As of 15:34 CDT

Weather in Dayton, IL

88°

Dayton, Monday, 12 October, 15:34

Overcast. Feels like 90°. High 88°, low 62°.

Pressure29.74 inHg

Wind12.5 mph SW

Humidity45%

Visibility6.2 mi

Dew point65°

See detailed hourly forecast

Tue, 1382° / 64°

0.02

82 °

Dayton, Tuesday, 13 October

Light rain. High 82°, low 64°.

Pressure29.85 inHg

Wind8.3 mph W

Humidity59%

Visibility6.2 mi

Dew point62°

Wed, 1472° / 60°

0.67

72 °

Dayton, Wednesday, 14 October

Heavy rain. High 72°, low 60°.

Pressure30.06 inHg

Wind7.9 mph NE

Humidity73%

Visibility6.2 mi

Dew point61°

Thu, 1560° / 58°

1.26

60 °

Dayton, Thursday, 15 October

Rain. High 60°, low 58°.

Pressure30.03 inHg

Wind8 mph E

Humidity95%

Visibility1.5 mi

Dew point58°

Fri, 1657° / 47°

0.13

57 °

Dayton, Friday, 16 October

Rain. High 57°, low 47°.

Pressure30.27 inHg

Wind21.8 mph NW

Humidity48%

Visibility6.2 mi

Dew point36°

Sat, 1759° / 38°

59 °

Dayton, Saturday, 17 October

Clear. High 59°, low 38°.

Pressure30.47 inHg

Wind9.6 mph SW

Humidity38%

Visibility—

Dew point29°

Sun, 1862° / 43°

62 °

Dayton, Sunday, 18 October

Clear. High 62°, low 43°.

Pressure30.30 inHg

Wind14 mph SW

Humidity39%

Visibility—

Dew point33°

Mon, 1967° / 46°

67 °

Dayton, Monday, 19 October

Overcast. High 67°, low 46°.

Pressure30.30 inHg

Wind7.8 mph SW

Humidity46%

Visibility—

Dew point41°

Tue, 2070° / 57°

70 °

Dayton, Tuesday, 20 October

Overcast. High 70°, low 57°.

Pressure30.27 inHg

Wind6.8 mph S

Humidity62%

Visibility—

Dew point55°

Wed, 2174° / 57°

74 °

Dayton, Wednesday, 21 October

Clear. High 74°, low 57°.

Pressure30.18 inHg

Wind10 mph S

Humidity58%

Visibility—

Dew point55°

Thu, 2272° / 61°

72 °

Dayton, Thursday, 22 October

Overcast. High 72°, low 61°.

Pressure30.09 inHg

Wind13 mph S

Humidity56%

Visibility—

Dew point52°

Fri, 2375° / 66°

75 °

Dayton, Friday, 23 October

Overcast. High 75°, low 66°.

Pressure29.88 inHg

Wind21.6 mph S

Humidity48%

Visibility—

Dew point53°

Sat, 2471° / 48°

0.09

71 °

Dayton, Saturday, 24 October

Light rain. High 71°, low 48°.

Pressure29.77 inHg

Wind21.6 mph W

Humidity60%

Visibility—

Dew point44°

Sun, 2553° / 45°

53 °

Dayton, Sunday, 25 October

Overcast. High 53°, low 45°.

Pressure30.06 inHg

Wind13.7 mph NW

Humidity60%

Visibility—

Dew point37°

Mon, 2659° / 43°

59 °

Dayton, Monday, 26 October

Clear. High 59°, low 43°.

Pressure30.21 inHg

Wind5.4 mph E

Humidity54%

Visibility—

Dew point39°

Tue, 2764° / 48°

64 °

Dayton, Tuesday, 27 October

Partly cloudy. High 64°, low 48°.

Pressure29.94 inHg

Wind7.6 mph SW

Humidity50%

Visibility—

Dew point42°

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.