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As of 02:58 CDT

Weather in Colchester, IL

39°Current weather

Colchester, Sunday, 18 October, 02:58

Clear. Feels like 33°. High 63°, low 39°.

Pressure30.45 inHg
Wind8.1 mph S
Humidity85%
Visibility6.2 mi
Dew point35°
Mon, 1965° / 42°0Partly cloudy
65 °Partly cloudy

Colchester, Monday, 19 October

Partly cloudy. High 65°, low 42°.

Pressure30.39 inHg
Wind4.1 mph S
Humidity54%
Visibility6.2 mi
Dew point45°
Tue, 2067° / 43°0Overcast
67 °Overcast

Colchester, Tuesday, 20 October

Overcast. High 67°, low 43°.

Pressure30.39 inHg
Wind4.7 mph SE
Humidity50%
Visibility6.2 mi
Dew point45°
Wed, 2170° / 45°0Clear
70 °Clear

Colchester, Wednesday, 21 October

Clear. High 70°, low 45°.

Pressure30.27 inHg
Wind3.9 mph S
Humidity53%
Visibility6.2 mi
Dew point48°
Thu, 2270° / 48°0Clear
70 °Clear

Colchester, Thursday, 22 October

Clear. High 70°, low 48°.

Pressure30.24 inHg
Wind6 mph E
Humidity47%
Visibility—
Dew point46°
Fri, 2373° / 51°0Mostly clear
73 °Mostly clear

Colchester, Friday, 23 October

Mostly clear. High 73°, low 51°.

Pressure30.27 inHg
Wind10.4 mph SE
Humidity47%
Visibility—
Dew point46°
Sat, 2477° / 57°0Overcast
77 °Overcast

Colchester, Saturday, 24 October

Overcast. High 77°, low 57°.

Pressure30.18 inHg
Wind15.1 mph S
Humidity32%
Visibility—
Dew point40°
Sun, 2560° / 43°0Overcast
60 °Overcast

Colchester, Sunday, 25 October

Overcast. High 60°, low 43°.

Pressure30.47 inHg
Wind12.5 mph NW
Humidity57%
Visibility—
Dew point35°
Mon, 2657° / 38°0Overcast
57 °Overcast

Colchester, Monday, 26 October

Overcast. High 57°, low 38°.

Pressure30.42 inHg
Wind6 mph N
Humidity32%
Visibility—
Dew point24°
Tue, 2766° / 42°0Overcast
66 °Overcast

Colchester, Tuesday, 27 October

Overcast. High 66°, low 42°.

Pressure30.27 inHg
Wind10.8 mph S
Humidity37%
Visibility—
Dew point32°
Wed, 2867° / 55°0.03Light rain
67 °Light rain

Colchester, Wednesday, 28 October

Light rain. High 67°, low 55°.

Pressure30.06 inHg
Wind16.6 mph S
Humidity62%
Visibility—
Dew point48°
Thu, 2969° / 61°0.24Light rain
69 °Light rain

Colchester, Thursday, 29 October

Light rain. High 69°, low 61°.

Pressure29.80 inHg
Wind18.3 mph S
Humidity54%
Visibility—
Dew point50°
Fri, 3070° / 57°0.11Light rain
70 °Light rain

Colchester, Friday, 30 October

Light rain. High 70°, low 57°.

Pressure29.94 inHg
Wind12.6 mph SW
Humidity36%
Visibility—
Dew point39°
Sat, 3169° / 56°0.09Light rain
69 °Light rain

Colchester, Saturday, 31 October

Light rain. High 69°, low 56°.

Pressure29.94 inHg
Wind15.8 mph SE
Humidity61%
Visibility—
Dew point54°
Sun, 0166° / 53°0.02Light rain
66 °Light rain

Colchester, Sunday, 1 November

Light rain. High 66°, low 53°.

Pressure29.94 inHg
Wind15.8 mph W
Humidity31%
Visibility—
Dew point32°
Mon, 0268° / 49°0Clear
68 °Clear

Colchester, Monday, 2 November

Clear. High 68°, low 49°.

Pressure30.03 inHg
Wind13.7 mph S
Humidity30%
Visibility—
Dew point33°

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.