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Leland Grove, Illinois Weather

Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →

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

Leland Grove, IL
Sunday, July 5 at 10:34 AM
78
°
Partly Cloudy
Feels like
85°
Humidity
80%
Wind
5 mph
Sunrise
12:36 AM
Sunset
3:29 PM
Leland Grove, IL
Hour by hour · 24h
24-Hour ForecastLeland Grove, IL: 24-hour forecast. Temperatures range from 69 to 87 degrees Fahrenheit.
L 69°H 87°
Leland Grove, IL
7-day forecast
  1. Today
    Jul 5
    Foggy
    —
    —
    87°70°—
  2. Monday
    Jul 6
    Overcast
    —
    —
    86°69°-1°
  3. Tuesday
    Jul 7
    Overcast
    —
    —
    81°65°-5°
  4. Wednesday
    Jul 8
    Partly Cloudy
    —
    —
    84°64°+3°
  5. Thursday
    Jul 9
    Thunderstorm
    37%
    0.62″
    87°70°+3°
  6. Friday
    Jul 10
    T-storm w/ Hail
    45%
    0.04″
    81°70°-6°
  7. Saturday
    Jul 11
    Drizzle
    27%
    0.04″
    83°69°+2°
Leland Grove, IL
Next 24 hours · Mild now
HOT 90°64°77°90°6a12p6p12anow 76°high 87°low 69°
Leland Grove, IL
Anemometer · 24h winds · from true
NESW
From · True
NNE
014° · veering 164°
Direction
NNE
014°
Sustained
5
mph
Gust
8
mph
Peak 24h
20
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 20 @ 3:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 137SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Leland Grove, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
992.5
+0.2 mb in 3h · steady · 29.31 inHg
Now
992.5
mb
3h
+0.2
mb
12h
+1.4
mb
24h
-1.6
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 991–994
9859909951000STORM|RAIN-21h-18h-15h-12h-9h-6h-3h-24hNOW994.0990.6992.4
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Leland Grove, IL
Air quality
30
AQI
Good
→+3 in 6h▲Peak ~42 @ 10 PM

AQI 30 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 37 now. With UV 4.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 22 around 1 PM.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.

PM 2.5Good
4.7μg/m³
PM 10Good
6μg/m³
NO₂Good
3μg/m³
OzoneDRIVERModerate
78μg/m³
UV IndexModerate
3.1

What's driving it

Ozone × UV × Sky

Ozone at AQI 37 now. With UV 4.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 22 around 1 PM.

Present
AQI 37
UV peak
4.4 at 1 PM
Sky at peak
clear
Projected peak
AQI 22

PM × Wind × Precip

PM2.5 at 4.7 µg/m³ (AQI 26) with a 0.84 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.84
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 TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³300
Leland Grove, IL
Sky cover · visibility · 24h
Cloud cover
65%
PARTLY CLOUDY
100%0%−24h−18h−12h−6hnow
Visibility
33.6mi
UNLIMITED
57 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
15:34 UTC · Leland Grove, 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
15:34 UTC · Leland Grove, IL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Leland Grove, IL
Satellite · infrared · animated
Leland Grove, IL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Leland Grove, IL
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:05 AM
Sunrise
12:36 AM
Daylight
14h 53m
Sunset
3:29 PM
Civil dusk
9:03 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Leland Grove, IL
The moon
Waning Gibbous
71% illuminated
Moonrise
11:16 PM
Moonset
11:11 AM
In sign
♓︎ Pisces
Leland Grove, IL
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Leland Grove at a glance

  • Today vs. normal: 6°F above the seasonal normal for this latitude
  • Last frost: April 15 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Leland Grove

  1. Sun88°70°7%
  2. Mon86°69°4%
  3. Tue81°65°1%
  4. Wed84°64°6%
  5. Thu87°70°37%
  6. Fri81°70°45%
  7. Sat83°69°27%
  8. Sun86°69°14%
  9. Mon89°70°8%
  10. Tue92°75°4%
  11. Wed81°63°5%
  12. Thu78°55°26%
  13. Fri82°62°25%
  14. Sat87°66°35%
  15. Sun87°73°42%
  16. Mon89°72°29%

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

Right now in the garden

Peak growing season

As of July 5, 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 — Leland Grove

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

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWNONENo severe risk
  • 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: Frost quiets the live oaks.January 6–10: Still water thickens with ice.January 11–15: Springs begin to move beneath ice.January 16–20: Cardinal dawn calls grow bolder.January 21–25: Late January thaw pulses.January 26–31: Last freeze locks the land.February 1–5: February's lengthening light.February 6–10: Warming winds thaw the margin.February 11–15: Magnolia blooms break the gray.February 16–20: Mockingbirds resume the dawn chorus.February 21–25: Rain replaces the last snow.February 26–28: Mist clings to greening valleys.March 1–5: The green pulse awakens.March 6–10: Hibernators emerge to call.March 11–15: Dogwood and redbud ignite.March 16–20: Swallowtails emerge from winter silk.March 21–25: Light crowns the dogwood canopy.March 26–31: Redbud cascades over the thaw.April 1–5: Thunder announces the wet season.April 6–10: Barn swallows carve the warming sky.April 11–15: Magnolia blooms and falls in a breath.April 16–20: First rainbows arch over thunderheads.April 21–25: Reeds push through marsh water.April 26–30: Frost retreats; seedlings rise free.May 1–5: Warblers flood the canopy in waves.May 6–10: Tulip poplar lights the forest crown.May 11–15: Shad pulse upstream through rapids.May 16–20: Roses open on the Piedmont edge.May 21–25: Fireflies scout the humid dusk.May 26–31: Frog choruses rise from every wetland.June 1–5: Fireflies pulse through the magnolias.June 6–10: Kudzu climbs deeper into green.June 11–15: Sun climbs to its northern throne.June 16–20: Heat settles and the rain begins.June 21–25: The longest day turns toward shadow.June 26–30: Fireflies drift through Spanish moss.July 1–5: Cicadas claim the scorching afternoon.July 6–10: Thunderheads boil and break at dusk.July 11–15: Thunder builds each drowsy afternoon.July 16–20: Cicadas claim the long noon.July 21–25: Dog days drape the earth in haze.July 26–31: Katydids begin their rasping chorus.August 1–5: Dusk arrives one minute earlier each night.August 6–10: Meteorological summer's turning page.August 11–15: Cool winds gather at the margins.August 16–20: Dog-day cicadas rise.August 21–25: Heat breaks in creek beds.August 26–31: Monarchs gather strength.September 1–5: Harvests begin in earnest.September 6–10: Dew beads on resurrection fern.September 11–15: Raptors trail the thermals.September 16–20: Day and dark find balance.September 21–25: Thunder quiets the land.September 26–30: Insects retreat below.October 1–5: Swamp waters recede.October 6–10: Maples ignite the ridge.October 11–15: Asters crown the meadows.October 16–20: Crickets sing at dusk.October 21–25: Frost paints the garden.October 26–31: Light rains whisper down.November 1–5: Sweetgum Turns Crimson.November 6–10: Camellia Blooms Break Through.November 11–15: Earth Stiffens Underfoot.November 16–20: Bare Limbs Hold the Light.November 21–25: First Frost Grips the High Ground.November 26–30: North Wind Strips the Last Leaves.December 1–5: Darkness Falls Before Dinner.December 6–10: Winter Locks the Land.December 11–15: Wildlife Retreats to Shelter.December 16–20: Ice Edges Deepen Inward.December 21–25: The Sun Begins its 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 scorching afternoon

Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.

Day 186 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

Leland Grove's warmest month is July (~78°F mean) and its coldest is January (~27°F). Rainfall peaks in May (4.5 inches) and bottoms out in January (1.9 inches).

MonthMean tempPrecipRainy days
January27°1.9″14
February31°2.1″12
March42°3.4″16
April54°4.1″16
May64°4.5″17
June73°4.3″15
July78°2.9″14
August78°2.5″13
September71°2.9″12
October58°3.0″11
November43°3.4″12
December31°2.7″13

Frequently asked

When does it freeze in Leland Grove?
In Leland Grove, expect the last spring frost near mid-April; Leland Grove's first autumn frost comes around mid-November.
What is the rainy season in Leland Grove?
Leland Grove sees its heaviest rain in May (around 4.5 inches), part of roughly 38 inches a year.
What is the warmest month in Leland Grove?
The warmest stretch in Leland Grove comes in July, around 78°F on average.
What is the coldest month in Leland Grove?
On average January is the chilliest month in Leland Grove, about 27°F.
When can I start a vegetable garden in Leland Grove?
Leland Grove's last frost (mid-April) cues hardy greens; in Leland Grove, hold heat-lovers two weeks past.
How many rainy days does Leland Grove get?
Leland Grove averages about 165 days with measurable rain or snow each year.
What hardiness zone is Leland Grove?
Leland Grove's USDA zone comes from its January mean (27°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Leland Grove?
Leland Grove'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 Leland Grove?
See this week's day-by-day rain chances for Leland Grove in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Leland Grove?
Current conditions for Leland Grove and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Leland Grove forecast updated?
The Leland Grove forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Leland Grove?
Today's sunrise and sunset times for Leland Grove 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 Leland Grove?
The next few days in Leland Grove's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Leland Grove, Illinois has a humid subtropical climate: January averages roughly 27°F, July about 78°F, 51°F between them.

Yearly precipitation in Leland Grove totals around 38 inches, spread over about 165 days of rain or snow.

At 39.8°N, Leland Grove's 51°F summer-to-winter swing sets when Leland Grove's gardens wake and when frost returns.

All cities in Illinois →

Springfield, IL weather →

ZIP codes in Leland Grove

  • 62704

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.