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

South Wilmington, Illinois Weather

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

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

South Wilmington, IL
Saturday, July 4 at 1:00 PM
83
°
Overcast
Feels like
92°
Humidity
76%
Wind
7 mph
Sunrise
12:26 AM
Sunset
3:29 PM
South Wilmington, IL
Hour by hour · 24h
24-Hour ForecastSouth Wilmington, IL: 24-hour forecast. Temperatures range from 68 to 83 degrees Fahrenheit with a 73% chance of precipitation at 5 PM.
L 68°H 83°
South Wilmington, IL
7-day forecast
  1. Today
    Jul 4
    Heavy Rain
    73%
    1.0″
    83°71°
  2. Sunday
    Jul 5
    Foggy
    21%
    80°68°-3°
  3. Monday
    Jul 6
    Overcast
    78°63°-2°
  4. Tuesday
    Jul 7
    Overcast
    80°58°+2°
  5. Wednesday
    Jul 8
    Light Drizzle
    82°62°+2°
  6. Thursday
    Jul 9
    T-storm w/ Hail
    47%
    81°69°-1°
  7. Friday
    Jul 10
    Drizzle
    41%
    0.01″
    80°68°-1°
South Wilmington, IL
Anemometer · 24h winds · from true
NESW
From · True
S
184° · backing 61°
Direction
S
184°
Sustained
7
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 @ 12:00a
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 2710SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
South Wilmington, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
994.0
+0.3 mb in 3h · steady · 29.35 inHg
Now
994.0
mb
3h
+0.3
mb
12h
-0.7
mb
24h
-1.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 993996
9859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW996.1993.2994.0
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
South Wilmington, IL
Air quality
30
AQI
Good
-3 in 6hPeak ~45 @ 11 PM

AQI 30 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 50. Overcast through the UV peak window (cloud cover ~98%) — afternoon ozone should stay flat.

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

PM 2.5Good
7.6μg/m³
PM 10Good
9μg/m³
NO₂Good
2μg/m³
OzoneDRIVERUnhealthy SG
106μg/m³
UV IndexHigh
6.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 50. Overcast through the UV peak window (cloud cover ~98%) — afternoon ozone should stay flat.

Present
AQI 50
UV peak
6.5 at 1 PM
Sky at peak
overcast
Projected peak
AQI 22

PM × Wind × Precip

PM scrubbed by 3 hours of recent rain — PM2.5 down to 7.6 µg/m³, PM10 to 8.6 µg/m³.

PM2.5/PM10
0.88
Wind
light
Recent rain
3h in last 6h
Pattern
washed out
South Wilmington, IL
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow

Visibility
41.8mi
UNLIMITED
74 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
18:00 UTC · South Wilmington, 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
18:00 UTC · South Wilmington, IL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
South Wilmington, IL
Satellite · infrared · animated
South Wilmington, IL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
South Wilmington, IL
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:53 AM
Sunrise
12:26 AM
Daylight
15h 03m
Sunset
3:29 PM
Civil dusk
9:03 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
South Wilmington, IL
The moon
Waning Gibbous
80% illuminated
Moonrise
10:49 PM
Moonset
9:58 AM
In sign
♓︎ Pisces
South Wilmington, IL
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

South Wilmington at a glance

  • Today vs. normal: 13°F above the seasonal normal for this latitude
  • Last frost: April 23 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 60474

16-Day Forecast — South Wilmington

  1. Sat83°71°73%
  2. Sun80°68°21%
  3. Mon78°63°4%
  4. Tue80°58°2%
  5. Wed82°62°5%
  6. Thu81°69°47%
  7. Fri80°68°41%
  8. Sat73°58°15%
  9. Sun74°56°7%
  10. Mon74°57°7%
  11. Tue76°55°10%
  12. Wed78°61°23%
  13. Thu81°62°16%
  14. Fri77°67°21%
  15. Sat80°66°26%
  16. Sun73°59°35%

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 — South Wilmington

SPC has placed South Wilmington in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3TSTMGeneral Thunderstorms

Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.

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.

ZIP codes in South Wilmington

  • 60474

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.