As of 17:59 CDT

Weather in Dayton, IL

73°

Dayton, Saturday, 10 October, 17:59

Overcast. Feels like 73°. High 80°, low 59°.

Pressure30.00 inHg

Wind6.7 mph SE

Humidity50%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

Sun, 1179° / 56°

79 °

Dayton, Sunday, 11 October

Clear. High 79°, low 56°.

Pressure29.97 inHg

Wind4 mph S

Humidity61%

Visibility6.2 mi

Dew point57°

Mon, 1282° / 62°

82 °

Dayton, Monday, 12 October

Overcast. High 82°, low 62°.

Pressure29.85 inHg

Wind11.2 mph SW

Humidity60%

Visibility6.2 mi

Dew point64°

Tue, 1380° / 67°

80 °

Dayton, Tuesday, 13 October

Clear. High 80°, low 67°.

Pressure29.83 inHg

Wind9.9 mph W

Humidity67%

Visibility6.2 mi

Dew point67°

Wed, 1472° / 59°

0.2

72 °

Dayton, Wednesday, 14 October

Rain. High 72°, low 59°.

Pressure30.06 inHg

Wind6.7 mph N

Humidity66%

Visibility6.2 mi

Dew point59°

Thu, 1557° / 55°

0.49

57 °

Dayton, Thursday, 15 October

Rain. High 57°, low 55°.

Pressure30.24 inHg

Wind10.9 mph E

Humidity86%

Visibility—

Dew point53°

Fri, 1655° / 40°

55 °

Dayton, Friday, 16 October

Overcast. High 55°, low 40°.

Pressure30.06 inHg

Wind21.4 mph W

Humidity51%

Visibility—

Dew point36°

Sat, 1741° / 34°

0.02

41 °

Dayton, Saturday, 17 October

Snow. High 41°, low 34°.

Pressure30.24 inHg

Wind17.6 mph NW

Humidity61%

Visibility—

Dew point26°

Sun, 1845° / 29°

45 °

Dayton, Sunday, 18 October

Clear. High 45°, low 29°.

Pressure30.56 inHg

Wind14 mph N

Humidity40%

Visibility—

Dew point19°

Mon, 1951° / 32°

51 °

Dayton, Monday, 19 October

Overcast. High 51°, low 32°.

Pressure30.62 inHg

Wind11.6 mph S

Humidity41%

Visibility—

Dew point24°

Tue, 2060° / 38°

60 °

Dayton, Tuesday, 20 October

Clear. High 60°, low 38°.

Pressure30.39 inHg

Wind12.7 mph S

Humidity32%

Visibility—

Dew point25°

Wed, 2166° / 43°

66 °

Dayton, Wednesday, 21 October

Clear. High 66°, low 43°.

Pressure30.27 inHg

Wind13.4 mph S

Humidity33%

Visibility—

Dew point31°

Thu, 2267° / 49°

67 °

Dayton, Thursday, 22 October

Overcast. High 67°, low 49°.

Pressure30.24 inHg

Wind14.8 mph SW

Humidity34%

Visibility—

Dew point35°

Fri, 2351° / 46°

51 °

Dayton, Friday, 23 October

Overcast. High 51°, low 46°.

Pressure30.21 inHg

Wind16.7 mph NW

Humidity77%

Visibility—

Dew point41°

Sat, 2458° / 45°

58 °

Dayton, Saturday, 24 October

Overcast. High 58°, low 45°.

Pressure30.18 inHg

Wind9.6 mph NE

Humidity61%

Visibility—

Dew point43°

Sun, 2562° / 46°

62 °

Dayton, Sunday, 25 October

Mostly clear. High 62°, low 46°.

Pressure30.15 inHg

Wind11.7 mph NE

Humidity51%

Visibility—

Dew point41°

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.