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As of 05:15 CDT

Weather in Seneca, IL

59°Current weather

Seneca, Saturday, 10 October, 05:15

Clear. Feels like 59°. High 78°, low 59°.

Pressure30.06 inHg
Wind7.8 mph S
Humidity74%
Visibility6.2 mi
Dew point51°
Sun, 1177° / 60°0Clear
77 °Clear

Seneca, Sunday, 11 October

Clear. High 77°, low 60°.

Pressure29.97 inHg
Wind2.6 mph SE
Humidity58%
Visibility6.2 mi
Dew point57°
Mon, 1284° / 63°0Partly cloudy
84 °Partly cloudy

Seneca, Monday, 12 October

Partly cloudy. High 84°, low 63°.

Pressure29.85 inHg
Wind10.2 mph SW
Humidity54%
Visibility6.2 mi
Dew point62°
Tue, 1381° / 67°0Clear
81 °Clear

Seneca, Tuesday, 13 October

Clear. High 81°, low 67°.

Pressure29.80 inHg
Wind10 mph W
Humidity65%
Visibility6.2 mi
Dew point67°
Wed, 1471° / 58°0.46Rain
71 °Rain

Seneca, Wednesday, 14 October

Rain. High 71°, low 58°.

Pressure30.09 inHg
Wind10.1 mph NE
Humidity60%
Visibility—
Dew point54°
Thu, 1563° / 53°0.05Light rain
63 °Light rain

Seneca, Thursday, 15 October

Light rain. High 63°, low 53°.

Pressure30.36 inHg
Wind15.6 mph NW
Humidity59%
Visibility—
Dew point45°
Fri, 1664° / 50°0Overcast
64 °Overcast

Seneca, Friday, 16 October

Overcast. High 64°, low 50°.

Pressure29.91 inHg
Wind19.1 mph W
Humidity43%
Visibility—
Dew point39°
Sat, 1747° / 40°0.06Light rain
47 °Light rain

Seneca, Saturday, 17 October

Light rain. High 47°, low 40°.

Pressure30.12 inHg
Wind16.9 mph N
Humidity94%
Visibility—
Dew point39°
Sun, 1848° / 32°0Clear
48 °Clear

Seneca, Sunday, 18 October

Clear. High 48°, low 32°.

Pressure30.47 inHg
Wind15.9 mph N
Humidity50%
Visibility—
Dew point27°
Mon, 1951° / 35°0Overcast
51 °Overcast

Seneca, Monday, 19 October

Overcast. High 51°, low 35°.

Pressure30.42 inHg
Wind8.9 mph S
Humidity46%
Visibility—
Dew point28°
Tue, 2059° / 38°0Overcast
59 °Overcast

Seneca, Tuesday, 20 October

Overcast. High 59°, low 38°.

Pressure30.30 inHg
Wind10.3 mph S
Humidity36%
Visibility—
Dew point27°
Wed, 2164° / 42°0Clear
64 °Clear

Seneca, Wednesday, 21 October

Clear. High 64°, low 42°.

Pressure30.27 inHg
Wind11 mph S
Humidity33%
Visibility—
Dew point30°
Thu, 2269° / 46°0Clear
69 °Clear

Seneca, Thursday, 22 October

Clear. High 69°, low 46°.

Pressure30.15 inHg
Wind14.9 mph S
Humidity38%
Visibility—
Dew point38°
Fri, 2363° / 52°0.01Light rain
63 °Light rain

Seneca, Friday, 23 October

Light rain. High 63°, low 52°.

Pressure29.97 inHg
Wind12.9 mph S
Humidity62%
Visibility—
Dew point47°
Sat, 2463° / 48°0.09Light rain
63 °Light rain

Seneca, Saturday, 24 October

Light rain. High 63°, low 48°.

Pressure29.83 inHg
Wind12.8 mph S
Humidity57%
Visibility—
Dew point45°
Sun, 2554° / 43°0.01Light rain
54 °Light rain

Seneca, Sunday, 25 October

Light rain. High 54°, low 43°.

Pressure29.85 inHg
Wind17.6 mph W
Humidity47%
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 Seneca, 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 Seneca, 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.