As of 04:51 CDT

Weather in Dewey, IL

61°

Dewey, Saturday, 10 October, 04:51

Clear. Feels like 60°. High 80°, low 57°.

Pressure30.09 inHg

Wind7.7 mph S

Humidity67%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Monthly outlook for Dewey, IL: average high 65.6°, average low 49.1°. That is 1.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 12 October (87.1°), the coolest 19 October (34.3°).

65.6°/49.1°

Average high / low

+1.4°

Above normal

3 / 5

Wet days / normal

0.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	68.1°	64.1°	+2.2°
20 October – 29 October	61.5°	60.2°	+0.7°
30 October – 8 November	at normal	56.3°	—

October records over 66 years

88.2°7 October 2007All-time high

21.7°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — Champaign (14 mi).

Sun, 1178° / 54°

78 °

Dewey, Sunday, 11 October

Clear. High 78°, low 54°.

Pressure29.97 inHg

Wind2.8 mph N

Humidity54%

Visibility6.2 mi

Dew point55°

Mon, 1287° / 62°

87 °

Dewey, Monday, 12 October

Mostly clear. High 87°, low 62°.

Pressure29.88 inHg

Wind11.4 mph SW

Humidity42%

Visibility6.2 mi

Dew point59°

Tue, 1386° / 71°

0.01

86 °

Dewey, Tuesday, 13 October

Light rain. High 86°, low 71°.

Pressure29.83 inHg

Wind12.1 mph W

Humidity49%

Visibility6.2 mi

Dew point63°

Wed, 1474° / 59°

0.12

74 °

Dewey, Wednesday, 14 October

Light rain. High 74°, low 59°.

Pressure30.06 inHg

Wind13.5 mph NE

Humidity68%

Visibility—

Dew point61°

Thu, 1567° / 53°

0.21

67 °

Dewey, Thursday, 15 October

Rain. High 67°, low 53°.

Pressure30.30 inHg

Wind13.2 mph W

Humidity53%

Visibility—

Dew point45°

Fri, 1666° / 52°

66 °

Dewey, Friday, 16 October

Overcast. High 66°, low 52°.

Pressure29.94 inHg

Wind14.5 mph W

Humidity38%

Visibility—

Dew point38°

Sat, 1748° / 40°

0.03

48 °

Dewey, Saturday, 17 October

Light rain. High 48°, low 40°.

Pressure30.15 inHg

Wind16.2 mph N

Humidity94%

Visibility—

Dew point39°

Sun, 1843° / 36°

43 °

Dewey, Sunday, 18 October

Overcast. High 43°, low 36°.

Pressure30.47 inHg

Wind17.7 mph NW

Humidity64%

Visibility—

Dew point31°

Mon, 1952° / 34°

52 °

Dewey, Monday, 19 October

Overcast. High 52°, low 34°.

Pressure30.42 inHg

Wind7 mph S

Humidity36%

Visibility—

Dew point21°

Tue, 2058° / 37°

58 °

Dewey, Tuesday, 20 October

Overcast. High 58°, low 37°.

Pressure30.33 inHg

Wind9.4 mph S

Humidity32%

Visibility—

Dew point24°

Wed, 2164° / 42°

64 °

Dewey, Wednesday, 21 October

Clear. High 64°, low 42°.

Pressure30.30 inHg

Wind9.9 mph S

Humidity33%

Visibility—

Dew point30°

Thu, 2268° / 46°

68 °

Dewey, Thursday, 22 October

Clear. High 68°, low 46°.

Pressure30.18 inHg

Wind14.3 mph S

Humidity37%

Visibility—

Dew point37°

Fri, 2357° / 52°

0.01

57 °

Dewey, Friday, 23 October

Light rain. High 57°, low 52°.

Pressure29.97 inHg

Wind12.7 mph S

Humidity70%

Visibility—

Dew point47°

Sat, 2464° / 47°

0.08

64 °

Dewey, Saturday, 24 October

Light rain. High 64°, low 47°.

Pressure29.83 inHg

Wind13.9 mph S

Humidity51%

Visibility—

Dew point44°

Sun, 2557° / 44°

0.02

57 °

Dewey, Sunday, 25 October

Light rain. High 57°, low 44°.

Pressure29.91 inHg

Wind16.8 mph W

Humidity44%

Visibility—

Dew point32°

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

Mon, 2659° / 44°

0.12

59 °

Dewey, Monday, 26 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.12 in

Chance of precipitation30%

Record high81° (1963)

Record low23° (1962)

Tue, 2759° / 44°

0.08

59 °

Dewey, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.08 in

Chance of precipitation33%

Record high75° (1984)

Record low31° (2001)

Wed, 2858° / 42°

0.07

58 °

Dewey, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.07 in

Chance of precipitation18%

Record high76° (1999)

Record low26° (1976)

Thu, 2958° / 42°

0.06

58 °

Dewey, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.06 in

Chance of precipitation22%

Record high78° (2024)

Record low25° (1980)

Fri, 3060° / 44°

0.09

60 °

Dewey, Friday, 30 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.09 in

Chance of precipitation30%

Record high79° (1971)

Record low24° (1980)

Sat, 3159° / 45°

0.17

59 °

Dewey, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low45°

Average precipitation0.17 in

Chance of precipitation37%

Record high75° (1974)

Record low26° (1988)

Sun, 0158° / 43°

0.18

58 °

Dewey, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.18 in

Chance of precipitation30%

Record high76° (2016)

Record low26° (1993)

Mon, 0257° / 42°

0.1

57 °

Dewey, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.1 in

Chance of precipitation28%

Record high76° (2016)

Record low25° (1996)

Tue, 0356° / 40°

0.08

56 °

Dewey, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low40°

Average precipitation0.08 in

Chance of precipitation25%

Record high76° (1987)

Record low19° (1991)

Wed, 0455° / 42°

0.09

55 °

Dewey, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.09 in

Chance of precipitation28%

Record high74° (1978)

Record low17° (1991)

Thu, 0555° / 40°

0.11

55 °

Dewey, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.11 in

Chance of precipitation28%

Record high76° (1978)

Record low19° (1991)

Fri, 0655° / 39°

0.07

55 °

Dewey, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°

Average low39°

Average precipitation0.07 in

Chance of precipitation25%

Record high70° (2020)

Record low25° (2010)

Sat, 0754° / 39°

0.09

54 °

Dewey, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.09 in

Chance of precipitation22%

Record high69° (1966)

Record low19° (1991)

Sun, 0854° / 39°

0.04

54 °

Dewey, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.04 in

Chance of precipitation17%

Record high76° (2023)

Record low10° (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 Dewey, 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 Dewey, 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.