As of 02:42 CST

Weather in Round Lake, IL

63°

Round Lake, Tuesday, 3 November, 02:42

Overcast. Feels like 63°. High 70°, low 62°.

Pressure29.88 inHg

Wind11 mph N

Humidity93%

Visibility6.2 mi

Dew point61°

See detailed hourly forecast

Monthly outlook for Round Lake, IL: average high 53.5°, average low 41.3°. That is 3° above the climate normal for November. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 3 November (69.5°), the coolest 14 November (31.2°).

53.5°/41.3°

Average high / low

+3°

Above normal

3 / 4

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
3 November – 12 November	55.5°	49.4°	+3.4°
13 November – 22 November	50.1°	45°	+2.8°
23 November – 2 December	at normal	40.4°	—

November records over 66 years

73°8 November 2020All-time high

1.6°13 November 2019All-time low

Climate normals and records are computed from the nearest reference point — Round Lake Beach (3 mi).

Wed, 0463° / 54°

0.24

63 °

Round Lake, Wednesday, 4 November

Rain. High 63°, low 54°.

Pressure29.59 inHg

Wind15.4 mph SW

Humidity75%

Visibility6.2 mi

Dew point54°

Thu, 0554° / 48°

0.04

54 °

Round Lake, Thursday, 5 November

Light rain. High 54°, low 48°.

Pressure29.71 inHg

Wind14.9 mph SW

Humidity75%

Visibility6.2 mi

Dew point46°

Fri, 0647° / 42°

0.04

47 °

Round Lake, Friday, 6 November

Light rain. High 47°, low 42°.

Pressure30.06 inHg

Wind11.3 mph N

Humidity64%

Visibility6.2 mi

Dew point36°

Sat, 0747° / 36°

47 °

Round Lake, Saturday, 7 November

Clear. High 47°, low 36°.

Pressure30.15 inHg

Wind9 mph W

Humidity56%

Visibility—

Dew point30°

Sun, 0857° / 41°

57 °

Round Lake, Sunday, 8 November

Partly cloudy. High 57°, low 41°.

Pressure30.06 inHg

Wind9.3 mph W

Humidity62%

Visibility—

Dew point41°

Mon, 0955° / 36°

55 °

Round Lake, Monday, 9 November

Clear. High 55°, low 36°.

Pressure30.06 inHg

Wind6.7 mph SW

Humidity43%

Visibility—

Dew point29°

Tue, 1057° / 45°

57 °

Round Lake, Tuesday, 10 November

Overcast. High 57°, low 45°.

Pressure30.06 inHg

Wind8.2 mph N

Humidity42%

Visibility—

Dew point33°

Wed, 1157° / 42°

57 °

Round Lake, Wednesday, 11 November

Overcast. High 57°, low 42°.

Pressure29.97 inHg

Wind6.1 mph N

Humidity29%

Visibility—

Dew point22°

Thu, 1247° / 37°

47 °

Round Lake, Thursday, 12 November

Overcast. High 47°, low 37°.

Pressure30.12 inHg

Wind8.8 mph N

Humidity56%

Visibility—

Dew point31°

Fri, 1344° / 36°

0.02

44 °

Round Lake, Friday, 13 November

Light rain. High 44°, low 36°.

Pressure30.24 inHg

Wind10.4 mph N

Humidity68%

Visibility—

Dew point33°

Sat, 1447° / 31°

47 °

Round Lake, Saturday, 14 November

Clear. High 47°, low 31°.

Pressure30.33 inHg

Wind6.6 mph NW

Humidity46%

Visibility—

Dew point24°

Sun, 1550° / 33°

50 °

Round Lake, Sunday, 15 November

Clear. High 50°, low 33°.

Pressure30.27 inHg

Wind10.9 mph SW

Humidity42%

Visibility—

Dew point26°

Mon, 1653° / 36°

53 °

Round Lake, Monday, 16 November

Clear. High 53°, low 36°.

Pressure30.18 inHg

Wind10.9 mph SW

Humidity43%

Visibility—

Dew point29°

Tue, 1751° / 39°

0.04

51 °

Round Lake, Tuesday, 17 November

Light rain. High 51°, low 39°.

Pressure29.94 inHg

Wind12.1 mph S

Humidity44%

Visibility—

Dew point28°

Wed, 1856° / 43°

0.02

56 °

Round Lake, Wednesday, 18 November

Light rain. High 56°, low 43°.

Pressure29.83 inHg

Wind14.7 mph SW

Humidity53%

Visibility—

Dew point37°

From day 17 onward the outlook is built from 60-year climate statistics

Thu, 1946° / 35°

0.07

46 °

Round Lake, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high46°

Average low35°

Average precipitation0.07 in

Chance of precipitation32%

Record high63° (1983)

Record low15° (2018)

Fri, 2044° / 33°

0.07

44 °

Round Lake, Friday, 20 November

Climate normal for this date — 60-year average.

Average high44°

Average low33°

Average precipitation0.07 in

Chance of precipitation35%

Record high61° (2003)

Record low13° (2022)

Sat, 2143° / 32°

0.1

43 °

Round Lake, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high43°

Average low32°

Average precipitation0.1 in

Chance of precipitation25%

Record high64° (1990)

Record low11° (1964)

Sun, 2243° / 31°

0.04

43 °

Round Lake, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high43°

Average low31°

Average precipitation0.04 in

Chance of precipitation18%

Record high62° (2010)

Record low14° (2015)

Mon, 2343° / 32°

0.07

43 °

Round Lake, Monday, 23 November

Climate normal for this date — 60-year average.

Average high43°

Average low32°

Average precipitation0.07 in

Chance of precipitation30%

Record high63° (2003)

Record low12° (1970)

Tue, 2442° / 30°

0.08

42 °

Round Lake, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high42°

Average low30°

Average precipitation0.08 in

Chance of precipitation28%

Record high60° (1966)

Record low14° (2013)

Wed, 2542° / 32°

0.09

42 °

Round Lake, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high42°

Average low32°

Average precipitation0.09 in

Chance of precipitation33%

Record high59° (1966)

Record low16° (2005)

Thu, 2642° / 31°

0.12

42 °

Round Lake, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high42°

Average low31°

Average precipitation0.12 in

Chance of precipitation45%

Record high61° (1990)

Record low6° (1977)

Fri, 2741° / 31°

0.21

41 °

Round Lake, Friday, 27 November

Climate normal for this date — 60-year average.

Average high41°

Average low31°

Average precipitation0.21 in

Chance of precipitation50%

Record high63° (1990)

Record low15° (1977)

Sat, 2839° / 28°

0.12

39 °

Round Lake, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high39°

Average low28°

Average precipitation0.12 in

Chance of precipitation35%

Record high62° (1990)

Record low4° (2018)

Sun, 2940° / 28°

0.08

40 °

Round Lake, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high40°

Average low28°

Average precipitation0.08 in

Chance of precipitation37%

Record high63° (1998)

Record low7° (1976)

Mon, 3040° / 29°

0.07

40 °

Round Lake, Monday, 30 November

Climate normal for this date — 60-year average.

Average high40°

Average low29°

Average precipitation0.07 in

Chance of precipitation32%

Record high64° (1998)

Record low10° (1964)

Tue, 0138° / 27°

0.14

38 °

Round Lake, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high38°

Average low27°

Average precipitation0.14 in

Chance of precipitation43%

Record high61° (1970)

Record low11° (2025)

Wed, 0238° / 28°

0.07

38 °

Round Lake, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high38°

Average low28°

Average precipitation0.07 in

Chance of precipitation32%

Record high64° (1982)

Record low5° (1976)

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, 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, 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.