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As of 23:45 CDT

Weather in Colchester, IL

69°Current weather

Colchester, Saturday, 8 August, 23:45

Mostly clear. Feels like 70°. High 86°, low 69°.

Pressure30.00 inHg
Wind7.7 mph E
Humidity98%
Visibility6.2 mi
Dew point68°
Sun, 0993° / 69°0Partly cloudy
93 °Partly cloudy

Colchester, Sunday, 9 August

Partly cloudy. High 93°, low 69°.

Pressure29.88 inHg
Wind12.8 mph S
Humidity65%
Visibility6.2 mi
Dew point73°
Mon, 1094° / 73°0Overcast
94 °Overcast

Colchester, Monday, 10 August

Overcast. High 94°, low 73°.

Pressure29.88 inHg
Wind10.1 mph SW
Humidity63%
Visibility6.2 mi
Dew point72°
Tue, 1194° / 78°0Overcast
94 °Overcast

Colchester, Tuesday, 11 August

Overcast. High 94°, low 78°.

Pressure29.80 inHg
Wind8.1 mph SW
Humidity67%
Visibility6.2 mi
Dew point70°
Wed, 1284° / 72°0.18Rain
84 °Rain

Colchester, Wednesday, 12 August

Rain. High 84°, low 72°.

Pressure29.88 inHg
Wind6.7 mph N
Humidity75%
Visibility6.2 mi
Dew point75°
Thu, 1380° / 66°0.3Rain
80 °Rain

Colchester, Thursday, 13 August

Rain. High 80°, low 66°.

Pressure29.88 inHg
Wind14.5 mph E
Humidity67%
Visibility—
Dew point66°
Fri, 1481° / 62°0Overcast
81 °Overcast

Colchester, Friday, 14 August

Overcast. High 81°, low 62°.

Pressure30.09 inHg
Wind12.3 mph E
Humidity63%
Visibility—
Dew point63°
Sat, 1570° / 64°0.1Light rain
70 °Light rain

Colchester, Saturday, 15 August

Light rain. High 70°, low 64°.

Pressure30.21 inHg
Wind18.6 mph E
Humidity73%
Visibility—
Dew point59°
Sun, 1676° / 63°0.02Light rain
76 °Light rain

Colchester, Sunday, 16 August

Light rain. High 76°, low 63°.

Pressure30.12 inHg
Wind10.3 mph E
Humidity79%
Visibility—
Dew point63°
Mon, 1782° / 65°0.02Light rain
82 °Light rain

Colchester, Monday, 17 August

Light rain. High 82°, low 65°.

Pressure30.06 inHg
Wind6 mph E
Humidity69%
Visibility—
Dew point66°
Tue, 1885° / 66°0Overcast
85 °Overcast

Colchester, Tuesday, 18 August

Overcast. High 85°, low 66°.

Pressure30.00 inHg
Wind7.8 mph S
Humidity66%
Visibility—
Dew point67°
Wed, 1977° / 63°0Light rain
77 °Light rain

Colchester, Wednesday, 19 August

Light rain. High 77°, low 63°.

Pressure29.97 inHg
Wind13.8 mph N
Humidity70%
Visibility—
Dew point62°
Thu, 2073° / 55°0Overcast
73 °Overcast

Colchester, Thursday, 20 August

Overcast. High 73°, low 55°.

Pressure30.06 inHg
Wind15.4 mph NE
Humidity52%
Visibility—
Dew point52°
Fri, 2173° / 52°0Overcast
73 °Overcast

Colchester, Friday, 21 August

Overcast. High 73°, low 52°.

Pressure30.03 inHg
Wind10.5 mph SE
Humidity48%
Visibility—
Dew point49°
Sat, 2283° / 61°0.06Light rain
83 °Light rain

Colchester, Saturday, 22 August

Light rain. High 83°, low 61°.

Pressure29.85 inHg
Wind14.4 mph S
Humidity71%
Visibility—
Dew point64°
Sun, 2389° / 66°0Clear
89 °Clear

Colchester, Sunday, 23 August

Clear. High 89°, low 66°.

Pressure29.94 inHg
Wind9.1 mph W
Humidity51%
Visibility—
Dew point63°

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 Colchester, 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 Colchester, 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.