As of 09:22 CDT

Weather in Plano, IL

57°

Plano, Friday, 9 October, 09:22

Overcast. Feels like 56°. High 77°, low 52°.

Pressure30.12 inHg

Wind4.6 mph SE

Humidity75%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Monthly outlook for Plano, IL: average high 64°, average low 48.2°. That is 1.5° above the climate normal for October. Precipitation is expected on 3 days (about 3.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (81.8°), the coolest 18 October (32.8°).

64°/48.2°

Average high / low

+1.5°

Above normal

3 / 5

Wet days / normal

3.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	67.5°	62.4°	+2.8°
19 October – 28 October	58.1°	58.2°	-0°
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°.

Pressure30.06 inHg

Wind8.4 mph S

Humidity55%

Visibility6.2 mi

Dew point55°

Sun, 1175° / 55°

75 °

Plano, Sunday, 11 October

Clear. High 75°, low 55°.

Pressure29.91 inHg

Wind1.7 mph E

Humidity66%

Visibility6.2 mi

Dew point58°

Mon, 1282° / 61°

82 °

Plano, Monday, 12 October

Clear. High 82°, low 61°.

Pressure29.80 inHg

Wind12.7 mph SW

Humidity56%

Visibility6.2 mi

Dew point62°

Tue, 1375° / 63°

0.01

75 °

Plano, Tuesday, 13 October

Light rain. High 75°, low 63°.

Pressure29.85 inHg

Wind9.6 mph NW

Humidity75%

Visibility—

Dew point64°

Wed, 1465° / 57°

65 °

Plano, Wednesday, 14 October

Overcast. High 65°, low 57°.

Pressure30.06 inHg

Wind10.4 mph NE

Humidity65%

Visibility—

Dew point52°

Thu, 1558° / 53°

0.37

58 °

Plano, Thursday, 15 October

Rain. High 58°, low 53°.

Pressure30.03 inHg

Wind11.5 mph S

Humidity78%

Visibility—

Dew point47°

Fri, 1667° / 42°

1.57

67 °

Plano, Friday, 16 October

Heavy rain. High 67°, low 42°.

Pressure29.85 inHg

Wind23.7 mph W

Humidity60%

Visibility—

Dew point39°

Sat, 1746° / 36°

46 °

Plano, Saturday, 17 October

Partly cloudy. High 46°, low 36°.

Pressure30.36 inHg

Wind22.5 mph W

Humidity49%

Visibility—

Dew point25°

Sun, 1851° / 33°

51 °

Plano, Sunday, 18 October

Overcast. High 51°, low 33°.

Pressure30.33 inHg

Wind11.1 mph S

Humidity44%

Visibility—

Dew point26°

Mon, 1960° / 38°

60 °

Plano, Monday, 19 October

Overcast. High 60°, low 38°.

Pressure30.21 inHg

Wind11.7 mph SW

Humidity47%

Visibility—

Dew point35°

Tue, 2065° / 45°

65 °

Plano, Tuesday, 20 October

Clear. High 65°, low 45°.

Pressure30.33 inHg

Wind7.2 mph S

Humidity49%

Visibility—

Dew point40°

Wed, 2167° / 50°

67 °

Plano, Wednesday, 21 October

Overcast. High 67°, low 50°.

Pressure30.24 inHg

Wind11.3 mph SW

Humidity45%

Visibility—

Dew point42°

Thu, 2258° / 51°

1.39

58 °

Plano, Thursday, 22 October

Heavy rain. High 58°, low 51°.

Pressure30.00 inHg

Wind14.2 mph SW

Humidity95%

Visibility—

Dew point51°

Fri, 2354° / 41°

54 °

Plano, Friday, 23 October

Overcast. High 54°, low 41°.

Pressure30.00 inHg

Wind18.5 mph W

Humidity67%

Visibility—

Dew point35°

Sat, 2446° / 35°

46 °

Plano, Saturday, 24 October

Clear. High 46°, low 35°.

Pressure30.21 inHg

Wind14.2 mph N

Humidity53%

Visibility—

Dew point27°

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.