Machesney Park weather in May

In May, Machesney Park sees average daytime highs of 69°F and overnight lows near 50°F, with 4.3 in of precipitation across 12.7 wet days and about 14.4 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 64°F in the first days to 74°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 Machesney Park's 6th-clearest and 8th-windiest month. For the whole year in context, see Machesney Park's year-round climate.

Daytime high
69°
5th warmest
Overnight low
50°
8th coldest
Precipitation
4.3 in
12.7 wet days
Daylight
14 h 24 min
4:40 AM – 7:04 PM
Cloud cover
65%
6th clearest
Wind
8 mph
8th windiest
Solar energy
5.7 kWh/m²
Travel score
5.9
out of 10

Machesney Park is village in Winnebago County, Illinois.

Density
680/km²
people per km²

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 64°F in the first days to 74°F by the end.

A typical May day in Machesney Park reaches about 69°F in the afternoon and slips back to 50°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 57°F and 82°F. Set against its neighbours, May runs about 11°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16445
26445
36446
46546
56546
66547
76647
86647
96748
106748
116748
126849
136849
146849
156950
166950
176950
187051
197051
207151
217152
227152
237152
247253
257253
267353
277354
287354
297455
307455
317455

How May really feels in Machesney Park

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.

Machesney Park 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
Jan29° / 15°1.97.45.69.30.0
Feb33° / 18°1.86.95.210.30.0
Mar46° / 29°2.59.53.111.61.2
Apr58° / 39°4.211.90.913.14.0
May69° / 50°4.312.70.114.45.9
Jun78° / 60°4.011.70156.4
Jul82° / 64°3.410014.86.4
Aug80° / 62°3.49.7013.76.7
Sep73° / 54°3.38.7012.37.0
Oct60° / 42°2.98.70.210.85.1
Nov46° / 31°2.47.91.89.61.3
Dec34° / 21°2.17.64.690.0

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 15% of May, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23664
33664
43664
53565
63664
73763
83763
93961
103961
113961
123961
134060
144060
154060
164060
174060
184159
194060
204159
214159
224159
234159
244159
254258
264357
274258
284258
294456
304456
314555

Chance of precipitation in May

Any precipitation

Machesney Park gets around 4.3 in of rain and snow over 12.7 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 precipitation averages around 41% and peaks near 42% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
241
341
441
542
642
742
842
941
1041
1141
1241
1341
1440
1540
1640
1740
1840
1940
2041
2141
2241
2341
2441
2541
2641
2741
2841
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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
191720
289821
389821
487931
587931
6851041
7851041
8831151
9821152
10811162
11811162
12791272
13791272
14791272
15771283
16761383
17741394
18741394
19731395
20721495
217014106
227014106
236715117
246615118
256516118
266416128
276217129
286117139
2959181310
3059181310
3157191410

Wind in May

Winds average 8 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
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
318light breeze

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 4:59 AM to 4:28 AM, and sunset from 6:48 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:596:48
213.94:576:49
313.94:566:50
413.94:556:51
514.04:536:52
614.04:526:54
714.14:516:55
814.14:506:56
914.14:486:57
1014.24:476:58
1114.24:466:59
1214.34:457:00
1314.34:447:01
1414.34:437:02
1514.44:417:03
1614.44:407:04
1714.44:397:05
1814.54:387:06
1914.54:377:07
2014.54:377:08
2114.64:367:09
2214.64:357:10
2314.64:347:11
2414.74:337:12
2514.74:327:13
2614.74:327:14
2714.74:317:15
2814.84:307:16
2914.84:307:17
3014.84:297:18
3114.84:287:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.7 kWh/m².

For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 6.3 kWh/m² in June across the year — May's 5.7 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
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
316.0Intense
Planning a trip in May

Is May a good time to visit Machesney Park?

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

5.9
Sightseeing
5th-best month of the year
3.4
Beach & pool
5th-best month of the year

May is a reasonable time to visit Machesney Park for sightseeing.

What to pack for Machesney Park in May

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

In May, Machesney Park sees daytime highs around 69°F and nights near 50°F. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Machesney Park 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 Machesney Park peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highHighModerateLowJun 19UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Machesney Park 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 Machesney Park is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1915 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr12Good
May13Moderate
Jun14Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Machesney Park?

Machesney Park sits at 42.3°N, 89.0°W, 741 ft above sea level, in United States. The nearest listed city is Loves Park, 1.9 mi away.

Topography around Machesney Park

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

Within 2 miles, the terrain around Machesney Park has only modest variations in elevation — a maximum elevation change of 210 ft around an average of 751 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 325 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 581 ft.

The land around Machesney Park is covered by artificial surfaces (35%), trees (34%) and grassland (25%) within 2 miles, cropland (37%), trees (28%) and grassland (21%) within 10 miles, and cropland (64%) within 50 miles.

2 miles
210 ft
10 miles
325 ft
50 miles
581 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Loves Park 1.9 mi · Rockford 6.2 mi · Beloit 11 mi · Belvidere 11 mi · Janesville 23 mi · Freeport 30 mi · Woodstock 30 mi · Sycamore 30 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 Machesney Park (42.3472°, -89.039°, elevation 741 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).