As of 21:50 CDT

Weather in Arlington, IL

58°

Arlington, Thursday, 15 October, 21:50

Overcast. Feels like 57°. High 64°, low 58°.

Pressure29.83 inHg

Wind17.4 mph W

Humidity92%

Visibility6.2 mi

Dew point55°

See detailed hourly forecast

Fri, 1658° / 45°

0.02

58 °

Arlington, Friday, 16 October

Light rain. High 58°, low 45°.

Pressure30.12 inHg

Wind18 mph NW

Humidity70%

Visibility6.2 mi

Dew point42°

Sat, 1756° / 36°

56 °

Arlington, Saturday, 17 October

Clear. High 56°, low 36°.

Pressure30.56 inHg

Wind4.5 mph SW

Humidity46%

Visibility6.2 mi

Dew point29°

Sun, 1861° / 41°

61 °

Arlington, Sunday, 18 October

Clear. High 61°, low 41°.

Pressure30.47 inHg

Wind12.8 mph SW

Humidity50%

Visibility6.2 mi

Dew point39°

Mon, 1964° / 42°

64 °

Arlington, Monday, 19 October

Clear. High 64°, low 42°.

Pressure30.39 inHg

Wind6.5 mph S

Humidity54%

Visibility6.2 mi

Dew point42°

Tue, 2066° / 43°

66 °

Arlington, Tuesday, 20 October

Clear. High 66°, low 43°.

Pressure30.33 inHg

Wind6.8 mph SE

Humidity43%

Visibility—

Dew point39°

Wed, 2168° / 46°

68 °

Arlington, Wednesday, 21 October

Mostly clear. High 68°, low 46°.

Pressure30.30 inHg

Wind6.3 mph SE

Humidity45%

Visibility—

Dew point42°

Thu, 2272° / 52°

72 °

Arlington, Thursday, 22 October

Overcast. High 72°, low 52°.

Pressure30.24 inHg

Wind8 mph S

Humidity38%

Visibility—

Dew point40°

Fri, 2372° / 55°

72 °

Arlington, Friday, 23 October

Partly cloudy. High 72°, low 55°.

Pressure30.18 inHg

Wind10.2 mph SE

Humidity38%

Visibility—

Dew point42°

Sat, 2470° / 55°

70 °

Arlington, Saturday, 24 October

Overcast. High 70°, low 55°.

Pressure30.21 inHg

Wind9.4 mph S

Humidity41%

Visibility—

Dew point42°

Sun, 2569° / 54°

69 °

Arlington, Sunday, 25 October

Partly cloudy. High 69°, low 54°.

Pressure30.27 inHg

Wind7.5 mph NE

Humidity39%

Visibility—

Dew point40°

Mon, 2667° / 55°

67 °

Arlington, Monday, 26 October

Overcast. High 67°, low 55°.

Pressure30.03 inHg

Wind13.5 mph SE

Humidity54%

Visibility—

Dew point46°

Tue, 2759° / 47°

59 °

Arlington, Tuesday, 27 October

Overcast. High 59°, low 47°.

Pressure30.03 inHg

Wind11.9 mph W

Humidity65%

Visibility—

Dew point44°

Wed, 2854° / 47°

1.06

54 °

Arlington, Wednesday, 28 October

Heavy rain. High 54°, low 47°.

Pressure29.65 inHg

Wind14.8 mph SE

Humidity95%

Visibility—

Dew point48°

Thu, 2957° / 48°

0.13

57 °

Arlington, Thursday, 29 October

Light rain. High 57°, low 48°.

Pressure29.85 inHg

Wind18.5 mph NW

Humidity73%

Visibility—

Dew point47°

Fri, 3059° / 45°

59 °

Arlington, Friday, 30 October

Clear. High 59°, low 45°.

Pressure30.03 inHg

Wind14 mph W

Humidity41%

Visibility—

Dew point34°

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.