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As of 16:28 CDT

Weather in Lake Petersburg, IL

88°Current weather

Lake Petersburg, Sunday, 9 August, 16:28

Overcast. Feels like 88°. High 89°, low 70°.

Pressure29.85 inHg
Wind15.1 mph S
Humidity39%
Visibility6.2 mi
Dew point64°

Two-week outlook for Lake Petersburg, IL: week one averages a high of 93.6° and week two 92.3°, so week two runs 1.3° cooler than week one. Around 1.1 inches of precipitation are expected over the 14 days, across 5 wet days. The nearest weekend, August 9: 89°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)93.6°72.4°1.0 in / 4 d—
2nd (August 16 – August 22)92.3°69.3°0.1 in / 1 d—

Weekend weather

Sun, August 9
Partly cloudy
89°70°
no precip.
Sat, August 15
Light rain
102°73°
0.04 in
Sun, August 16
Mostly clear
90°71°
no precip.
Sat, August 22
Clear
88°60°
no precip.
Mon, 1097° / 75°0Overcast
97 °Overcast

Lake Petersburg, Monday, 10 August

Overcast. High 97°, low 75°.

Pressure29.91 inHg
Wind11.4 mph W
Humidity44%
Visibility6.2 mi
Dew point68°
Tue, 11101° / 77°0.07Light rain
101 °Light rain

Lake Petersburg, Tuesday, 11 August

Light rain. High 101°, low 77°.

Pressure29.83 inHg
Wind14.7 mph SW
Humidity41%
Visibility6.2 mi
Dew point68°
Wed, 1291° / 71°0.72Rain
91 °Rain

Lake Petersburg, Wednesday, 12 August

Rain. High 91°, low 71°.

Pressure29.85 inHg
Wind7.4 mph E
Humidity55%
Visibility6.2 mi
Dew point70°
Thu, 1384° / 69°0.13Light rain
84 °Light rain

Lake Petersburg, Thursday, 13 August

Light rain. High 84°, low 69°.

Pressure29.91 inHg
Wind9.5 mph S
Humidity73%
Visibility6.2 mi
Dew point73°
Fri, 1492° / 71°0.03Light rain
92 °Light rain

Lake Petersburg, Friday, 14 August

Light rain. High 92°, low 71°.

Pressure29.94 inHg
Wind13 mph E
Humidity63%
Visibility—
Dew point71°
Sat, 15102° / 73°0.04Light rain
102 °Light rain

Lake Petersburg, Saturday, 15 August

Light rain. High 102°, low 73°.

Pressure29.91 inHg
Wind15.9 mph S
Humidity29%
Visibility—
Dew point58°
Sun, 1690° / 71°0Mostly clear
90 °Mostly clear

Lake Petersburg, Sunday, 16 August

Mostly clear. High 90°, low 71°.

Pressure29.97 inHg
Wind17.4 mph SW
Humidity52%
Visibility—
Dew point65°
Mon, 1789° / 65°0.04Light rain
89 °Light rain

Lake Petersburg, Monday, 17 August

Light rain. High 89°, low 65°.

Pressure29.94 inHg
Wind18.9 mph S
Humidity55%
Visibility—
Dew point66°
Tue, 1896° / 76°0.02Light rain
96 °Light rain

Lake Petersburg, Tuesday, 18 August

Light rain. High 96°, low 76°.

Pressure29.88 inHg
Wind18.3 mph S
Humidity44%
Visibility—
Dew point66°
Wed, 1990° / 72°0.03Light rain
90 °Light rain

Lake Petersburg, Wednesday, 19 August

Light rain. High 90°, low 72°.

Pressure30.00 inHg
Wind8.5 mph S
Humidity45%
Visibility—
Dew point64°
Thu, 2097° / 71°0.05Light rain
97 °Light rain

Lake Petersburg, Thursday, 20 August

Light rain. High 97°, low 71°.

Pressure29.80 inHg
Wind9.4 mph W
Humidity44%
Visibility—
Dew point66°
Fri, 2195° / 70°0.01Light rain
95 °Light rain

Lake Petersburg, Friday, 21 August

Light rain. High 95°, low 70°.

Pressure29.83 inHg
Wind15.2 mph N
Humidity45%
Visibility—
Dew point65°
Sat, 2288° / 60°0Clear
88 °Clear

Lake Petersburg, Saturday, 22 August

Clear. High 88°, low 60°.

Pressure29.97 inHg
Wind8.7 mph NE
Humidity46%
Visibility—
Dew point59°

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 Lake 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.