Weather StoryAlmanac, microseasons, and the day's weather story.

Lyons, Illinois Weather

Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →

Lyons weather forecast — hour by hour, 7-day outlook, NOAA radar

Lyons, IL
Saturday, July 4 at 6:46 AM
71
°
Overcast
Feels like
75°
Humidity
93%
Wind
6 mph
Sunrise
12:21 AM
Sunset
3:29 PM
Lyons, IL
Hour by hour · 24h
24-Hour ForecastLyons, IL: 24-hour forecast. Temperatures range from 66 to 81 degrees Fahrenheit with a 43% chance of precipitation at 7 PM.
L 66°H 81°
Lyons, IL
7-day forecast
  1. Today
    Jul 4
    Showers
    80%
    0.77″
    81°68°—
  2. Sunday
    Jul 5
    Overcast
    17%
    —
    75°66°-6°
  3. Monday
    Jul 6
    Overcast
    10%
    —
    82°67°+7°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    85°65°+3°
  5. Wednesday
    Jul 8
    Overcast
    22%
    —
    86°65°+1°
  6. Thursday
    Jul 9
    Light Showers
    36%
    0.22″
    81°68°-5°
  7. Friday
    Jul 10
    Overcast
    36%
    —
    82°67°+1°
Lyons, IL
Next 24 hours · Mild now
62°74°86°6a12p6p12anow 70°high 81°low 66°PRECIP %
Lyons, IL
Anemometer · 24h winds · from true
NESW
From · True
WSW
251° · veering 67°
Direction
WSW
251°
Sustained
6
mph
Gust
13
mph
Peak 24h
19
avg 5
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 5 · pk 19 @ 9:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 212SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 67° from the wsw.
Lyons, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
993.1
-1.5 mb in 3h · falling · 29.33 inHg
Now
993.1
mb
3h
-1.5
mb
12h
-0.2
mb
24h
-2.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 992–996
9859909951000STORM|RAIN-21h-18h-15h-12h-9h-6h-3h-24hNOW996.0992.3992.3
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Lyons, IL
Air quality
46
AQI
Good
↑+5 in 6h

AQI 46 (Good), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 8.2 µg/m³ (AQI 46) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
8.2μg/m³
PM 10Good
8μg/m³
NO₂Good
12μg/m³
OzoneGood
60μg/m³
UV IndexLow
0.1

What's driving it

PM × Wind × Precip

PM2.5 at 8.2 µg/m³ (AQI 46) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.98
Wind
light
Recent rain
0h in last 6h
Pattern
stagnant smoke

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³320
Lyons, IL
Sky cover · visibility · 24h
Cloud cover
86%
MOSTLY CLOUDY
100%0%−24h−18h−12h−6hnow
Visibility
26.9mi
UNLIMITED
56 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
11:46 UTC · Lyons, IL · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
11:46 UTC · Lyons, IL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Lyons, IL
Satellite · infrared · animated
Lyons, IL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Lyons, IL
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:48 AM
Sunrise
12:21 AM
Daylight
15h 08m
Sunset
3:29 PM
Civil dusk
9:04 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Lyons, IL
The moon
Waning Gibbous
82% illuminated
Moonrise
10:49 PM
Moonset
9:55 AM
In sign
♓︎ Pisces
Lyons, IL
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Lyons at a glance

  • Today vs. normal: 71°F — typical for the season
  • Last frost: April 27 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 60534

16-Day Forecast — Lyons

  1. Sat81°68°80%
  2. Sun75°66°17%
  3. Mon82°67°10%
  4. Tue85°65°2%
  5. Wed86°65°22%
  6. Thu81°68°36%
  7. Fri82°67°36%
  8. Sat86°65°19%
  9. Sun73°64°9%
  10. Mon78°62°10%
  11. Tue80°64°11%
  12. Wed86°66°17%
  13. Thu89°69°23%
  14. Fri88°73°26%
  15. Sat91°72°13%
  16. Sun91°73°24%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — Lyons

SPC includes Lyons in the general thunderstorm area today — no severe risk, but storms are possible.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3NONENo severe risk

Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

January 1–5: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins return.December 26–31: The year turns in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the afternoon

Annual cicada buzz begins, peaking in the heat of the day.

Day 185 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

In Lyons, July runs warmest near 76°F and January coldest around 24°F, while May is the wettest month (4.2 inches) and January the driest (2.0 inches).

MonthMean tempPrecipRainy days
January24°2.0″16
February27°2.1″14
March37°3.0″16
April50°3.8″17
May59°4.2″18
June70°4.0″17
July76°2.9″15
August75°3.0″14
September68°3.1″14
October55°3.0″13
November40°3.2″16
December28°2.5″15

Regional context

Drawing on NOAA NCEI 1991-2020 normals, Lyons's January averages 24°F and July 76°F — 53°F apart — while precipitation totals roughly 36.8 inches over some 184 days.

No season owns Lyons's rain: May reaches 4.2 inches across 18.2 days and January keeps 2.0 inches on 15.7, an even spread through Lyons's year. That lines Lyons up with places like Riverside, IL, McCook, IL and Brookfield, IL, fed by overlapping storm tracks.

The cool-season window in Lyons starts at mid-April, when nights stop freezing — think kale, peas, spinach, and parsnips. Warm-soil crops in Lyons wait about two weeks past Lyons's last frost, once the soil warms. Lyons's window closes around mid-November as overnight lows return below freezing. In Lyons, low spots run 4-7°F colder than nearby slopes, nudging Lyons's frost dates a week.

Similar climates: Riverside, IL, McCook, IL, Brookfield, IL, Summit, IL, Forest View, IL.

Frequently asked

When does it freeze in Lyons?
Lyons's last spring frost lands near mid-April, and in Lyons the first fall frost follows around mid-November.
What is the rainy season in Lyons?
Lyons sees its heaviest rain in May (around 4.2 inches), part of roughly 37 inches a year.
What is the warmest month in Lyons?
The warmest stretch in Lyons comes in July, around 76°F on average.
What is the coldest month in Lyons?
On average January is the chilliest month in Lyons, about 24°F.
When can I start a vegetable garden in Lyons?
Time tomatoes in Lyons for two weeks after mid-April; peas and greens start at Lyons's frost line.
How many rainy days does Lyons get?
Lyons records around 184 days of measurable precipitation annually.
What hardiness zone is Lyons?
Lyons's USDA zone comes from its January mean (24°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Lyons?
Lyons's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Lyons?
See this week's day-by-day rain chances for Lyons in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Lyons?
Current conditions for Lyons and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Lyons forecast updated?
The Lyons forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Lyons?
Today's sunrise and sunset times for Lyons are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Lyons?
The next few days in Lyons's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Lyons's warm-summer humid continental climate in Illinois pairs 24°F Januarys with 76°F Julys, 52°F apart across the seasons.

Yearly precipitation in Lyons totals around 37 inches, spread over about 184 days of rain or snow.

The 52°F gap between Lyons's summer and winter, at 41.8°N, shapes Lyons's frost calendar.

All cities in Illinois →

Berwyn, IL weather →

ZIP codes in Lyons

  • 60534
  • 60525

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.