As of 08:47 CDT

Weather in Countryside, IL

42°

Countryside, Saturday, 17 October, 08:47

Clear. Feels like 37°. High 54°, low 37°.

Pressure30.53 inHg

Wind8.1 mph NW

Humidity76%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Monthly outlook for Countryside, IL: average high 66.2°, average low 50.7°. That is 4.7° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 27 October (75.2°), the coolest 17 October (37.4°).

66.2°/50.7°

Average high / low

+4.7°

Above normal

4 / 5

Wet days / normal

0.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
17 October – 26 October	65.5°	58.7°	+3.8°
27 October – 5 November	67.3°	54.9°	+6.9°
6 November – 15 November	at normal	49.4°	—

October records over 66 years

87.3°3 October 2025All-time high

24.8°26 October 1962All-time low

Climate normals and records are computed from the nearest reference point — La Grange (2 mi).

Sun, 1860° / 42°

60 °

Countryside, Sunday, 18 October

Clear. High 60°, low 42°.

Pressure30.45 inHg

Wind11 mph SW

Humidity57%

Visibility6.2 mi

Dew point41°

Mon, 1963° / 42°

63 °

Countryside, Monday, 19 October

Partly cloudy. High 63°, low 42°.

Pressure30.42 inHg

Wind2.9 mph SW

Humidity61%

Visibility6.2 mi

Dew point46°

Tue, 2065° / 46°

65 °

Countryside, Tuesday, 20 October

Clear. High 65°, low 46°.

Pressure30.39 inHg

Wind3.2 mph SE

Humidity54%

Visibility6.2 mi

Dew point46°

Wed, 2166° / 47°

66 °

Countryside, Wednesday, 21 October

Clear. High 66°, low 47°.

Pressure30.27 inHg

Wind4.7 mph SE

Humidity55%

Visibility—

Dew point47°

Thu, 2267° / 50°

67 °

Countryside, Thursday, 22 October

Clear. High 67°, low 50°.

Pressure30.27 inHg

Wind5.7 mph NE

Humidity58%

Visibility—

Dew point49°

Fri, 2372° / 55°

72 °

Countryside, Friday, 23 October

Clear. High 72°, low 55°.

Pressure30.18 inHg

Wind6.6 mph SE

Humidity34%

Visibility—

Dew point39°

Sat, 2471° / 58°

71 °

Countryside, Saturday, 24 October

Overcast. High 71°, low 58°.

Pressure30.15 inHg

Wind11.1 mph S

Humidity31%

Visibility—

Dew point36°

Sun, 2572° / 58°

72 °

Countryside, Sunday, 25 October

Overcast. High 72°, low 58°.

Pressure30.00 inHg

Wind12.6 mph SW

Humidity51%

Visibility—

Dew point51°

Mon, 2666° / 52°

66 °

Countryside, Monday, 26 October

Clear. High 66°, low 52°.

Pressure30.21 inHg

Wind6.3 mph NW

Humidity43%

Visibility—

Dew point39°

Tue, 2775° / 56°

75 °

Countryside, Tuesday, 27 October

Overcast. High 75°, low 56°.

Pressure30.00 inHg

Wind12.9 mph S

Humidity41%

Visibility—

Dew point48°

Wed, 2868° / 61°

0.15

68 °

Countryside, Wednesday, 28 October

Light rain. High 68°, low 61°.

Pressure29.91 inHg

Wind13.4 mph SW

Humidity48%

Visibility—

Dew point45°

Thu, 2964° / 53°

0.06

64 °

Countryside, Thursday, 29 October

Light rain. High 64°, low 53°.

Pressure30.09 inHg

Wind12.9 mph W

Humidity28%

Visibility—

Dew point28°

Fri, 3068° / 56°

0.56

68 °

Countryside, Friday, 30 October

Rain. High 68°, low 56°.

Pressure29.77 inHg

Wind14.4 mph S

Humidity97%

Visibility—

Dew point60°

Sat, 3171° / 52°

0.17

71 °

Countryside, Saturday, 31 October

Light rain. High 71°, low 52°.

Pressure29.62 inHg

Wind20 mph SW

Humidity42%

Visibility—

Dew point40°

Sun, 0158° / 47°

58 °

Countryside, Sunday, 1 November

Overcast. High 58°, low 47°.

Pressure30.18 inHg

Wind8.3 mph W

Humidity27%

Visibility—

Dew point22°

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

Mon, 0254° / 41°

0.12

54 °

Countryside, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.12 in

Chance of precipitation40%

Record high74° (1961)

Record low24° (1991)

Tue, 0353° / 40°

0.07

53 °

Countryside, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.07 in

Chance of precipitation23%

Record high73° (1987)

Record low18° (1991)

Wed, 0453° / 42°

0.09

53 °

Countryside, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.09 in

Chance of precipitation27%

Record high71° (2015)

Record low17° (1991)

Thu, 0553° / 40°

0.12

53 °

Countryside, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.12 in

Chance of precipitation32%

Record high75° (1978)

Record low19° (1991)

Fri, 0653° / 38°

0.07

53 °

Countryside, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.07 in

Chance of precipitation30%

Record high72° (1975)

Record low24° (1991)

Sat, 0752° / 38°

0.06

52 °

Countryside, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°

Average low38°

Average precipitation0.06 in

Chance of precipitation22%

Record high69° (2020)

Record low19° (1991)

Sun, 0851° / 38°

0.07

51 °

Countryside, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°

Average low38°

Average precipitation0.07 in

Chance of precipitation20%

Record high74° (2020)

Record low15° (1991)

Mon, 0952° / 39°

0.13

52 °

Countryside, Monday, 9 November

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.13 in

Chance of precipitation35%

Record high72° (1999)

Record low19° (1991)

Tue, 1050° / 38°

0.13

50 °

Countryside, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high50°

Average low38°

Average precipitation0.13 in

Chance of precipitation40%

Record high72° (2020)

Record low17° (2017)

Wed, 1148° / 35°

0.08

48 °

Countryside, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high48°

Average low35°

Average precipitation0.08 in

Chance of precipitation30%

Record high70° (1964)

Record low16° (2019)

Thu, 1246° / 34°

0.06

46 °

Countryside, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high46°

Average low34°

Average precipitation0.06 in

Chance of precipitation23%

Record high67° (1964)

Record low5° (2019)

Fri, 1347° / 34°

0.06

47 °

Countryside, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.06 in

Chance of precipitation20%

Record high69° (1999)

Record low2° (2019)

Sat, 1448° / 34°

0.07

48 °

Countryside, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°

Average low34°

Average precipitation0.07 in

Chance of precipitation33%

Record high69° (1971)

Record low14° (1986)

Sun, 1547° / 35°

0.1

47 °

Countryside, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high47°

Average low35°

Average precipitation0.1 in

Chance of precipitation32%

Record high68° (2025)

Record low20° (1982)

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 Countryside, 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 Countryside, 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.