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb35Bracing
Mar35Bracing
Apr39Bracing
May46Bracing
Jun59Cool
Jul70Refreshing
Aug73Refreshing
Sep68Refreshing
Oct58Bracing
Nov49Bracing
Dec42Bracing

UV index in Bourbonnais 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 Bourbonnais peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Bourbonnais 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 Bourbonnais is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1418 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar15Moderate
Apr15Moderate
May17Moderate
Jun17Moderate
Jul18Moderate
Aug16Moderate
Sep12Moderate
Oct8Good
Nov9Good
Dec10Good
Location & terrain

Where is Bourbonnais?

Bourbonnais sits at 41.2°N, 87.9°W, 650 ft above sea level, in United States. The nearest listed city is Bradley, 1.9 mi away.

Topography around Bourbonnais

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

Within 2 miles, the terrain around Bourbonnais has only modest variations in elevation — a maximum elevation change of 174 ft around an average of 659 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 272 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 597 ft.

The land around Bourbonnais is covered by artificial surfaces (32%), trees (27%) and grassland (21%) within 2 miles, cropland (75%) within 10 miles, and cropland (68%) within 50 miles.

2 miles
174 ft
10 miles
272 ft
50 miles
597 ft
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Bradley 1.9 mi · Kankakee 2.5 mi · Frankfort 24 mi · New Lenox 25 mi · Mokena 25 mi · Park Forest 26 mi · Matteson 26 mi · Joliet 27 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 Bourbonnais (41.1538°, -87.8875°, elevation 650 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. 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).