As of 12:42 CDT

Weather in Donnellson, IL

78°

Donnellson, Saturday, 10 October, 12:42

Overcast. Feels like 77°. High 78°, low 56°.

Pressure30.06 inHg

Wind6.8 mph SE

Humidity49%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Sun, 1185° / 52°

85 °

Donnellson, Sunday, 11 October

Clear. High 85°, low 52°.

Pressure30.00 inHg

Wind0.6 mph W

Humidity48%

Visibility6.2 mi

Dew point54°

Mon, 1289° / 63°

89 °

Donnellson, Monday, 12 October

Clear. High 89°, low 63°.

Pressure29.91 inHg

Wind9.9 mph SW

Humidity43%

Visibility6.2 mi

Dew point59°

Tue, 1389° / 70°

89 °

Donnellson, Tuesday, 13 October

Clear. High 89°, low 70°.

Pressure29.88 inHg

Wind8.8 mph W

Humidity51%

Visibility6.2 mi

Dew point66°

Wed, 1477° / 68°

0.14

77 °

Donnellson, Wednesday, 14 October

Light rain. High 77°, low 68°.

Pressure30.03 inHg

Wind1.1 mph S

Humidity80%

Visibility5.2 mi

Dew point68°

Thu, 1566° / 57°

0.81

66 °

Donnellson, Thursday, 15 October

Rain. High 66°, low 57°.

Pressure30.18 inHg

Wind10.8 mph NE

Humidity78%

Visibility—

Dew point56°

Fri, 1664° / 46°

0.16

64 °

Donnellson, Friday, 16 October

Rain. High 64°, low 46°.

Pressure30.03 inHg

Wind24.7 mph W

Humidity34%

Visibility—

Dew point30°

Sat, 1743° / 34°

43 °

Donnellson, Saturday, 17 October

Overcast. High 43°, low 34°.

Pressure30.36 inHg

Wind20.5 mph NW

Humidity41%

Visibility—

Dew point19°

Sun, 1851° / 29°

51 °

Donnellson, Sunday, 18 October

Clear. High 51°, low 29°.

Pressure30.53 inHg

Wind7.3 mph NW

Humidity29%

Visibility—

Dew point16°

Mon, 1960° / 35°

60 °

Donnellson, Monday, 19 October

Partly cloudy. High 60°, low 35°.

Pressure30.42 inHg

Wind12.1 mph S

Humidity31%

Visibility—

Dew point24°

Tue, 2065° / 40°

65 °

Donnellson, Tuesday, 20 October

Overcast. High 65°, low 40°.

Pressure30.30 inHg

Wind15.3 mph S

Humidity30%

Visibility—

Dew point29°

Wed, 2156° / 49°

0.27

56 °

Donnellson, Wednesday, 21 October

Rain. High 56°, low 49°.

Pressure30.06 inHg

Wind16.2 mph S

Humidity93%

Visibility—

Dew point51°

Thu, 2268° / 45°

68 °

Donnellson, Thursday, 22 October

Clear. High 68°, low 45°.

Pressure30.21 inHg

Wind8.8 mph SW

Humidity40%

Visibility—

Dew point37°

Fri, 2368° / 49°

68 °

Donnellson, Friday, 23 October

Clear. High 68°, low 49°.

Pressure30.18 inHg

Wind8.4 mph N

Humidity30%

Visibility—

Dew point32°

Sat, 2468° / 48°

68 °

Donnellson, Saturday, 24 October

Overcast. High 68°, low 48°.

Pressure30.15 inHg

Wind8.4 mph SE

Humidity31%

Visibility—

Dew point33°

Sun, 2566° / 51°

0.17

66 °

Donnellson, Sunday, 25 October

Light rain. High 66°, low 51°.

Pressure29.83 inHg

Wind18.4 mph NW

Humidity83%

Visibility—

Dew point58°

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.