As of 22:35 CDT

Weather in Arlington, IL

51°

Arlington, Tuesday, 20 October, 22:35

Clear. Feels like 49°. High 70°, low 42°.

Pressure30.30 inHg

Wind4.4 mph SE

Humidity77%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Wed, 2172° / 43°

72 °

Arlington, Wednesday, 21 October

Clear. High 72°, low 43°.

Pressure30.27 inHg

Wind3.8 mph S

Humidity50%

Visibility6.2 mi

Dew point47°

Thu, 2274° / 46°

74 °

Arlington, Thursday, 22 October

Clear. High 74°, low 46°.

Pressure30.27 inHg

Wind1.9 mph SE

Humidity56%

Visibility6.2 mi

Dew point53°

Fri, 2370° / 52°

70 °

Arlington, Friday, 23 October

Clear. High 70°, low 52°.

Pressure30.33 inHg

Wind6.5 mph SE

Humidity62%

Visibility6.2 mi

Dew point52°

Sat, 2468° / 49°

68 °

Arlington, Saturday, 24 October

Overcast. High 68°, low 49°.

Pressure30.36 inHg

Wind8.8 mph S

Humidity59%

Visibility6.2 mi

Dew point49°

Sun, 2571° / 52°

71 °

Arlington, Sunday, 25 October

Overcast. High 71°, low 52°.

Pressure30.36 inHg

Wind7 mph S

Humidity52%

Visibility—

Dew point49°

Mon, 2669° / 45°

0.04

69 °

Arlington, Monday, 26 October

Light rain. High 69°, low 45°.

Pressure30.18 inHg

Wind15.3 mph NW

Humidity55%

Visibility—

Dew point50°

Tue, 2748° / 39°

0.09

48 °

Arlington, Tuesday, 27 October

Light rain. High 48°, low 39°.

Pressure30.39 inHg

Wind15.2 mph N

Humidity52%

Visibility—

Dew point30°

Wed, 2849° / 35°

49 °

Arlington, Wednesday, 28 October

Clear. High 49°, low 35°.

Pressure30.33 inHg

Wind6.8 mph NE

Humidity49%

Visibility—

Dew point28°

Thu, 2952° / 36°

52 °

Arlington, Thursday, 29 October

Clear. High 52°, low 36°.

Pressure30.24 inHg

Wind8 mph NW

Humidity51%

Visibility—

Dew point32°

Fri, 3054° / 38°

54 °

Arlington, Friday, 30 October

Clear. High 54°, low 38°.

Pressure30.24 inHg

Wind7.7 mph SE

Humidity42%

Visibility—

Dew point28°

Sat, 3160° / 40°

60 °

Arlington, Saturday, 31 October

Clear. High 60°, low 40°.

Pressure30.00 inHg

Wind15.5 mph S

Humidity37%

Visibility—

Dew point30°

Sun, 0154° / 48°

0.08

54 °

Arlington, Sunday, 1 November

Light rain. High 54°, low 48°.

Pressure29.94 inHg

Wind11.7 mph S

Humidity94%

Visibility—

Dew point49°

Mon, 0259° / 46°

59 °

Arlington, Monday, 2 November

Clear. High 59°, low 46°.

Pressure30.15 inHg

Wind12.6 mph NW

Humidity36%

Visibility—

Dew point30°

Tue, 0350° / 38°

50 °

Arlington, Tuesday, 3 November

Overcast. High 50°, low 38°.

Pressure30.33 inHg

Wind7.7 mph NW

Humidity41%

Visibility—

Dew point25°

Wed, 0447° / 42°

47 °

Arlington, Wednesday, 4 November

Overcast. High 47°, low 42°.

Pressure30.15 inHg

Wind10.2 mph E

Humidity61%

Visibility—

Dew point33°

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 Arlington, 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 Arlington, 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.