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As of 05:57 CDT

Weather in Petersville, IL

67°Current weather

Petersville, Sunday, 9 August, 05:57

Overcast. Feels like 67°. High 92°, low 67°.

Pressure29.94 inHg
Wind6.6 mph S
Humidity91%
Visibility6.2 mi
Dew point64°
Mon, 1089° / 71°0.01Light rain
89 °Light rain

Petersville, Monday, 10 August

Light rain. High 89°, low 71°.

Pressure29.88 inHg
Wind1.7 mph N
Humidity63%
Visibility6.2 mi
Dew point71°
Tue, 1190° / 71°0Light rain
90 °Light rain

Petersville, Tuesday, 11 August

Light rain. High 90°, low 71°.

Pressure29.77 inHg
Wind10.5 mph SW
Humidity67%
Visibility6.2 mi
Dew point72°
Wed, 1283° / 70°0.16Rain
83 °Rain

Petersville, Wednesday, 12 August

Rain. High 83°, low 70°.

Pressure29.83 inHg
Wind6.1 mph NE
Humidity68%
Visibility6.2 mi
Dew point72°
Thu, 1377° / 63°0.07Light rain
77 °Light rain

Petersville, Thursday, 13 August

Light rain. High 77°, low 63°.

Pressure29.97 inHg
Wind12.1 mph NE
Humidity64%
Visibility—
Dew point62°
Fri, 1472° / 62°1.92Heavy rain
72 °Heavy rain

Petersville, Friday, 14 August

Heavy rain. High 72°, low 62°.

Pressure30.15 inHg
Wind12.6 mph E
Humidity69%
Visibility—
Dew point58°
Sat, 1572° / 61°0.07Light rain
72 °Light rain

Petersville, Saturday, 15 August

Light rain. High 72°, low 61°.

Pressure30.18 inHg
Wind12.5 mph E
Humidity84%
Visibility—
Dew point62°
Sun, 1679° / 66°0.02Light rain
79 °Light rain

Petersville, Sunday, 16 August

Light rain. High 79°, low 66°.

Pressure30.09 inHg
Wind6.3 mph NW
Humidity82%
Visibility—
Dew point69°
Mon, 1782° / 65°0Overcast
82 °Overcast

Petersville, Monday, 17 August

Overcast. High 82°, low 65°.

Pressure30.09 inHg
Wind5.5 mph E
Humidity66%
Visibility—
Dew point66°
Tue, 1884° / 66°0Overcast
84 °Overcast

Petersville, Tuesday, 18 August

Overcast. High 84°, low 66°.

Pressure29.97 inHg
Wind12.2 mph S
Humidity65%
Visibility—
Dew point67°
Wed, 1992° / 72°0Overcast
92 °Overcast

Petersville, Wednesday, 19 August

Overcast. High 92°, low 72°.

Pressure29.80 inHg
Wind13.5 mph S
Humidity58%
Visibility—
Dew point71°
Thu, 2089° / 76°0Overcast
89 °Overcast

Petersville, Thursday, 20 August

Overcast. High 89°, low 76°.

Pressure29.77 inHg
Wind8.7 mph N
Humidity55%
Visibility—
Dew point69°
Fri, 2187° / 74°0Overcast
87 °Overcast

Petersville, Friday, 21 August

Overcast. High 87°, low 74°.

Pressure29.91 inHg
Wind10.7 mph NE
Humidity60%
Visibility—
Dew point69°
Sat, 2297° / 71°0Clear
97 °Clear

Petersville, Saturday, 22 August

Clear. High 97°, low 71°.

Pressure29.80 inHg
Wind15.3 mph SE
Humidity48%
Visibility—
Dew point68°
Sun, 2394° / 80°0.02Light rain
94 °Light rain

Petersville, Sunday, 23 August

Light rain. High 94°, low 80°.

Pressure29.83 inHg
Wind21.4 mph SW
Humidity64%
Visibility—
Dew point72°
Mon, 2486° / 69°0.2Light rain
86 °Light rain

Petersville, Monday, 24 August

Light rain. High 86°, low 69°.

Pressure30.00 inHg
Wind13.2 mph NE
Humidity67%
Visibility—
Dew point70°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Petersville, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Petersville, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.