As of 17:50 CDT

Weather in Arlington, IL

51°

Arlington, Friday, 16 October, 17:50

Partly cloudy. Feels like 48°. High 55°, low 45°.

Pressure30.27 inHg

Wind16.8 mph N

Humidity66%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Sat, 1756° / 36°

56 °

Arlington, Saturday, 17 October

Clear. High 56°, low 36°.

Pressure30.56 inHg

Wind5 mph SW

Humidity45%

Visibility6.2 mi

Dew point28°

Sun, 1862° / 41°

62 °

Arlington, Sunday, 18 October

Clear. High 62°, low 41°.

Pressure30.45 inHg

Wind13.1 mph S

Humidity49%

Visibility6.2 mi

Dew point39°

Mon, 1964° / 42°

64 °

Arlington, Monday, 19 October

Mostly clear. High 64°, low 42°.

Pressure30.39 inHg

Wind5.6 mph S

Humidity53%

Visibility6.2 mi

Dew point44°

Tue, 2067° / 44°

67 °

Arlington, Tuesday, 20 October

Clear. High 67°, low 44°.

Pressure30.36 inHg

Wind4.9 mph SE

Humidity50%

Visibility6.2 mi

Dew point44°

Wed, 2168° / 49°

68 °

Arlington, Wednesday, 21 October

Overcast. High 68°, low 49°.

Pressure30.27 inHg

Wind5.1 mph S

Humidity45%

Visibility—

Dew point43°

Thu, 2271° / 49°

71 °

Arlington, Thursday, 22 October

Clear. High 71°, low 49°.

Pressure30.18 inHg

Wind7.3 mph S

Humidity41%

Visibility—

Dew point41°

Fri, 2372° / 55°

72 °

Arlington, Friday, 23 October

Overcast. High 72°, low 55°.

Pressure30.18 inHg

Wind8.1 mph E

Humidity35%

Visibility—

Dew point39°

Sat, 2473° / 56°

73 °

Arlington, Saturday, 24 October

Overcast. High 73°, low 56°.

Pressure30.24 inHg

Wind10.1 mph SE

Humidity38%

Visibility—

Dew point42°

Sun, 2574° / 55°

74 °

Arlington, Sunday, 25 October

Overcast. High 74°, low 55°.

Pressure30.15 inHg

Wind11.7 mph S

Humidity41%

Visibility—

Dew point45°

Mon, 2661° / 43°

0.01

61 °

Arlington, Monday, 26 October

Light rain. High 61°, low 43°.

Pressure30.21 inHg

Wind15.9 mph NW

Humidity53%

Visibility—

Dew point37°

Tue, 2754° / 36°

54 °

Arlington, Tuesday, 27 October

Clear. High 54°, low 36°.

Pressure30.33 inHg

Wind7.6 mph W

Humidity38%

Visibility—

Dew point25°

Wed, 2860° / 43°

60 °

Arlington, Wednesday, 28 October

Overcast. High 60°, low 43°.

Pressure30.21 inHg

Wind11.1 mph S

Humidity33%

Visibility—

Dew point27°

Thu, 2962° / 55°

0.06

62 °

Arlington, Thursday, 29 October

Light rain. High 62°, low 55°.

Pressure29.71 inHg

Wind18.8 mph SW

Humidity80%

Visibility—

Dew point53°

Fri, 3058° / 48°

58 °

Arlington, Friday, 30 October

Overcast. High 58°, low 48°.

Pressure30.00 inHg

Wind17.8 mph NW

Humidity60%

Visibility—

Dew point41°

Sat, 3157° / 46°

57 °

Arlington, Saturday, 31 October

Overcast. High 57°, low 46°.

Pressure29.97 inHg

Wind15.1 mph S

Humidity54%

Visibility—

Dew point39°

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.