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

Coal Valley, Illinois Weather

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

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

Coal Valley, IL
Saturday, July 4 at 9:54 AM
76
°
Overcast
Feels like
85°
Humidity
88%
Wind
2 mph
Sunrise
12:33 AM
Sunset
3:38 PM
Coal Valley, IL
Hour by hour · 24h
24-Hour ForecastCoal Valley, IL: 24-hour forecast. Temperatures range from 67 to 84 degrees Fahrenheit with a 30% chance of precipitation at 1 PM.
L 67°H 84°
Coal Valley, IL
7-day forecast
  1. Today
    Jul 4
    Overcast
    48%
    —
    84°67°—
  2. Sunday
    Jul 5
    Overcast
    19%
    —
    85°67°+1°
  3. Monday
    Jul 6
    Overcast
    —
    —
    82°63°-3°
  4. Tuesday
    Jul 7
    Mostly Clear
    —
    —
    79°60°-3°
  5. Wednesday
    Jul 8
    Overcast
    10%
    —
    83°62°+4°
  6. Thursday
    Jul 9
    Thunderstorm
    36%
    —
    81°67°-2°
  7. Friday
    Jul 10
    Overcast
    24%
    —
    79°65°-2°
Coal Valley, IL
Next 24 hours · Mild now
64°76°88°6a12p6p12anow 74°high 84°low 67°PRECIP %
Coal Valley, IL
Anemometer · 24h winds · from true
NESW
From · True
SSE
151° · backing 58°
Direction
SSE
151°
Sustained
2
mph
Gust
4
mph
Peak 24h
19
avg 6
Beaufort · 1 · LIGHT AIR
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 6 · pk 19 @ 4:00p
010MPHB1B2B3B4-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 117SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Coal Valley, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
989.1
-0.1 mb in 3h · steady · 29.21 inHg
Now
989.1
mb
3h
-0.1
mb
12h
0.0
mb
24h
-2.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 987–992
9809859909951000STORM|RAIN-21h-18h-15h-12h-9h-6h-3h-24hNOW992.4987.4989.2
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Coal Valley, IL
Air quality
26
AQI
Good
→0 in 6h▲Peak ~38 @ 9 PM

AQI 26 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~80%) — afternoon ozone should stay flat.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.

PM 2.5Good
5.2μg/m³
PM 10Good
6μg/m³
NO₂Good
7μg/m³
OzoneDRIVERModerate
66μg/m³
UV IndexLow
1.4

What's driving it

Ozone × UV × Sky

Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~80%) — afternoon ozone should stay flat.

Present
AQI 31
UV peak
2.8 at 1 PM
Sky at peak
overcast
Projected peak
AQI 6

PM × Wind × Precip

PM2.5 at 5.2 µg/m³ (AQI 29) with a 0.83 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.83
Wind
calm
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/m³300
Coal Valley, IL
Sky cover · visibility · 24h
Cloud cover
95%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
30.8mi
UNLIMITED
55 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
14:54 UTC · Coal Valley, 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
14:54 UTC · Coal Valley, IL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Coal Valley, IL
Satellite · infrared · animated
Coal Valley, IL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Coal Valley, IL
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:00 AM
Sunrise
12:33 AM
Daylight
15h 05m
Sunset
3:38 PM
Civil dusk
9:13 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Coal Valley, IL
The moon
Waning Gibbous
81% illuminated
Moonrise
10:58 PM
Moonset
10:06 AM
In sign
♓︎ Pisces
Coal Valley, IL
Microseason
Jul 1–5

Cicadas claim the afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Coal Valley at a glance

  • Today vs. normal: 6°F above the seasonal normal for this latitude
  • Last frost: April 25 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 61240

16-Day Forecast — Coal Valley

  1. Sat84°67°48%
  2. Sun85°67°19%
  3. Mon82°63°2%
  4. Tue79°60°1%
  5. Wed83°62°10%
  6. Thu81°67°36%
  7. Fri79°65°24%
  8. Sat84°65°16%
  9. Sun68°59°9%
  10. Mon74°55°8%
  11. Tue76°60°7%
  12. Wed80°65°15%
  13. Thu81°66°19%
  14. Fri82°68°20%
  15. Sat85°70°23%
  16. Sun85°71°29%

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 — Coal Valley

SPC has placed Coal Valley in the Marginal Risk category for severe thunderstorms today.

  • TODAYMRGLMarginal Risk
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3NONENo severe risk

Isolated severe storms possible. Limited threat for hail or damaging wind.

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: Winter settles deep on the plains.January 6–10: Arctic cold grips the heartland.January 11–15: Sunlight returns to the sloped terrain.January 16–20: Ring-necked pheasants call from cover.January 21–25: Deepest cold locks the prairie.January 26–31: Deep winter's pivot point.February 1–5: February's first breath.February 6–10: Subtle shifts in the light.February 11–15: Bald eagles concentrate on open water.February 16–20: Cold rebound before the final thaw.February 21–25: First killdeer return to thawed fields.February 26–28: Winter's veil grows thin.March 1–5: Ice withdraws from the land.March 6–10: Hibernators wake to open air.March 11–15: Spring arrives with fury and grace.March 16–20: Sandhill Cranes Rise from the Platte.March 21–25: Equinox — Night and Day Hold Balance.March 26–31: First Green Breaks Through Brown Earth.April 1–5: Thunder Voices Wake the Prairie.April 6–10: Cliff Swallows Return to Mud Nests.April 11–15: Wild Geese Wing North in Massive Flocks.April 16–20: Rainbows Follow Afternoon Storms.April 21–25: Prairie Sedges Push Through Wet Soil.April 26–30: Last Frost Retreats North.May 1–5: Wildflowers Erupt Across the Prairie.May 6–10: Grain Rains Feed the Growing Fields.May 11–15: Seedlings Rise From Frost-Free Soil.May 16–20: Roses Bloom Along the Shelter Rows.May 21–25: Summer Arrives Early in Wind and Heat.May 26–31: Frogs Begin Their Nightly Chorus.June 1–5: Prairie lightning bugs rise.June 6–10: Earthworms surface after rain.June 11–15: Toward the solstice glow.June 16–20: Lesser ripening, greater heat.June 21–25: Solstice—sun at zenith.June 26–30: Fireflies in the darkening oak.July 1–5: Cicadas claim the afternoon.July 6–10: Warm wind sweeps the tallgrass.July 11–15: Thunder builds every afternoon.July 16–20: Corn tassels and reaches peak.July 21–25: Dog days settle in haze.July 26–31: Katydid chorus erupts at dusk.August 1–5: Great rains sometimes fall.August 6–10: Autumn's edge approaches.August 11–15: Cool wind rises from the north.August 16–20: Late summer wind through tallgrass.August 21–25: Dew settles on the tallgrass.August 26–31: Monarchs gather on prairie.September 1–5: Corn tassels and heavy skies.September 6–10: Purple asters rise on the prairie.September 11–15: Hawks ride thermal currents south.September 16–20: Equinox brings balance to day.September 21–25: Thunder stills across the plains.September 26–30: Snow geese wheel through the flyway.October 1–5: Prairie enters dormancy slowly.October 6–10: Geese gather on autumn waters.October 11–15: First widespread freeze arrives.October 16–20: Oaks turn bronze and russet.October 21–25: Frost deepens through the night.October 26–31: Light rains fall on frozen ground.November 1–5: Tallgrass turns gold.November 6–10: North wind strips the oak.November 11–15: Frost locks the prairie.November 16–20: Open sky grows cold.November 21–25: First snow falls soft.November 26–30: Blizzard drives the herds.December 1–5: Deep winter takes hold.December 6–10: Sky closes cold, winter reigns.December 11–15: Darkness deepens, life retreats.December 16–20: Rivers turn to stone.December 21–25: Solstice — 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

Millions of periodical and annual cicadas emerge, their droning chorus filling the summer heat; the soundtrack of midsummer settles over prairie and wetland.

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

July is Coal Valley's warmest stretch (~76°F) and January its coldest (~23°F); precipitation crests in June at 5.0 inches and ebbs in January to 1.7 inches.

MonthMean tempPrecipRainy days
January23°1.7″5
February28°1.8″5
March40°2.6″6
April51°3.8″7
May63°4.7″8
June72°5.0″8
July76°4.2″6
August73°4.0″6
September66°3.3″5
October54°2.8″5
November40°2.3″5
December29°2.0″5

Regional context

In Coal Valley, NOAA NCEI 1991-2020 normals put January near 23°F and July near 76°F — a 52°F seasonal arc — with about 38.3 inches of precipitation over 69 rainy or snowy days.

Coal Valley's rain peaks in summer: June brings 5.0 inches over 7.7 thunderstorm-fed days, while January sees just 1.7 inches across 4.5 days under cooler, drier air. That puts Coal Valley in a summer-convective cohort with places like Moline, IL, Silvis, IL and Carbon Cliff, IL.

Once Coal Valley passes mid-April, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Tomatoes and peppers do best set out two weeks later in Coal Valley, once nights clear the mid-40s°F. The season ends by mid-November in Coal Valley, once hard frosts set back in. Coal Valley's low ground holds frost later into spring than Coal Valley's benches, which run 3-5 days ahead.

Similar climates: Moline, IL, Silvis, IL, Carbon Cliff, IL, Colona, IL, Milan, IL.

Frequently asked

When does it freeze in Coal Valley?
Frost typically leaves Coal Valley by mid-April and returns to Coal Valley near mid-November.
What is the rainy season in Coal Valley?
Rainfall in Coal Valley peaks in June near 5.0 inches, out of about 38 inches annually.
What is the warmest month in Coal Valley?
Coal Valley peaks in July, when the mean runs near 76°F.
What is the coldest month in Coal Valley?
January is Coal Valley's coldest month, averaging about 23°F.
When can I start a vegetable garden in Coal Valley?
Hardy spring crops go in near mid-April in Coal Valley; tender peppers and squash wait 10–14 days.
How many rainy days does Coal Valley get?
Expect roughly 69 wet days a year in Coal Valley.
What hardiness zone is Coal Valley?
Since January in Coal Valley averages 23°F, Coal Valley's USDA zone follows that floor — confirm it by ZIP.
What is the 10-day forecast for Coal Valley?
Coal Valley'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 Coal Valley?
See this week's day-by-day rain chances for Coal Valley in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Coal Valley?
Current conditions for Coal Valley and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Coal Valley forecast updated?
The Coal Valley forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Coal Valley?
Today's sunrise and sunset times for Coal Valley 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 Coal Valley?
The next few days in Coal Valley's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Coal Valley, Illinois, the warm-summer humid continental climate runs from about 23°F in January to 76°F in July, a 53°F seasonal range.

Across the year, Coal Valley collects about 38 inches of precipitation over roughly 69 days with measurable rain or snow.

From 41.4°N, Coal Valley sees a 53°F seasonal swing that governs Coal Valley's planting and frost windows.

All cities in Illinois →

Davenport, IA weather →

ZIP codes in Coal Valley

  • 61240

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.