As of 13:52 CDT

Weather in Quincy, IL

89°

Quincy, Tuesday, 13 October, 13:52

Clear. Feels like 98°. High 89°, low 67°.

Pressure29.85 inHg

Wind1 mph SW

Humidity60%

Visibility6.2 mi

Dew point73°

See detailed hourly forecast

Monthly outlook for Quincy, IL: average high 66°, average low 53°. That is 1.8° above the climate normal for October. Precipitation is expected on 7 days (about 2.7 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 13 October (89.2°), the coolest 27 October (39.6°).

66°/53°

Average high / low

+1.8°

Above normal

7 / 4

Wet days / normal

2.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	69.3°	64.1°	+2.9°
23 October – 1 November	60.6°	60°	+0.3°
2 November – 11 November	at normal	54.9°	—

October records over 66 years

90.7°10 October 1963All-time high

26.2°29 October 1980All-time low

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

Wed, 1477° / 63°

0.09

77 °

Quincy, Wednesday, 14 October

Light rain. High 77°, low 63°.

Pressure30.06 inHg

Wind5.9 mph NE

Humidity70%

Visibility6.2 mi

Dew point62°

Thu, 1577° / 61°

1.19

77 °

Quincy, Thursday, 15 October

Heavy rain. High 77°, low 61°.

Pressure29.91 inHg

Wind11.1 mph SW

Humidity96%

Visibility2.8 mi

Dew point71°

Fri, 1660° / 49°

60 °

Quincy, Friday, 16 October

Overcast. High 60°, low 49°.

Pressure30.33 inHg

Wind20.6 mph NW

Humidity54%

Visibility6.2 mi

Dew point38°

Sat, 1758° / 41°

58 °

Quincy, Saturday, 17 October

Clear. High 58°, low 41°.

Pressure30.53 inHg

Wind3.2 mph S

Humidity49%

Visibility6.2 mi

Dew point35°

Sun, 1865° / 46°

65 °

Quincy, Sunday, 18 October

Overcast. High 65°, low 46°.

Pressure30.30 inHg

Wind10.8 mph S

Humidity53%

Visibility—

Dew point43°

Mon, 1956° / 53°

0.6

56 °

Quincy, Monday, 19 October

Rain. High 56°, low 53°.

Pressure30.21 inHg

Wind8.1 mph S

Humidity96%

Visibility—

Dew point55°

Tue, 2066° / 55°

0.01

66 °

Quincy, Tuesday, 20 October

Light rain. High 66°, low 55°.

Pressure30.21 inHg

Wind8.4 mph SE

Humidity70%

Visibility—

Dew point51°

Wed, 2170° / 60°

0.28

70 °

Quincy, Wednesday, 21 October

Light rain. High 70°, low 60°.

Pressure30.15 inHg

Wind13.9 mph S

Humidity92%

Visibility—

Dew point63°

Thu, 2274° / 66°

0.4

74 °

Quincy, Thursday, 22 October

Light rain. High 74°, low 66°.

Pressure29.94 inHg

Wind15.8 mph S

Humidity84%

Visibility—

Dew point63°

Fri, 2372° / 57°

0.01

72 °

Quincy, Friday, 23 October

Light rain. High 72°, low 57°.

Pressure29.94 inHg

Wind22.5 mph S

Humidity64%

Visibility—

Dew point58°

Sat, 2458° / 48°

58 °

Quincy, Saturday, 24 October

Overcast. High 58°, low 48°.

Pressure30.39 inHg

Wind8.3 mph NW

Humidity49%

Visibility—

Dew point38°

Sun, 2562° / 49°

62 °

Quincy, Sunday, 25 October

Clear. High 62°, low 49°.

Pressure30.30 inHg

Wind8.2 mph SW

Humidity43%

Visibility—

Dew point37°

Mon, 2653° / 44°

53 °

Quincy, Monday, 26 October

Overcast. High 53°, low 44°.

Pressure30.30 inHg

Wind12.1 mph NW

Humidity51%

Visibility—

Dew point33°

Tue, 2756° / 40°

56 °

Quincy, Tuesday, 27 October

Overcast. High 56°, low 40°.

Pressure30.24 inHg

Wind7.8 mph SE

Humidity50%

Visibility—

Dew point34°

Wed, 2863° / 50°

0.05

63 °

Quincy, Wednesday, 28 October

Light rain. High 63°, low 50°.

Pressure30.00 inHg

Wind11.4 mph S

Humidity59%

Visibility—

Dew point42°

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

Thu, 2960° / 44°

0.07

60 °

Quincy, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.07 in

Chance of precipitation25%

Record high81° (2024)

Record low26° (1980)

Fri, 3060° / 45°

0.13

60 °

Quincy, Friday, 30 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.13 in

Chance of precipitation35%

Record high78° (1971)

Record low28° (1980)

Sat, 3159° / 45°

0.19

59 °

Quincy, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low45°

Average precipitation0.19 in

Chance of precipitation42%

Record high77° (1968)

Record low27° (1993)

Sun, 0159° / 44°

0.2

59 °

Quincy, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.2 in

Chance of precipitation30%

Record high78° (2000)

Record low25° (1993)

Mon, 0257° / 42°

0.1

57 °

Quincy, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.1 in

Chance of precipitation32%

Record high76° (1964)

Record low24° (1991)

Tue, 0356° / 42°

0.14

56 °

Quincy, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.14 in

Chance of precipitation30%

Record high75° (1987)

Record low17° (1991)

Wed, 0456° / 42°

0.1

56 °

Quincy, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.1 in

Chance of precipitation28%

Record high75° (1978)

Record low15° (1991)

Thu, 0555° / 41°

0.1

55 °

Quincy, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.1 in

Chance of precipitation28%

Record high73° (1978)

Record low23° (1991)

Fri, 0655° / 40°

0.09

55 °

Quincy, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.09 in

Chance of precipitation23%

Record high73° (2020)

Record low24° (1991)

Sat, 0755° / 40°

0.02

55 °

Quincy, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.02 in

Chance of precipitation13%

Record high73° (1966)

Record low10° (1991)

Sun, 0855° / 40°

0.06

55 °

Quincy, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.06 in

Chance of precipitation20%

Record high77° (1999)

Record low-4° (1991)

Mon, 0956° / 41°

0.12

56 °

Quincy, Monday, 9 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.12 in

Chance of precipitation30%

Record high76° (2022)

Record low5° (1991)

Tue, 1053° / 38°

0.13

53 °

Quincy, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.13 in

Chance of precipitation32%

Record high75° (2022)

Record low17° (1991)

Wed, 1151° / 36°

0.07

51 °

Quincy, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high51°

Average low36°

Average precipitation0.07 in

Chance of precipitation27%

Record high75° (1964)

Record low18° (2019)

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 Quincy, 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 Quincy, 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.