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As of 12:13 CDT

Weather in Colchester, IL

61°Current weather

Colchester, Sunday, 18 October, 12:13

Clear. Feels like 59°. High 62°, low 39°.

Pressure30.45 inHg
Wind12.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point44°
Mon, 1966° / 39°0Partly cloudy
66 °Partly cloudy

Colchester, Monday, 19 October

Partly cloudy. High 66°, low 39°.

Pressure30.39 inHg
Wind4.5 mph S
Humidity55%
Visibility6.2 mi
Dew point45°
Tue, 2067° / 42°0Clear
67 °Clear

Colchester, Tuesday, 20 October

Clear. High 67°, low 42°.

Pressure30.36 inHg
Wind4.5 mph SE
Humidity52%
Visibility6.2 mi
Dew point46°
Wed, 2169° / 45°0Clear
69 °Clear

Colchester, Wednesday, 21 October

Clear. High 69°, low 45°.

Pressure30.27 inHg
Wind3.7 mph S
Humidity53%
Visibility6.2 mi
Dew point49°
Thu, 2269° / 49°0Clear
69 °Clear

Colchester, Thursday, 22 October

Clear. High 69°, low 49°.

Pressure30.30 inHg
Wind3.6 mph E
Humidity57%
Visibility6.2 mi
Dew point51°
Fri, 2368° / 49°0Clear
68 °Clear

Colchester, Friday, 23 October

Clear. High 68°, low 49°.

Pressure30.30 inHg
Wind8.7 mph SE
Humidity53%
Visibility—
Dew point46°
Sat, 2478° / 56°0Overcast
78 °Overcast

Colchester, Saturday, 24 October

Overcast. High 78°, low 56°.

Pressure30.21 inHg
Wind14.1 mph S
Humidity34%
Visibility—
Dew point42°
Sun, 2560° / 52°0.11Light rain
60 °Light rain

Colchester, Sunday, 25 October

Light rain. High 60°, low 52°.

Pressure30.45 inHg
Wind11.7 mph N
Humidity50%
Visibility—
Dew point38°
Mon, 2667° / 52°0.01Light rain
67 °Light rain

Colchester, Monday, 26 October

Light rain. High 67°, low 52°.

Pressure30.27 inHg
Wind7.2 mph NE
Humidity65%
Visibility—
Dew point48°
Tue, 2769° / 56°0Overcast
69 °Overcast

Colchester, Tuesday, 27 October

Overcast. High 69°, low 56°.

Pressure30.21 inHg
Wind6.8 mph SE
Humidity42%
Visibility—
Dew point41°
Wed, 2871° / 58°0.02Light rain
71 °Light rain

Colchester, Wednesday, 28 October

Light rain. High 71°, low 58°.

Pressure29.91 inHg
Wind11.4 mph SW
Humidity69%
Visibility—
Dew point54°
Thu, 2975° / 58°0.09Light rain
75 °Light rain

Colchester, Thursday, 29 October

Light rain. High 75°, low 58°.

Pressure29.77 inHg
Wind7.9 mph S
Humidity59%
Visibility—
Dew point55°
Fri, 3076° / 56°0.43Rain
76 °Rain

Colchester, Friday, 30 October

Rain. High 76°, low 56°.

Pressure29.65 inHg
Wind17.4 mph SE
Humidity56%
Visibility—
Dew point56°
Sat, 3166° / 46°0.09Light rain
66 °Light rain

Colchester, Saturday, 31 October

Light rain. High 66°, low 46°.

Pressure29.77 inHg
Wind22.3 mph W
Humidity42%
Visibility—
Dew point28°
Sun, 0151° / 37°0Clear
51 °Clear

Colchester, Sunday, 1 November

Clear. High 51°, low 37°.

Pressure30.24 inHg
Wind17.3 mph W
Humidity47%
Visibility—
Dew point27°
Mon, 0260° / 38°0Partly cloudy
60 °Partly cloudy

Colchester, Monday, 2 November

Partly cloudy. High 60°, low 38°.

Pressure30.36 inHg
Wind12.1 mph SE
Humidity34%
Visibility—
Dew point27°

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.