As of 10:26 CDT

Weather in Dayton, IL

72°

Dayton, Saturday, 10 October, 10:26

Overcast. Feels like 72°. High 80°, low 60°.

Pressure30.09 inHg

Wind7.7 mph S

Humidity54%

Visibility6.2 mi

Dew point55°

See detailed hourly forecast

Sun, 1176° / 56°

76 °

Dayton, Sunday, 11 October

Clear. High 76°, low 56°.

Pressure29.97 inHg

Wind3.8 mph S

Humidity59%

Visibility6.2 mi

Dew point56°

Mon, 1282° / 60°

82 °

Dayton, Monday, 12 October

Clear. High 82°, low 60°.

Pressure29.85 inHg

Wind10.9 mph SW

Humidity58%

Visibility6.2 mi

Dew point63°

Tue, 1379° / 64°

79 °

Dayton, Tuesday, 13 October

Clear. High 79°, low 64°.

Pressure29.83 inHg

Wind10.3 mph W

Humidity66%

Visibility6.2 mi

Dew point66°

Wed, 1468° / 56°

0.05

68 °

Dayton, Wednesday, 14 October

Light rain. High 68°, low 56°.

Pressure30.12 inHg

Wind12.3 mph NE

Humidity59%

Visibility—

Dew point52°

Thu, 1563° / 53°

0.05

63 °

Dayton, Thursday, 15 October

Light rain. High 63°, low 53°.

Pressure30.30 inHg

Wind11.7 mph E

Humidity58%

Visibility—

Dew point46°

Fri, 1657° / 41°

0.02

57 °

Dayton, Friday, 16 October

Light rain. High 57°, low 41°.

Pressure29.85 inHg

Wind26.4 mph W

Humidity49%

Visibility—

Dew point34°

Sat, 1742° / 33°

42 °

Dayton, Saturday, 17 October

Overcast. High 42°, low 33°.

Pressure30.30 inHg

Wind21.8 mph NW

Humidity51%

Visibility—

Dew point24°

Sun, 1847° / 28°

47 °

Dayton, Sunday, 18 October

Clear. High 47°, low 28°.

Pressure30.50 inHg

Wind9.7 mph N

Humidity36%

Visibility—

Dew point17°

Mon, 1958° / 37°

58 °

Dayton, Monday, 19 October

Overcast. High 58°, low 37°.

Pressure30.36 inHg

Wind14.6 mph S

Humidity35%

Visibility—

Dew point25°

Tue, 2062° / 42°

62 °

Dayton, Tuesday, 20 October

Overcast. High 62°, low 42°.

Pressure30.27 inHg

Wind13.6 mph S

Humidity32%

Visibility—

Dew point28°

Wed, 2155° / 51°

0.15

55 °

Dayton, Wednesday, 21 October

Light rain. High 55°, low 51°.

Pressure30.00 inHg

Wind16.4 mph SW

Humidity80%

Visibility—

Dew point45°

Thu, 2266° / 43°

66 °

Dayton, Thursday, 22 October

Clear. High 66°, low 43°.

Pressure30.09 inHg

Wind15.4 mph SW

Humidity45%

Visibility—

Dew point38°

Fri, 2357° / 43°

57 °

Dayton, Friday, 23 October

Clear. High 57°, low 43°.

Pressure30.18 inHg

Wind11.1 mph NW

Humidity41%

Visibility—

Dew point30°

Sat, 2457° / 41°

57 °

Dayton, Saturday, 24 October

Overcast. High 57°, low 41°.

Pressure30.21 inHg

Wind7.4 mph E

Humidity40%

Visibility—

Dew point28°

Sun, 2557° / 40°

0.2

57 °

Dayton, Sunday, 25 October

Light rain. High 57°, low 40°.

Pressure29.74 inHg

Wind17.1 mph NW

Humidity88%

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 Dayton, 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 Dayton, 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.