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As of 11:51 CDT

Weather in Petersburg, IL

86°Current weather

Petersburg, Sunday, 9 August, 11:51

Mostly clear. Feels like 85°. High 91°, low 70°.

Pressure29.97 inHg
Wind13.6 mph S
Humidity39%
Visibility6.2 mi
Dew point58°

Two-week outlook for Petersburg, IL: week one averages a high of 88.2° and week two 83°, so week two runs 5.2° cooler than week one. Around 3.5 inches of precipitation are expected over the 14 days, across 5 wet days. The nearest weekend, August 9: 91°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)88.2°70.5°3.5 in / 5 d—
2nd (August 16 – August 22)83°63.9°0.0 in / 0 d—

Weekend weather

Sun, August 9
Mostly clear
91°70°
no precip.
Sat, August 15
Light rain
85°67°
0.08 in
Sun, August 16
Overcast
82°67°
no precip.
Sat, August 22
Clear
88°67°
no precip.
Mon, 1096° / 78°0Overcast
96 °Overcast

Petersburg, Monday, 10 August

Overcast. High 96°, low 78°.

Pressure29.91 inHg
Wind11 mph SW
Humidity46%
Visibility6.2 mi
Dew point68°
Tue, 1197° / 72°0.26Rain
97 °Rain

Petersburg, Tuesday, 11 August

Rain. High 97°, low 72°.

Pressure29.85 inHg
Wind15.9 mph SW
Humidity52%
Visibility6.2 mi
Dew point70°
Wed, 1292° / 71°0.18Rain
92 °Rain

Petersburg, Wednesday, 12 August

Rain. High 92°, low 71°.

Pressure29.83 inHg
Wind3.9 mph NE
Humidity58%
Visibility6.2 mi
Dew point71°
Thu, 1379° / 69°2.46Heavy rain
79 °Heavy rain

Petersburg, Thursday, 13 August

Heavy rain. High 79°, low 69°.

Pressure29.88 inHg
Wind15.7 mph E
Humidity80%
Visibility—
Dew point71°
Fri, 1476° / 67°0.51Rain
76 °Rain

Petersburg, Friday, 14 August

Rain. High 76°, low 67°.

Pressure30.06 inHg
Wind13.4 mph E
Humidity86%
Visibility—
Dew point68°
Sat, 1585° / 67°0.08Light rain
85 °Light rain

Petersburg, Saturday, 15 August

Light rain. High 85°, low 67°.

Pressure30.09 inHg
Wind14.3 mph SE
Humidity77%
Visibility—
Dew point70°
Sun, 1682° / 67°0Overcast
82 °Overcast

Petersburg, Sunday, 16 August

Overcast. High 82°, low 67°.

Pressure30.03 inHg
Wind13.6 mph NW
Humidity78%
Visibility—
Dew point72°
Mon, 1778° / 61°0Partly cloudy
78 °Partly cloudy

Petersburg, Monday, 17 August

Partly cloudy. High 78°, low 61°.

Pressure30.09 inHg
Wind7.8 mph NE
Humidity62%
Visibility—
Dew point60°
Tue, 1885° / 63°0Overcast
85 °Overcast

Petersburg, Tuesday, 18 August

Overcast. High 85°, low 63°.

Pressure29.85 inHg
Wind13 mph S
Humidity66%
Visibility—
Dew point67°
Wed, 1982° / 66°0Partly cloudy
82 °Partly cloudy

Petersburg, Wednesday, 19 August

Partly cloudy. High 82°, low 66°.

Pressure29.85 inHg
Wind12.4 mph NW
Humidity56%
Visibility—
Dew point63°
Thu, 2080° / 61°0Mostly clear
80 °Mostly clear

Petersburg, Thursday, 20 August

Mostly clear. High 80°, low 61°.

Pressure29.97 inHg
Wind5.7 mph N
Humidity60%
Visibility—
Dew point61°
Fri, 2186° / 63°0Partly cloudy
86 °Partly cloudy

Petersburg, Friday, 21 August

Partly cloudy. High 86°, low 63°.

Pressure29.83 inHg
Wind15.1 mph S
Humidity55%
Visibility—
Dew point63°
Sat, 2288° / 67°0Clear
88 °Clear

Petersburg, Saturday, 22 August

Clear. High 88°, low 67°.

Pressure29.83 inHg
Wind13.8 mph NW
Humidity48%
Visibility—
Dew point63°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Petersburg, IL, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.