As of 16:40 CDT

Weather in Blair, IL

54°

Blair, Friday, 16 October, 16:40

Partly cloudy. Feels like 53°. High 63°, low 51°.

Pressure30.24 inHg

Wind16.1 mph NW

Humidity70%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Sat, 1759° / 44°

59 °

Blair, Saturday, 17 October

Clear. High 59°, low 44°.

Pressure30.56 inHg

Wind4.6 mph NE

Humidity53%

Visibility6.2 mi

Dew point39°

Sun, 1863° / 42°

63 °

Blair, Sunday, 18 October

Clear. High 63°, low 42°.

Pressure30.50 inHg

Wind6.5 mph SE

Humidity43%

Visibility6.2 mi

Dew point37°

Mon, 1969° / 44°

69 °

Blair, Monday, 19 October

Clear. High 69°, low 44°.

Pressure30.39 inHg

Wind2.6 mph SE

Humidity49%

Visibility6.2 mi

Dew point46°

Tue, 2070° / 46°

70 °

Blair, Tuesday, 20 October

Clear. High 70°, low 46°.

Pressure30.33 inHg

Wind1.8 mph SE

Humidity48%

Visibility6.2 mi

Dew point45°

Wed, 2172° / 49°

72 °

Blair, Wednesday, 21 October

Clear. High 72°, low 49°.

Pressure30.27 inHg

Wind3.8 mph SE

Humidity42%

Visibility—

Dew point43°

Thu, 2277° / 52°

77 °

Blair, Thursday, 22 October

Clear. High 77°, low 52°.

Pressure30.18 inHg

Wind5 mph S

Humidity32%

Visibility—

Dew point40°

Fri, 2378° / 55°

78 °

Blair, Friday, 23 October

Overcast. High 78°, low 55°.

Pressure30.15 inHg

Wind5.9 mph SE

Humidity28%

Visibility—

Dew point38°

Sat, 2479° / 58°

79 °

Blair, Saturday, 24 October

Overcast. High 79°, low 58°.

Pressure30.24 inHg

Wind6.2 mph SE

Humidity25%

Visibility—

Dew point37°

Sun, 2579° / 58°

79 °

Blair, Sunday, 25 October

Overcast. High 79°, low 58°.

Pressure30.18 inHg

Wind10.3 mph S

Humidity33%

Visibility—

Dew point44°

Mon, 2668° / 54°

68 °

Blair, Monday, 26 October

Overcast. High 68°, low 54°.

Pressure30.21 inHg

Wind12.7 mph NW

Humidity59%

Visibility—

Dew point53°

Tue, 2761° / 38°

61 °

Blair, Tuesday, 27 October

Overcast. High 61°, low 38°.

Pressure30.36 inHg

Wind9.7 mph N

Humidity24%

Visibility—

Dew point19°

Wed, 2864° / 50°

64 °

Blair, Wednesday, 28 October

Overcast. High 64°, low 50°.

Pressure30.24 inHg

Wind8.3 mph S

Humidity23%

Visibility—

Dew point21°

Thu, 2971° / 57°

71 °

Blair, Thursday, 29 October

Overcast. High 71°, low 57°.

Pressure29.91 inHg

Wind16.8 mph SW

Humidity51%

Visibility—

Dew point49°

Fri, 3068° / 50°

68 °

Blair, Friday, 30 October

Clear. High 68°, low 50°.

Pressure30.03 inHg

Wind16.2 mph NW

Humidity36%

Visibility—

Dew point38°

Sat, 3169° / 48°

0.01

69 °

Blair, Saturday, 31 October

Light rain. High 69°, low 48°.

Pressure30.00 inHg

Wind10.6 mph S

Humidity35%

Visibility—

Dew point38°

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 Blair, 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 Blair, 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.