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As of 17:11 CDT

Weather in Seneca, IL

82°Current weather

Seneca, Saturday, 8 August, 17:11

Clear. Feels like 85°. High 83°, low 69°.

Pressure29.97 inHg
Wind5.7 mph W
Humidity64%
Visibility6.2 mi
Dew point69°
Sun, 0987° / 64°0.42Rain
87 °Rain

Seneca, Sunday, 9 August

Rain. High 87°, low 64°.

Pressure29.91 inHg
Wind4.5 mph SE
Humidity85%
Visibility6.2 mi
Dew point75°
Mon, 1086° / 72°0.04Light rain
86 °Light rain

Seneca, Monday, 10 August

Light rain. High 86°, low 72°.

Pressure29.88 inHg
Wind10.2 mph SE
Humidity80%
Visibility6.2 mi
Dew point74°
Tue, 1186° / 72°0.09Light rain
86 °Light rain

Seneca, Tuesday, 11 August

Light rain. High 86°, low 72°.

Pressure29.77 inHg
Wind20.2 mph SW
Humidity71%
Visibility6.2 mi
Dew point75°
Wed, 1278° / 68°0.03Light rain
78 °Light rain

Seneca, Wednesday, 12 August

Light rain. High 78°, low 68°.

Pressure29.91 inHg
Wind9.5 mph NW
Humidity86%
Visibility6.2 mi
Dew point70°
Thu, 1373° / 62°0.02Light rain
73 °Light rain

Seneca, Thursday, 13 August

Light rain. High 73°, low 62°.

Pressure29.94 inHg
Wind14.3 mph E
Humidity72%
Visibility—
Dew point62°
Fri, 1474° / 55°0Clear
74 °Clear

Seneca, Friday, 14 August

Clear. High 74°, low 55°.

Pressure30.18 inHg
Wind7.8 mph N
Humidity64%
Visibility—
Dew point57°
Sat, 1573° / 54°0Overcast
73 °Overcast

Seneca, Saturday, 15 August

Overcast. High 73°, low 54°.

Pressure30.33 inHg
Wind7 mph S
Humidity62%
Visibility—
Dew point56°
Sun, 1676° / 57°0Overcast
76 °Overcast

Seneca, Sunday, 16 August

Overcast. High 76°, low 57°.

Pressure30.18 inHg
Wind9.8 mph S
Humidity65%
Visibility—
Dew point60°
Mon, 1778° / 68°0.01Light rain
78 °Light rain

Seneca, Monday, 17 August

Light rain. High 78°, low 68°.

Pressure29.97 inHg
Wind7.1 mph S
Humidity85%
Visibility—
Dew point71°
Tue, 1883° / 68°0.02Light rain
83 °Light rain

Seneca, Tuesday, 18 August

Light rain. High 83°, low 68°.

Pressure30.03 inHg
Wind7.2 mph E
Humidity77%
Visibility—
Dew point71°
Wed, 1983° / 63°0.25Light rain
83 °Light rain

Seneca, Wednesday, 19 August

Light rain. High 83°, low 63°.

Pressure29.91 inHg
Wind8.5 mph SW
Humidity72%
Visibility—
Dew point71°
Thu, 2075° / 66°0.22Light rain
75 °Light rain

Seneca, Thursday, 20 August

Light rain. High 75°, low 66°.

Pressure29.91 inHg
Wind8.9 mph N
Humidity80%
Visibility—
Dew point67°
Fri, 2179° / 62°0Light rain
79 °Light rain

Seneca, Friday, 21 August

Light rain. High 79°, low 62°.

Pressure29.97 inHg
Wind6.8 mph E
Humidity64%
Visibility—
Dew point63°
Sat, 2278° / 58°0.01Light rain
78 °Light rain

Seneca, Saturday, 22 August

Light rain. High 78°, low 58°.

Pressure29.91 inHg
Wind15.9 mph NE
Humidity68%
Visibility—
Dew point65°
Sun, 2367° / 49°0Clear
67 °Clear

Seneca, Sunday, 23 August

Clear. High 67°, low 49°.

Pressure30.24 inHg
Wind12 mph E
Humidity53%
Visibility—
Dew point46°

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.