As of 06:46 CDT

Weather in Plano, IL

54°

Plano, Friday, 9 October, 06:46

Overcast. Feels like 52°. High 76°, low 52°.

Pressure30.12 inHg

Wind3.4 mph SE

Humidity79%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for Plano, IL: average high 67.3°, average low 50.1°. That is 3.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (82.7°), the coolest 18 October (37.5°).

67.3°/50.1°

Average high / low

+3.4°

Above normal

4 / 5

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	68.9°	62.4°	+3.6°
19 October – 28 October	64.6°	58.2°	+3.6°
29 October – 7 November	at normal	54.2°	—

October records over 66 years

87.6°3 October 2025All-time high

21.9°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — Boulder Hill (10 mi).

Sat, 1079° / 58°

79 °

Plano, Saturday, 10 October

Overcast. High 79°, low 58°.

Pressure30.09 inHg

Wind8.5 mph S

Humidity53%

Visibility6.2 mi

Dew point55°

Sun, 1172° / 56°

72 °

Plano, Sunday, 11 October

Mostly clear. High 72°, low 56°.

Pressure29.94 inHg

Wind2.4 mph E

Humidity69%

Visibility6.2 mi

Dew point57°

Mon, 1283° / 58°

0.01

83 °

Plano, Monday, 12 October

Light rain. High 83°, low 58°.

Pressure29.80 inHg

Wind10.9 mph SW

Humidity56%

Visibility6.2 mi

Dew point62°

Tue, 1380° / 63°

0.08

80 °

Plano, Tuesday, 13 October

Light rain. High 80°, low 63°.

Pressure29.80 inHg

Wind11.6 mph NE

Humidity69%

Visibility—

Dew point66°

Wed, 1467° / 59°

0.69

67 °

Plano, Wednesday, 14 October

Rain. High 67°, low 59°.

Pressure29.88 inHg

Wind10.3 mph E

Humidity93%

Visibility—

Dew point64°

Thu, 1570° / 56°

0.66

70 °

Plano, Thursday, 15 October

Rain. High 70°, low 56°.

Pressure29.80 inHg

Wind19.7 mph SW

Humidity94%

Visibility—

Dew point63°

Fri, 1660° / 45°

60 °

Plano, Friday, 16 October

Partly cloudy. High 60°, low 45°.

Pressure29.97 inHg

Wind24 mph W

Humidity49%

Visibility—

Dew point33°

Sat, 1748° / 42°

48 °

Plano, Saturday, 17 October

Overcast. High 48°, low 42°.

Pressure30.30 inHg

Wind14.9 mph W

Humidity59%

Visibility—

Dew point33°

Sun, 1854° / 37°

54 °

Plano, Sunday, 18 October

Mostly clear. High 54°, low 37°.

Pressure30.33 inHg

Wind7.1 mph SW

Humidity48%

Visibility—

Dew point31°

Mon, 1960° / 42°

60 °

Plano, Monday, 19 October

Overcast. High 60°, low 42°.

Pressure30.36 inHg

Wind5.4 mph S

Humidity46%

Visibility—

Dew point35°

Tue, 2063° / 44°

63 °

Plano, Tuesday, 20 October

Clear. High 63°, low 44°.

Pressure30.39 inHg

Wind7.6 mph SE

Humidity43%

Visibility—

Dew point36°

Wed, 2165° / 45°

65 °

Plano, Wednesday, 21 October

Clear. High 65°, low 45°.

Pressure30.30 inHg

Wind6.1 mph SE

Humidity44%

Visibility—

Dew point39°

Thu, 2267° / 48°

67 °

Plano, Thursday, 22 October

Clear. High 67°, low 48°.

Pressure30.27 inHg

Wind7.5 mph NE

Humidity43%

Visibility—

Dew point40°

Fri, 2367° / 48°

67 °

Plano, Friday, 23 October

Clear. High 67°, low 48°.

Pressure30.21 inHg

Wind7.7 mph NE

Humidity50%

Visibility—

Dew point44°

Sat, 2467° / 49°

67 °

Plano, Saturday, 24 October

Clear. High 67°, low 49°.

Pressure30.12 inHg

Wind7.3 mph E

Humidity47%

Visibility—

Dew point43°

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

Sun, 2557° / 43°

0.11

57 °

Plano, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.11 in

Chance of precipitation28%

Record high75° (1989)

Record low28° (2006)

Mon, 2656° / 42°

0.1

56 °

Plano, Monday, 26 October

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.1 in

Chance of precipitation27%

Record high79° (1963)

Record low23° (1962)

Tue, 2756° / 42°

0.09

56 °

Plano, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.09 in

Chance of precipitation30%

Record high75° (2014)

Record low29° (1980)

Wed, 2856° / 41°

0.05

56 °

Plano, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.05 in

Chance of precipitation20%

Record high74° (1999)

Record low25° (1976)

Thu, 2956° / 41°

0.06

56 °

Plano, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.06 in

Chance of precipitation20%

Record high79° (2024)

Record low24° (1980)

Fri, 3058° / 42°

0.11

58 °

Plano, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.11 in

Chance of precipitation27%

Record high78° (1971)

Record low23° (1988)

Sat, 3156° / 43°

0.13

56 °

Plano, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°

Average low43°

Average precipitation0.13 in

Chance of precipitation37%

Record high74° (1974)

Record low27° (2019)

Sun, 0155° / 41°

0.17

55 °

Plano, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.17 in

Chance of precipitation35%

Record high74° (2016)

Record low17° (2019)

Mon, 0254° / 40°

0.11

54 °

Plano, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.11 in

Chance of precipitation35%

Record high75° (1961)

Record low23° (1991)

Tue, 0353° / 38°

0.07

53 °

Plano, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.07 in

Chance of precipitation27%

Record high73° (1987)

Record low17° (1991)

Wed, 0453° / 40°

0.09

53 °

Plano, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.09 in

Chance of precipitation23%

Record high71° (2015)

Record low16° (1991)

Thu, 0553° / 39°

0.11

53 °

Plano, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.11 in

Chance of precipitation28%

Record high75° (1978)

Record low18° (1991)

Fri, 0653° / 37°

0.07

53 °

Plano, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°

Average low37°

Average precipitation0.07 in

Chance of precipitation27%

Record high72° (1975)

Record low23° (1991)

Sat, 0752° / 37°

0.05

52 °

Plano, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°

Average low37°

Average precipitation0.05 in

Chance of precipitation20%

Record high69° (2020)

Record low16° (1991)

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 Plano, 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 Plano, 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.