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As of 13:46 CDT

Weather in Eureka, IL

56°Current weather

Eureka, Saturday, 17 October, 13:46

Clear. Feels like 54°. High 56°, low 36°.

Pressure30.50 inHg
Wind3.6 mph SW
Humidity55%
Visibility6.2 mi
Dew point40°
Sun, 1862° / 40°0Clear
62 °Clear

Eureka, Sunday, 18 October

Clear. High 62°, low 40°.

Pressure30.45 inHg
Wind11.3 mph S
Humidity49%
Visibility6.2 mi
Dew point39°
Mon, 1965° / 42°0Clear
65 °Clear

Eureka, Monday, 19 October

Clear. High 65°, low 42°.

Pressure30.39 inHg
Wind3.9 mph S
Humidity50%
Visibility6.2 mi
Dew point43°
Tue, 2067° / 44°0Clear
67 °Clear

Eureka, Tuesday, 20 October

Clear. High 67°, low 44°.

Pressure30.36 inHg
Wind4.1 mph SE
Humidity45%
Visibility6.2 mi
Dew point44°
Wed, 2168° / 47°0Mostly clear
68 °Mostly clear

Eureka, Wednesday, 21 October

Mostly clear. High 68°, low 47°.

Pressure30.27 inHg
Wind4.3 mph SW
Humidity53%
Visibility6.2 mi
Dew point47°
Thu, 2270° / 50°0Clear
70 °Clear

Eureka, Thursday, 22 October

Clear. High 70°, low 50°.

Pressure30.27 inHg
Wind6.7 mph E
Humidity48%
Visibility—
Dew point46°
Fri, 2374° / 53°0Clear
74 °Clear

Eureka, Friday, 23 October

Clear. High 74°, low 53°.

Pressure30.15 inHg
Wind9.7 mph S
Humidity34%
Visibility—
Dew point40°
Sat, 2472° / 56°0Overcast
72 °Overcast

Eureka, Saturday, 24 October

Overcast. High 72°, low 56°.

Pressure30.12 inHg
Wind15.8 mph S
Humidity32%
Visibility—
Dew point37°
Sun, 2570° / 54°0Overcast
70 °Overcast

Eureka, Sunday, 25 October

Overcast. High 70°, low 54°.

Pressure30.06 inHg
Wind14.9 mph W
Humidity58%
Visibility—
Dew point53°
Mon, 2667° / 47°0Clear
67 °Clear

Eureka, Monday, 26 October

Clear. High 67°, low 47°.

Pressure30.18 inHg
Wind7.9 mph SE
Humidity43%
Visibility—
Dew point39°
Tue, 2778° / 59°0Overcast
78 °Overcast

Eureka, Tuesday, 27 October

Overcast. High 78°, low 59°.

Pressure30.00 inHg
Wind18.3 mph SW
Humidity32%
Visibility—
Dew point43°
Wed, 2868° / 59°0.16Light rain
68 °Light rain

Eureka, Wednesday, 28 October

Light rain. High 68°, low 59°.

Pressure29.94 inHg
Wind19.2 mph S
Humidity76%
Visibility—
Dew point53°
Thu, 2964° / 49°0.05Light rain
64 °Light rain

Eureka, Thursday, 29 October

Light rain. High 64°, low 49°.

Pressure30.12 inHg
Wind15.4 mph NW
Humidity39%
Visibility—
Dew point34°
Fri, 3072° / 56°0.9Heavy rain
72 °Heavy rain

Eureka, Friday, 30 October

Heavy rain. High 72°, low 56°.

Pressure29.77 inHg
Wind22.8 mph S
Humidity91%
Visibility—
Dew point62°
Sat, 3170° / 50°0.15Light rain
70 °Light rain

Eureka, Saturday, 31 October

Light rain. High 70°, low 50°.

Pressure29.74 inHg
Wind25 mph S
Humidity46%
Visibility—
Dew point40°
Sun, 0160° / 44°0Partly cloudy
60 °Partly cloudy

Eureka, Sunday, 1 November

Partly cloudy. High 60°, low 44°.

Pressure30.18 inHg
Wind6.7 mph E
Humidity30%
Visibility—
Dew point25°

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 Eureka, 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 Eureka, 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.