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As of 04:31 CDT

Weather in Eureka, IL

60°Current weather

Eureka, Saturday, 10 October, 04:31

Clear. Feels like 59°. High 81°, low 58°.

Pressure30.03 inHg
Wind10.6 mph S
Humidity71%
Visibility6.2 mi
Dew point51°
Sun, 1179° / 55°0Clear
79 °Clear

Eureka, Sunday, 11 October

Clear. High 79°, low 55°.

Pressure29.97 inHg
Wind2.6 mph S
Humidity58%
Visibility6.2 mi
Dew point57°
Mon, 1285° / 64°0Partly cloudy
85 °Partly cloudy

Eureka, Monday, 12 October

Partly cloudy. High 85°, low 64°.

Pressure29.85 inHg
Wind11.5 mph SW
Humidity54%
Visibility6.2 mi
Dew point62°
Tue, 1383° / 70°0Clear
83 °Clear

Eureka, Tuesday, 13 October

Clear. High 83°, low 70°.

Pressure29.83 inHg
Wind9.2 mph W
Humidity58%
Visibility6.2 mi
Dew point65°
Wed, 1471° / 60°0.17Light rain
71 °Light rain

Eureka, Wednesday, 14 October

Light rain. High 71°, low 60°.

Pressure30.09 inHg
Wind12.7 mph NE
Humidity60%
Visibility—
Dew point56°
Thu, 1560° / 55°0.13Light rain
60 °Light rain

Eureka, Thursday, 15 October

Light rain. High 60°, low 55°.

Pressure30.33 inHg
Wind17.4 mph NW
Humidity65%
Visibility—
Dew point46°
Fri, 1664° / 50°0Overcast
64 °Overcast

Eureka, Friday, 16 October

Overcast. High 64°, low 50°.

Pressure29.94 inHg
Wind17.4 mph W
Humidity40%
Visibility—
Dew point38°
Sat, 1746° / 39°0.04Light rain
46 °Light rain

Eureka, Saturday, 17 October

Light rain. High 46°, low 39°.

Pressure30.18 inHg
Wind15.4 mph N
Humidity94%
Visibility—
Dew point38°
Sun, 1848° / 32°0Clear
48 °Clear

Eureka, Sunday, 18 October

Clear. High 48°, low 32°.

Pressure30.47 inHg
Wind14.5 mph N
Humidity47%
Visibility—
Dew point25°
Mon, 1953° / 35°0Overcast
53 °Overcast

Eureka, Monday, 19 October

Overcast. High 53°, low 35°.

Pressure30.42 inHg
Wind9.1 mph S
Humidity43%
Visibility—
Dew point27°
Tue, 2059° / 39°0Overcast
59 °Overcast

Eureka, Tuesday, 20 October

Overcast. High 59°, low 39°.

Pressure30.30 inHg
Wind11.4 mph S
Humidity35%
Visibility—
Dew point27°
Wed, 2164° / 42°0Clear
64 °Clear

Eureka, Wednesday, 21 October

Clear. High 64°, low 42°.

Pressure30.27 inHg
Wind11.4 mph S
Humidity31%
Visibility—
Dew point29°
Thu, 2270° / 46°0Clear
70 °Clear

Eureka, Thursday, 22 October

Clear. High 70°, low 46°.

Pressure30.12 inHg
Wind15.8 mph S
Humidity34%
Visibility—
Dew point36°
Fri, 2363° / 50°0.06Light rain
63 °Light rain

Eureka, Friday, 23 October

Light rain. High 63°, low 50°.

Pressure29.97 inHg
Wind12 mph S
Humidity59%
Visibility—
Dew point47°
Sat, 2463° / 47°0.09Light rain
63 °Light rain

Eureka, Saturday, 24 October

Light rain. High 63°, low 47°.

Pressure29.80 inHg
Wind14.5 mph W
Humidity53%
Visibility—
Dew point44°
Sun, 2556° / 42°0Clear
56 °Clear

Eureka, Sunday, 25 October

Clear. High 56°, low 42°.

Pressure29.91 inHg
Wind18.5 mph W
Humidity45%
Visibility—
Dew point32°

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.