As of 02:36 CDT

Weather in Dayton, IL

40°

Dayton, Saturday, 17 October, 02:36

Clear. Feels like 35°. High 56°, low 37°.

Pressure30.47 inHg

Wind7.8 mph N

Humidity84%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

Sun, 1862° / 42°

62 °

Dayton, Sunday, 18 October

Clear. High 62°, low 42°.

Pressure30.45 inHg

Wind12.2 mph SW

Humidity50%

Visibility6.2 mi

Dew point40°

Mon, 1965° / 41°

65 °

Dayton, Monday, 19 October

Clear. High 65°, low 41°.

Pressure30.42 inHg

Wind4.5 mph S

Humidity53%

Visibility6.2 mi

Dew point44°

Tue, 2067° / 43°

67 °

Dayton, Tuesday, 20 October

Clear. High 67°, low 43°.

Pressure30.39 inHg

Wind3 mph SE

Humidity52%

Visibility6.2 mi

Dew point44°

Wed, 2169° / 45°

69 °

Dayton, Wednesday, 21 October

Clear. High 69°, low 45°.

Pressure30.27 inHg

Wind4.6 mph S

Humidity46%

Visibility—

Dew point43°

Thu, 2271° / 50°

0.01

71 °

Dayton, Thursday, 22 October

Light rain. High 71°, low 50°.

Pressure30.18 inHg

Wind5.5 mph SE

Humidity48%

Visibility—

Dew point46°

Fri, 2373° / 57°

73 °

Dayton, Friday, 23 October

Mostly clear. High 73°, low 57°.

Pressure30.24 inHg

Wind7.8 mph SE

Humidity34%

Visibility—

Dew point40°

Sat, 2473° / 56°

73 °

Dayton, Saturday, 24 October

Overcast. High 73°, low 56°.

Pressure30.18 inHg

Wind11.6 mph S

Humidity33%

Visibility—

Dew point39°

Sun, 2558° / 48°

58 °

Dayton, Sunday, 25 October

Overcast. High 58°, low 48°.

Pressure30.36 inHg

Wind12.1 mph N

Humidity50%

Visibility—

Dew point38°

Mon, 2656° / 47°

0.03

56 °

Dayton, Monday, 26 October

Light rain. High 56°, low 47°.

Pressure30.33 inHg

Wind9.5 mph SE

Humidity63%

Visibility—

Dew point39°

Tue, 2767° / 54°

67 °

Dayton, Tuesday, 27 October

Overcast. High 67°, low 54°.

Pressure30.12 inHg

Wind11.8 mph W

Humidity71%

Visibility—

Dew point56°

Wed, 2856° / 45°

56 °

Dayton, Wednesday, 28 October

Clear. High 56°, low 45°.

Pressure30.15 inHg

Wind9.9 mph N

Humidity46%

Visibility—

Dew point34°

Thu, 2953° / 45°

0.33

53 °

Dayton, Thursday, 29 October

Rain. High 53°, low 45°.

Pressure29.97 inHg

Wind17.2 mph E

Humidity54%

Visibility—

Dew point36°

Fri, 3063° / 51°

0.15

63 °

Dayton, Friday, 30 October

Light rain. High 63°, low 51°.

Pressure29.53 inHg

Wind17.1 mph NW

Humidity77%

Visibility—

Dew point54°

Sat, 3155° / 46°

55 °

Dayton, Saturday, 31 October

Mostly clear. High 55°, low 46°.

Pressure30.12 inHg

Wind16.6 mph NW

Humidity49%

Visibility—

Dew point34°

Sun, 0159° / 43°

59 °

Dayton, Sunday, 1 November

Clear. High 59°, low 43°.

Pressure30.12 inHg

Wind6.5 mph W

Humidity55%

Visibility—

Dew point40°

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.