As of 16:11 CDT

Weather in Dewey, IL

84°

Dewey, Friday, 9 October, 16:11

Clear. Feels like 82°. High 84°, low 52°.

Pressure30.03 inHg

Wind9.2 mph S

Humidity24%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Monthly outlook for Dewey, IL: average high 70.5°, average low 50.7°. That is 3.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 13 October (86.8°), the coolest 18 October (33.5°).

70.5°/50.7°

Average high / low

+3.9°

Above normal

1 / 5

Wet days / normal

0.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	72.4°	64.9°	+4.2°
19 October – 28 October	67.4°	60.4°	+3.9°
29 October – 7 November	at normal	56.7°	—

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).

Sat, 1078° / 56°

78 °

Dewey, Saturday, 10 October

Overcast. High 78°, low 56°.

Pressure30.09 inHg

Wind7.7 mph SE

Humidity45%

Visibility6.2 mi

Dew point52°

Sun, 1178° / 55°

0.02

78 °

Dewey, Sunday, 11 October

Light rain. High 78°, low 55°.

Pressure29.94 inHg

Wind5.9 mph N

Humidity58%

Visibility6.2 mi

Dew point57°

Mon, 1286° / 62°

86 °

Dewey, Monday, 12 October

Mostly clear. High 86°, low 62°.

Pressure29.88 inHg

Wind11.8 mph SW

Humidity43%

Visibility6.2 mi

Dew point58°

Tue, 1387° / 70°

87 °

Dewey, Tuesday, 13 October

Clear. High 87°, low 70°.

Pressure29.83 inHg

Wind11.5 mph W

Humidity57%

Visibility6.2 mi

Dew point67°

Wed, 1467° / 58°

0.01

67 °

Dewey, Wednesday, 14 October

Light rain. High 67°, low 58°.

Pressure30.06 inHg

Wind12.5 mph NE

Humidity73%

Visibility—

Dew point58°

Thu, 1576° / 56°

0.29

76 °

Dewey, Thursday, 15 October

Light rain. High 76°, low 56°.

Pressure29.94 inHg

Wind20.5 mph SW

Humidity81%

Visibility—

Dew point60°

Fri, 1670° / 47°

0.01

70 °

Dewey, Friday, 16 October

Light rain. High 70°, low 47°.

Pressure30.03 inHg

Wind22.2 mph W

Humidity41%

Visibility—

Dew point34°

Sat, 1746° / 39°

46 °

Dewey, Saturday, 17 October

Overcast. High 46°, low 39°.

Pressure30.33 inHg

Wind20 mph W

Humidity50%

Visibility—

Dew point27°

Sun, 1851° / 34°

51 °

Dewey, Sunday, 18 October

Clear. High 51°, low 34°.

Pressure30.50 inHg

Wind6.6 mph N

Humidity48%

Visibility—

Dew point29°

Mon, 1956° / 39°

56 °

Dewey, Monday, 19 October

Overcast. High 56°, low 39°.

Pressure30.42 inHg

Wind8.3 mph S

Humidity39%

Visibility—

Dew point27°

Tue, 2062° / 43°

62 °

Dewey, Tuesday, 20 October

Clear. High 62°, low 43°.

Pressure30.42 inHg

Wind6 mph SE

Humidity32%

Visibility—

Dew point28°

Wed, 2167° / 45°

67 °

Dewey, Wednesday, 21 October

Clear. High 67°, low 45°.

Pressure30.33 inHg

Wind9 mph S

Humidity32%

Visibility—

Dew point32°

Thu, 2271° / 49°

71 °

Dewey, Thursday, 22 October

Clear. High 71°, low 49°.

Pressure30.12 inHg

Wind11.2 mph W

Humidity37%

Visibility—

Dew point39°

Fri, 2373° / 52°

73 °

Dewey, Friday, 23 October

Clear. High 73°, low 52°.

Pressure30.06 inHg

Wind7 mph SW

Humidity40%

Visibility—

Dew point42°

Sat, 2475° / 54°

75 °

Dewey, Saturday, 24 October

Clear. High 75°, low 54°.

Pressure30.03 inHg

Wind13.5 mph SW

Humidity29%

Visibility—

Dew point37°

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

Sun, 2560° / 44°

0.15

60 °

Dewey, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.15 in

Chance of precipitation27%

Record high79° (1963)

Record low29° (2013)

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)

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.