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As of 13:34 CDT

Weather in Eureka, IL

82°Current weather

Eureka, Saturday, 10 October, 13:34

Overcast. Feels like 82°. High 82°, low 58°.

Pressure30.03 inHg
Wind12.1 mph S
Humidity47%
Visibility6.2 mi
Dew point60°
Sun, 1179° / 52°0Clear
79 °Clear

Eureka, Sunday, 11 October

Clear. High 79°, low 52°.

Pressure30.00 inHg
Wind3.6 mph S
Humidity58%
Visibility6.2 mi
Dew point56°
Mon, 1284° / 60°0Clear
84 °Clear

Eureka, Monday, 12 October

Clear. High 84°, low 60°.

Pressure29.85 inHg
Wind11.5 mph SW
Humidity57%
Visibility6.2 mi
Dew point63°
Tue, 1380° / 68°0Clear
80 °Clear

Eureka, Tuesday, 13 October

Clear. High 80°, low 68°.

Pressure29.85 inHg
Wind8.2 mph W
Humidity66%
Visibility6.2 mi
Dew point66°
Wed, 1472° / 59°0.02Light rain
72 °Light rain

Eureka, Wednesday, 14 October

Light rain. High 72°, low 59°.

Pressure30.09 inHg
Wind8.7 mph NE
Humidity67%
Visibility6.2 mi
Dew point58°
Thu, 1559° / 55°0.56Rain
59 °Rain

Eureka, Thursday, 15 October

Rain. High 59°, low 55°.

Pressure30.27 inHg
Wind11.5 mph E
Humidity78%
Visibility—
Dew point52°
Fri, 1660° / 40°0.08Light rain
60 °Light rain

Eureka, Friday, 16 October

Light rain. High 60°, low 40°.

Pressure29.91 inHg
Wind27.3 mph W
Humidity40%
Visibility—
Dew point30°
Sat, 1741° / 33°0Overcast
41 °Overcast

Eureka, Saturday, 17 October

Overcast. High 41°, low 33°.

Pressure30.33 inHg
Wind21.9 mph NW
Humidity50%
Visibility—
Dew point22°
Sun, 1848° / 28°0Clear
48 °Clear

Eureka, Sunday, 18 October

Clear. High 48°, low 28°.

Pressure30.53 inHg
Wind7.9 mph NW
Humidity31%
Visibility—
Dew point15°
Mon, 1959° / 36°0Overcast
59 °Overcast

Eureka, Monday, 19 October

Overcast. High 59°, low 36°.

Pressure30.36 inHg
Wind15.2 mph S
Humidity30%
Visibility—
Dew point22°
Tue, 2064° / 42°0Overcast
64 °Overcast

Eureka, Tuesday, 20 October

Overcast. High 64°, low 42°.

Pressure30.27 inHg
Wind15.1 mph S
Humidity26%
Visibility—
Dew point24°
Wed, 2156° / 49°0.17Rain
56 °Rain

Eureka, Wednesday, 21 October

Rain. High 56°, low 49°.

Pressure30.00 inHg
Wind16.6 mph S
Humidity90%
Visibility—
Dew point46°
Thu, 2268° / 43°0Clear
68 °Clear

Eureka, Thursday, 22 October

Clear. High 68°, low 43°.

Pressure30.12 inHg
Wind14.1 mph SW
Humidity41%
Visibility—
Dew point37°
Fri, 2360° / 44°0Clear
60 °Clear

Eureka, Friday, 23 October

Clear. High 60°, low 44°.

Pressure30.18 inHg
Wind9.7 mph NW
Humidity37%
Visibility—
Dew point30°
Sat, 2461° / 44°0.02Light rain
61 °Light rain

Eureka, Saturday, 24 October

Light rain. High 61°, low 44°.

Pressure30.18 inHg
Wind9 mph SE
Humidity40%
Visibility—
Dew point31°
Sun, 2560° / 43°0.21Light rain
60 °Light rain

Eureka, Sunday, 25 October

Light rain. High 60°, low 43°.

Pressure29.77 inHg
Wind20.5 mph S
Humidity77%
Visibility—
Dew point52°

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.