Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Nor’easter intensifying with howling winds, heavy rain. Click for details. Chevron right
Hurricane Nolo to unleash feet of rain in Hawaii. Click for the forecast. Chevron right

Petersburg, IL

59°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Petersburg

Illinois

59°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Petersburg, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly

10-Day

 Radar MinuteCast® Monthly Air Quality Health & Activities

Unlock extended 90-day forecasts

Activate Your Premium+ Subscription

Chevron right

September 26 - October 10

Sat 9/26

73° /56°
55%
A thick cloud cover with a passing shower

RealFeel®73°

RealFeel Shade™71°

Max UV Index2.0 (Low)

WindE 6 mph

Total Hours of Precipitation1

Total Hours of Rain1

Sun 9/27

78° /51°
13%
Considerable cloudiness in the morning, then intervals of clouds and sunshine in the afternoon

RealFeel®81°

RealFeel Shade™75°

Max UV Index4.0 (Moderate)

WindENE 5 mph

Mon 9/28

76° /51°
12%
Nice with plenty of sunshine

RealFeel®81°

RealFeel Shade™74°

Max UV Index5.0 (Moderate)

WindENE 5 mph

Tue 9/29

81° /63°
18%
Times of clouds and sun

RealFeel®82°

RealFeel Shade™78°

Max UV Index4.0 (Moderate)

WindSSW 7 mph

Wed 9/30

79° /66°
25%
Clouds followed by a brightening sky and humid

RealFeel®83°

RealFeel Shade™78°

Max UV Index4.0 (Moderate)

WindSSE 6 mph

Thu 10/1

82° /65°
94%
Humid with periods of rain and a thunderstorm

RealFeel®82°

RealFeel Shade™82°

Max UV Index1.0 (Low)

WindS 8 mph

Total Hours of Precipitation8.5

Total Hours of Rain8.5

Fri 10/2

78° /62°
73%
Not as warm but humid with rain and a thunderstorm

RealFeel®81°

RealFeel Shade™81°

Max UV Index1.0 (Low)

WindE 6 mph

Total Hours of Precipitation12

Total Hours of Rain12

Sat 10/3

77° /57°
79%
Considerable clouds and humid with rain and a thunderstorm, then a leftover shower

RealFeel®85°

RealFeel Shade™82°

Max UV Index3.0 (Moderate)

WindSSW 8 mph

Total Hours of Precipitation5

Total Hours of Rain5

Sun 10/4

74° /49°
19%
Mostly cloudy and less humid

RealFeel®73°

RealFeel Shade™71°

Max UV Index2.0 (Low)

WindNW 7 mph

Mon 10/5

70° /48°
1%
Sunshine and a few clouds

RealFeel®71°

RealFeel Shade™67°

Max UV Index4.0 (Moderate)

WindNNW 10 mph

Tue 10/6

72° /50°
0%
Plenty of sun

RealFeel®77°

RealFeel Shade™71°

Max UV Index4.0 (Moderate)

WindW 1 mph

Wed 10/7

73° /48°
1%
Sun breaking through clouds at times

RealFeel®75°

RealFeel Shade™72°

Max UV Index3.0 (Moderate)

WindWSW 6 mph

Thu 10/8

72° /50°
0%
Partly sunny

RealFeel®72°

RealFeel Shade™69°

Max UV Index4.0 (Moderate)

WindWNW 8 mph

Fri 10/9

75° /49°
20%
Plenty of sunshine

RealFeel®79°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindWSW 9 mph

Sat 10/10

73° /51°
5%
Sunshine

RealFeel®73°

RealFeel Shade™70°

Max UV Index4.0 (Moderate)

WindWNW 9 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Nor'easter to howl at coast with damaging storm surge, power outages

8 hours ago

Weather News

Nor'easter intensifies as coast braces for flooding, damaging waves

12 hours ago

Hurricane

Hurricane Nolo to become a Cat 3; Hawaii bracing for historic deluge

7 hours ago

Weather News

Nor’easter damages Outer Banks roads, causes flooding in Virginia

12 hours ago

Hurricane

Hurricane Polo to send tropical downpours into New Mexico, Texas

10 hours ago

 More Stories

Featured Stories

Climate

Water Demand: The double-edged sword of data centers

2 days ago

Astronomy

NASA marks Hubble’s 200,000th orbit around Earth with a stunning image

1 day ago

Hurricane

Category 5 Hurricane Polo strengthens to 2nd strongest on record

2 days ago

Astronomy

Harvest Moon 2026: When to see September’s full moon

21 hours ago

Recreation

Hiker dies in fall on Washington trail a day after hiker found dead

1 day ago
World North America United States Illinois Petersburg

Weather Near Petersburg:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...