As of 12:06 CDT

Weather in Richardson, IL

61°

Richardson, Tuesday, 27 October, 12:06

Clear. Feels like 60°. High 64°, low 50°.

Pressure30.24 inHg

Wind8.1 mph SE

Humidity81%

Visibility6.2 mi

Dew point55°

See detailed hourly forecast

Monthly outlook for Richardson, IL: average high 56.7°, average low 46.6°. That is 2.3° above the climate normal for October. Precipitation is expected on 6 days (about 1.8 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 28 October (71.6°), the coolest 11 November (27.6°).

56.7°/46.6°

Average high / low

+2.3°

Above normal

6 / 4

Wet days / normal

1.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
27 October – 5 November	61.4°	54.2°	+4°
6 November – 15 November	49°	48.5°	+0.3°
16 November – 25 November	at normal	44.8°	—

October records over 66 years

87.1°3 October 2025All-time high

22.1°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — Sycamore (5 mi).

Wed, 2872° / 55°

72 °

Richardson, Wednesday, 28 October

Partly cloudy. High 72°, low 55°.

Pressure30.18 inHg

Wind8.7 mph S

Humidity60%

Visibility6.2 mi

Dew point53°

Thu, 2965° / 48°

0.04

65 °

Richardson, Thursday, 29 October

Light rain. High 65°, low 48°.

Pressure30.09 inHg

Wind8.1 mph W

Humidity77%

Visibility5.2 mi

Dew point56°

Fri, 3063° / 43°

0.06

63 °

Richardson, Friday, 30 October

Light rain. High 63°, low 43°.

Pressure30.30 inHg

Wind6.7 mph SE

Humidity60%

Visibility6.2 mi

Dew point47°

Sat, 3164° / 53°

0.73

64 °

Richardson, Saturday, 31 October

Rain. High 64°, low 53°.

Pressure30.24 inHg

Wind4.8 mph SE

Humidity88%

Visibility6.2 mi

Dew point55°

Sun, 0167° / 52°

67 °

Richardson, Sunday, 1 November

Overcast. High 67°, low 52°.

Pressure30.24 inHg

Wind7.7 mph E

Humidity74%

Visibility—

Dew point56°

Mon, 0258° / 55°

58 °

Richardson, Monday, 2 November

Overcast. High 58°, low 55°.

Pressure29.88 inHg

Wind10.2 mph NE

Humidity88%

Visibility—

Dew point54°

Tue, 0355° / 53°

55 °

Richardson, Tuesday, 3 November

Overcast. High 55°, low 53°.

Pressure30.06 inHg

Wind15.7 mph E

Humidity81%

Visibility—

Dew point49°

Wed, 0452° / 49°

0.34

52 °

Richardson, Wednesday, 4 November

Rain. High 52°, low 49°.

Pressure30.00 inHg

Wind15.3 mph NE

Humidity78%

Visibility—

Dew point45°

Thu, 0553° / 51°

0.4

53 °

Richardson, Thursday, 5 November

Light rain. High 53°, low 51°.

Pressure29.71 inHg

Wind16.4 mph NE

Humidity96%

Visibility—

Dew point52°

Fri, 0650° / 46°

50 °

Richardson, Friday, 6 November

Overcast. High 50°, low 46°.

Pressure29.85 inHg

Wind16.2 mph N

Humidity83%

Visibility—

Dew point44°

Sat, 0753° / 41°

53 °

Richardson, Saturday, 7 November

Overcast. High 53°, low 41°.

Pressure29.94 inHg

Wind9.1 mph N

Humidity60%

Visibility—

Dew point37°

Sun, 0855° / 41°

55 °

Richardson, Sunday, 8 November

Overcast. High 55°, low 41°.

Pressure30.03 inHg

Wind9 mph S

Humidity56%

Visibility—

Dew point37°

Mon, 0950° / 46°

0.22

50 °

Richardson, Monday, 9 November

Rain. High 50°, low 46°.

Pressure29.74 inHg

Wind16.2 mph NW

Humidity93%

Visibility—

Dew point47°

Tue, 1045° / 36°

45 °

Richardson, Tuesday, 10 November

Overcast. High 45°, low 36°.

Pressure30.00 inHg

Wind16.9 mph NW

Humidity63%

Visibility—

Dew point29°

Wed, 1140° / 28°

40 °

Richardson, Wednesday, 11 November

Overcast. High 40°, low 28°.

Pressure30.30 inHg

Wind9.2 mph N

Humidity46%

Visibility—

Dew point19°

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

Thu, 1246° / 32°

0.06

46 °

Richardson, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.06 in

Chance of precipitation23%

Record high65° (1964)

Record low1° (2019)

Fri, 1346° / 32°

0.04

46 °

Richardson, Friday, 13 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.04 in

Chance of precipitation20%

Record high70° (1999)

Record low1° (2019)

Sat, 1447° / 32°

0.07

47 °

Richardson, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high47°

Average low32°

Average precipitation0.07 in

Chance of precipitation30%

Record high69° (1971)

Record low13° (1986)

Sun, 1546° / 33°

0.08

46 °

Richardson, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.08 in

Chance of precipitation23%

Record high69° (2025)

Record low14° (2019)

Mon, 1647° / 33°

0.05

47 °

Richardson, Monday, 16 November

Climate normal for this date — 60-year average.

Average high47°

Average low33°

Average precipitation0.05 in

Chance of precipitation15%

Record high63° (1988)

Record low18° (1997)

Tue, 1747° / 33°

0.1

47 °

Richardson, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high47°

Average low33°

Average precipitation0.1 in

Chance of precipitation28%

Record high71° (2016)

Record low14° (2014)

Wed, 1847° / 34°

0.1

47 °

Richardson, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.1 in

Chance of precipitation25%

Record high68° (1999)

Record low11° (2014)

Thu, 1946° / 33°

0.07

46 °

Richardson, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.07 in

Chance of precipitation28%

Record high64° (1983)

Record low11° (2018)

Fri, 2045° / 32°

0.08

45 °

Richardson, Friday, 20 November

Climate normal for this date — 60-year average.

Average high45°

Average low32°

Average precipitation0.08 in

Chance of precipitation35%

Record high63° (2003)

Record low13° (2022)

Sat, 2144° / 30°

0.1

44 °

Richardson, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high44°

Average low30°

Average precipitation0.1 in

Chance of precipitation23%

Record high66° (1990)

Record low8° (1964)

Sun, 2244° / 29°

0.03

44 °

Richardson, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high44°

Average low29°

Average precipitation0.03 in

Chance of precipitation22%

Record high67° (2010)

Record low1° (2015)

Mon, 2344° / 31°

0.07

44 °

Richardson, Monday, 23 November

Climate normal for this date — 60-year average.

Average high44°

Average low31°

Average precipitation0.07 in

Chance of precipitation28%

Record high64° (2003)

Record low11° (1970)

Tue, 2442° / 29°

0.08

42 °

Richardson, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high42°

Average low29°

Average precipitation0.08 in

Chance of precipitation30%

Record high65° (1966)

Record low12° (1970)

Wed, 2542° / 30°

0.08

42 °

Richardson, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high42°

Average low30°

Average precipitation0.08 in

Chance of precipitation32%

Record high60° (1966)

Record low11° (1977)

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 Richardson, 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 Richardson, 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.