As of 17:20 CDT

Weather in Donnellson, IL

79°

Donnellson, Wednesday, 14 October, 17:20

Overcast. Feels like 80°. High 79°, low 69°.

Pressure30.03 inHg

Wind2.5 mph N

Humidity86%

Visibility2.6 mi

Dew point73°

See detailed hourly forecast

Thu, 1575° / 68°

1.69

75 °

Donnellson, Thursday, 15 October

Heavy rain. High 75°, low 68°.

Pressure29.97 inHg

Wind6.4 mph S

Humidity96%

Visibility2.1 mi

Dew point70°

Fri, 1663° / 50°

0.16

63 °

Donnellson, Friday, 16 October

Rain. High 63°, low 50°.

Pressure30.18 inHg

Wind17.8 mph NW

Humidity50%

Visibility6.2 mi

Dew point37°

Sat, 1757° / 43°

57 °

Donnellson, Saturday, 17 October

Clear. High 57°, low 43°.

Pressure30.53 inHg

Wind5.5 mph N

Humidity55%

Visibility6.2 mi

Dew point38°

Sun, 1860° / 40°

60 °

Donnellson, Sunday, 18 October

Clear. High 60°, low 40°.

Pressure30.50 inHg

Wind5.5 mph S

Humidity45%

Visibility6.2 mi

Dew point35°

Mon, 1964° / 41°

64 °

Donnellson, Monday, 19 October

Overcast. High 64°, low 41°.

Pressure30.42 inHg

Wind4.4 mph SE

Humidity39%

Visibility—

Dew point35°

Tue, 2074° / 44°

74 °

Donnellson, Tuesday, 20 October

Partly cloudy. High 74°, low 44°.

Pressure30.30 inHg

Wind6 mph S

Humidity49%

Visibility—

Dew point46°

Wed, 2178° / 58°

78 °

Donnellson, Wednesday, 21 October

Clear. High 78°, low 58°.

Pressure30.21 inHg

Wind10.3 mph S

Humidity43%

Visibility—

Dew point50°

Thu, 2273° / 63°

0.02

73 °

Donnellson, Thursday, 22 October

Light rain. High 73°, low 63°.

Pressure30.06 inHg

Wind13.8 mph S

Humidity52%

Visibility—

Dew point53°

Fri, 2381° / 62°

0.02

81 °

Donnellson, Friday, 23 October

Light rain. High 81°, low 62°.

Pressure30.06 inHg

Wind7.6 mph SE

Humidity59%

Visibility—

Dew point61°

Sat, 2483° / 57°

83 °

Donnellson, Saturday, 24 October

Overcast. High 83°, low 57°.

Pressure29.97 inHg

Wind18.4 mph SW

Humidity40%

Visibility—

Dew point54°

Sun, 2561° / 49°

61 °

Donnellson, Sunday, 25 October

Overcast. High 61°, low 49°.

Pressure30.36 inHg

Wind14.2 mph NW

Humidity30%

Visibility—

Dew point27°

Mon, 2660° / 42°

60 °

Donnellson, Monday, 26 October

Clear. High 60°, low 42°.

Pressure30.39 inHg

Wind7.2 mph NW

Humidity26%

Visibility—

Dew point22°

Tue, 2762° / 42°

62 °

Donnellson, Tuesday, 27 October

Overcast. High 62°, low 42°.

Pressure30.27 inHg

Wind6.4 mph S

Humidity25%

Visibility—

Dew point22°

Wed, 2859° / 47°

0.14

59 °

Donnellson, Wednesday, 28 October

Light rain. High 59°, low 47°.

Pressure30.09 inHg

Wind6.1 mph SE

Humidity30%

Visibility—

Dew point27°

Thu, 2963° / 45°

0.04

63 °

Donnellson, Thursday, 29 October

Light rain. High 63°, low 45°.

Pressure30.09 inHg

Wind6.9 mph SW

Humidity60%

Visibility—

Dew point44°

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 Donnellson, 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 Donnellson, 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.