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As of 04:27 CDT

Weather in Brereton, IL

68°Current weather

Brereton, Sunday, 9 August, 04:27

Overcast. Feels like 69°. High 91°, low 68°.

Pressure30.00 inHg
Wind6 mph S
Humidity93%
Visibility6.2 mi
Dew point67°
Mon, 1093° / 75°0Overcast
93 °Overcast

Brereton, Monday, 10 August

Overcast. High 93°, low 75°.

Pressure29.88 inHg
Wind8.4 mph W
Humidity55%
Visibility6.2 mi
Dew point69°
Tue, 1195° / 71°0.03Light rain
95 °Light rain

Brereton, Tuesday, 11 August

Light rain. High 95°, low 71°.

Pressure29.83 inHg
Wind13.3 mph W
Humidity58%
Visibility6.2 mi
Dew point71°
Wed, 1286° / 74°0.25Rain
86 °Rain

Brereton, Wednesday, 12 August

Rain. High 86°, low 74°.

Pressure29.83 inHg
Wind7.3 mph E
Humidity78%
Visibility6.2 mi
Dew point73°
Thu, 1384° / 64°0.07Light rain
84 °Light rain

Brereton, Thursday, 13 August

Light rain. High 84°, low 64°.

Pressure29.97 inHg
Wind13.2 mph NE
Humidity47%
Visibility—
Dew point59°
Fri, 1467° / 61°1.33Heavy rain
67 °Heavy rain

Brereton, Friday, 14 August

Heavy rain. High 67°, low 61°.

Pressure30.15 inHg
Wind12.3 mph NE
Humidity88%
Visibility—
Dew point58°
Sat, 1574° / 60°0.13Light rain
74 °Light rain

Brereton, Saturday, 15 August

Light rain. High 74°, low 60°.

Pressure30.18 inHg
Wind11.5 mph SE
Humidity76%
Visibility—
Dew point64°
Sun, 1681° / 66°0.02Light rain
81 °Light rain

Brereton, Sunday, 16 August

Light rain. High 81°, low 66°.

Pressure30.06 inHg
Wind7.2 mph SE
Humidity70%
Visibility—
Dew point69°
Mon, 1783° / 66°0Overcast
83 °Overcast

Brereton, Monday, 17 August

Overcast. High 83°, low 66°.

Pressure30.06 inHg
Wind5.6 mph NE
Humidity59%
Visibility—
Dew point64°
Tue, 1884° / 66°0Partly cloudy
84 °Partly cloudy

Brereton, Tuesday, 18 August

Partly cloudy. High 84°, low 66°.

Pressure30.00 inHg
Wind11 mph SE
Humidity56%
Visibility—
Dew point64°
Wed, 1999° / 72°0Partly cloudy
99 °Partly cloudy

Brereton, Wednesday, 19 August

Partly cloudy. High 99°, low 72°.

Pressure29.83 inHg
Wind15.4 mph S
Humidity41%
Visibility—
Dew point66°
Thu, 2099° / 78°0Overcast
99 °Overcast

Brereton, Thursday, 20 August

Overcast. High 99°, low 78°.

Pressure29.80 inHg
Wind11.9 mph W
Humidity38%
Visibility—
Dew point65°
Fri, 2192° / 76°0Partly cloudy
92 °Partly cloudy

Brereton, Friday, 21 August

Partly cloudy. High 92°, low 76°.

Pressure29.88 inHg
Wind11.6 mph NE
Humidity59%
Visibility—
Dew point72°
Sat, 22103° / 72°0.05Light rain
103 °Light rain

Brereton, Saturday, 22 August

Light rain. High 103°, low 72°.

Pressure29.83 inHg
Wind15.9 mph S
Humidity34%
Visibility—
Dew point63°
Sun, 2395° / 76°0.04Light rain
95 °Light rain

Brereton, Sunday, 23 August

Light rain. High 95°, low 76°.

Pressure29.83 inHg
Wind15.1 mph W
Humidity47%
Visibility—
Dew point68°
Mon, 2484° / 69°0.14Light rain
84 °Light rain

Brereton, Monday, 24 August

Light rain. High 84°, low 69°.

Pressure30.00 inHg
Wind13.2 mph E
Humidity79%
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 Brereton, 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 Brereton, 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.