EN
English Español

As of 08:45 CDT

Weather in Round Lake Beach, IL

72°Current weather

Round Lake Beach, Sunday, 9 August, 08:45

Clear. Feels like 72°. High 84°, low 62°.

Pressure30.00 inHg
Wind3 mph NE
Humidity83%
Visibility6.2 mi
Dew point66°
Mon, 1088° / 71°0.44Rain
88 °Rain

Round Lake Beach, Monday, 10 August

Rain. High 88°, low 71°.

Pressure29.91 inHg
Wind3.8 mph E
Humidity67%
Visibility6.2 mi
Dew point71°
Tue, 1184° / 65°1.23Heavy rain
84 °Heavy rain

Round Lake Beach, Tuesday, 11 August

Heavy rain. High 84°, low 65°.

Pressure29.83 inHg
Wind5.7 mph S
Humidity61%
Visibility6.2 mi
Dew point69°
Wed, 1284° / 63°0Clear
84 °Clear

Round Lake Beach, Wednesday, 12 August

Clear. High 84°, low 63°.

Pressure29.85 inHg
Wind4.8 mph NW
Humidity64%
Visibility6.2 mi
Dew point67°
Thu, 1373° / 60°0.02Light rain
73 °Light rain

Round Lake Beach, Thursday, 13 August

Light rain. High 73°, low 60°.

Pressure29.97 inHg
Wind7.8 mph E
Humidity72%
Visibility—
Dew point61°
Fri, 1472° / 59°0Overcast
72 °Overcast

Round Lake Beach, Friday, 14 August

Overcast. High 72°, low 59°.

Pressure30.18 inHg
Wind13.2 mph E
Humidity54%
Visibility—
Dew point53°
Sat, 1574° / 60°0.06Light rain
74 °Light rain

Round Lake Beach, Saturday, 15 August

Light rain. High 74°, low 60°.

Pressure30.21 inHg
Wind14.9 mph SE
Humidity52%
Visibility—
Dew point54°
Sun, 1674° / 64°0.13Light rain
74 °Light rain

Round Lake Beach, Sunday, 16 August

Light rain. High 74°, low 64°.

Pressure30.00 inHg
Wind11.8 mph NW
Humidity82%
Visibility—
Dew point65°
Mon, 1777° / 62°0Overcast
77 °Overcast

Round Lake Beach, Monday, 17 August

Overcast. High 77°, low 62°.

Pressure30.09 inHg
Wind7.2 mph N
Humidity57%
Visibility—
Dew point57°
Tue, 1878° / 59°0Overcast
78 °Overcast

Round Lake Beach, Tuesday, 18 August

Overcast. High 78°, low 59°.

Pressure29.91 inHg
Wind8.2 mph SW
Humidity77%
Visibility—
Dew point58°
Wed, 1974° / 61°0.03Light rain
74 °Light rain

Round Lake Beach, Wednesday, 19 August

Light rain. High 74°, low 61°.

Pressure29.83 inHg
Wind13.4 mph NW
Humidity68%
Visibility—
Dew point61°
Thu, 2074° / 58°0.06Light rain
74 °Light rain

Round Lake Beach, Thursday, 20 August

Light rain. High 74°, low 58°.

Pressure29.94 inHg
Wind7.3 mph E
Humidity67%
Visibility—
Dew point60°
Fri, 2179° / 60°0.06Light rain
79 °Light rain

Round Lake Beach, Friday, 21 August

Light rain. High 79°, low 60°.

Pressure29.77 inHg
Wind12.2 mph S
Humidity67%
Visibility—
Dew point60°
Sat, 2280° / 61°0.02Light rain
80 °Light rain

Round Lake Beach, Saturday, 22 August

Light rain. High 80°, low 61°.

Pressure29.80 inHg
Wind15.5 mph NW
Humidity49%
Visibility—
Dew point57°
Sun, 2378° / 54°0Clear
78 °Clear

Round Lake Beach, Sunday, 23 August

Clear. High 78°, low 54°.

Pressure30.15 inHg
Wind9.4 mph NW
Humidity47%
Visibility—
Dew point51°
Mon, 2480° / 59°0Clear
80 °Clear

Round Lake Beach, Monday, 24 August

Clear. High 80°, low 59°.

Pressure30.18 inHg
Wind9.3 mph W
Humidity57%
Visibility—
Dew point59°

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 Round Lake Beach, 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 Round Lake Beach, 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.